feat(manager-core): admin auth gate (Phase 3a)

Closes the regression risk of the admin API and dashboard being open
to anyone reaching the bound port. Required foundation before v1.1
data-plane services land.

Per-user accounts (admin_users), Argon2id passwords, env-var bootstrap
of the first admin that becomes inert once any admin exists, opaque
32-byte session token doubling as bearer credential, 24h sliding TTL
configurable via PICLOUD_SESSION_TTL_HOURS. is_active column lets
admins be deactivated without losing audit history; last-active-admin
guard on DELETE and on PATCH that flips is_active to false (sessions
also wiped on deactivation).

require_admin middleware fronts every /api/v1/admin/* route. The data
plane (/api/v1/execute/{id}), /healthz, /version, and user routes
stay open. picloud admin reset-password <username> subcommand handles
recovery without going through HTTP.

Dashboard gains /admin/login and /admin/admins surfaces, a top-bar
user menu, and a token store with a localStorage echo so refreshes
don't sign you out. Cookie-based auth works in parallel for non-SPA
clients.

Forward compatibility: future RBAC tables (admin_roles,
admin_user_roles) join on admin_users.id; the auth middleware is the
seam where role checks slot in. Email, 2FA, passkeys, and personal
API tokens are all additive without touching admin_users.

Blueprint §11.4 updated to reflect what actually shipped.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

CLAUDE.md

@@ -8,6 +8,8 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 Authoritative design: [serverless_cloud_blueprint.md](serverless_cloud_blueprint.md). The blueprint is a living document — when architecture decisions are made in conversation that contradict it, treat the latest decision as truth and update the blueprint.
 
+**Current focus (Phase 3, pre-v1.1):** admin auth gate, then multi-app scoping. The latter introduces `apps` as the top-level isolation boundary for scripts, routes, domains, and (later) data. See blueprint §11.5 for the design. Every v1.1+ feature must assume `app_id` exists as a scoping dimension.
+
 ## Three-Service Architecture
 
 The platform splits into three logical services, each backed by a `*-core` library crate so the same logic runs in single-process MVP mode and split-process cluster mode:
@@ -26,7 +28,7 @@ In MVP, all three run in one process (`picloud` binary). In cluster mode, each r
 
 Versioned API surfaces live under `/api/v{N}/...`. See [docs/versioning.md](docs/versioning.md) for the full scheme.
 
-- `/api/v1/admin/*` — manager (control plane: script CRUD, routes CRUD + check + match, logs, config)
+- `/api/v1/admin/*` — manager (control plane: script CRUD, routes CRUD + check + match, logs, config; apps CRUD once Phase 3b lands)
 - `/api/v1/execute/{id}` — orchestrator (data plane: invoke a script by ID, always-available bypass)
 - `/admin/*` — dashboard SPA (SvelteKit, `paths.base = '/admin'`)
 - `/healthz` — liveness (string `"ok"`)
@@ -37,6 +39,10 @@ Reserved path prefixes (rejected at route creation): `/api/`, `/admin/`, `/healt
 
 Caddy fronts everything. Same Caddyfile shape works for single-node and cluster — only upstream targets change.
 
+**Param syntax convention:** route paths use `:name` (e.g., `/users/:id`); domains (once apps land) use `{name}` (e.g., `{tenant}.example.com`). These are deliberately distinct — never use `:` in a domain context or `{}` in a route-path context.
+
+**Two-phase dispatch (Phase 3b onward):** the orchestrator first resolves `Host` → app (most-specific domain claim wins), then runs that app's route trie. The route matcher itself is unchanged and never sees other apps' routes.
+
 ## Tech Stack
 
 - **Rust 1.92+** workspace, pinned via `rust-toolchain.toml`
@@ -102,4 +108,6 @@ docs/
 
 ## Out of MVP
 
-Queue triggers, cron triggers, SMTP ingress, KV / docs / email / users / HTTP SDKs in scripts, interceptors, workflows, function-to-function `invoke()`, auth, multi-tenancy, secrets, metrics dashboard. All deferred to v1.1+ per the blueprint. Don't pre-build for them — but don't make decisions that close the door on them either.
+Queue triggers, cron triggers, SMTP ingress, KV / docs / email / users / HTTP SDKs in scripts, interceptors, workflows, function-to-function `invoke()`, secrets, metrics dashboard. All deferred to v1.1+ per the blueprint. Don't pre-build for them — but don't make decisions that close the door on them either.
+
+**Pulled forward to Phase 3 (pre-v1.1):** admin auth, multi-app scoping. Cross-app data sharing (export/import) stays at v1.3+; the initial cut enforces strict isolation. See blueprint §11.5.

Cargo.lock

@@ -46,6 +46,18 @@ version = "1.0.102"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"
 
+[[package]]
+name = "argon2"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c3610892ee6e0cbce8ae2700349fcf8f98adb0dbfbee85aec3c9179d29cc072"
+dependencies = [
+ "base64ct",
+ "blake2",
+ "cpufeatures",
+ "password-hash",
+]
+
 [[package]]
 name = "assert-json-diff"
 version = "2.0.2"
@@ -206,6 +218,15 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "blake2"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46502ad458c9a52b69d4d4d32775c788b7a1b85e8bc9d482d92250fc0e3f8efe"
+dependencies = [
+ "digest",
+]
+
 [[package]]
 name = "block-buffer"
 version = "0.10.4"
@@ -1233,6 +1254,17 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "password-hash"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "346f04948ba92c43e8469c1ee6736c7563d71012b17d40745260fe106aac2166"
+dependencies = [
+ "base64ct",
+ "rand_core 0.6.4",
+ "subtle",
+]
+
 [[package]]
 name = "pear"
 version = "0.2.9"
@@ -1273,7 +1305,7 @@ checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
 
 [[package]]
 name = "picloud"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1297,7 +1329,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-executor"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "anyhow",
  "picloud-executor-core",
@@ -1309,7 +1341,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-executor-core"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "chrono",
  "picloud-shared",
@@ -1323,7 +1355,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-manager"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "anyhow",
  "picloud-manager-core",
@@ -1335,17 +1367,22 @@ dependencies = [
 
 [[package]]
 name = "picloud-manager-core"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
+ "argon2",
  "async-trait",
  "axum",
+ "base64",
  "chrono",
  "picloud-orchestrator-core",
  "picloud-shared",
+ "rand 0.8.6",
  "serde",
  "serde_json",
+ "sha2",
  "sqlx",
  "thiserror 1.0.69",
+ "tokio",
  "tracing",
  "url",
  "uuid",
@@ -1353,7 +1390,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-orchestrator"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "anyhow",
  "picloud-orchestrator-core",
@@ -1365,7 +1402,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-orchestrator-core"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "async-trait",
  "axum",
@@ -1384,7 +1421,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-shared"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "async-trait",
  "chrono",

Cargo.toml

@@ -12,7 +12,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.5.0"
+version = "0.5.1"
 edition = "2021"
 rust-version = "1.92"
 license = "MIT OR Apache-2.0"
@@ -66,6 +66,12 @@ reqwest = { version = "0.12", default-features = false, features = ["json", "rus
 url = "2"
 urlencoding = "2"
 
+# Auth (admin users + sessions)
+argon2 = "0.5"
+rand = { version = "0.8", features = ["getrandom"] }
+sha2 = "0.10"
+base64 = "0.22"
+
 [workspace.lints.rust]
 unsafe_code = "forbid"
 

crates/manager-core/Cargo.toml

@@ -22,3 +22,11 @@ uuid.workspace = true
 chrono.workspace = true
 sqlx.workspace = true
 url.workspace = true
+
+argon2.workspace = true
+rand.workspace = true
+sha2.workspace = true
+base64.workspace = true
+
+[dev-dependencies]
+tokio.workspace = true

crates/manager-core/migrations/0004_admin_auth.sql

@@ -0,0 +1,33 @@
+-- Phase 3a admin auth — see blueprint §11.4.
+--
+-- Per-user platform-operator accounts (distinct from the v1.1+ `users`
+-- table, which is for script-end users). Every authenticated admin is a
+-- full admin in this cut; role/permission tables will be added later
+-- without touching this schema.
+--
+-- `admin_sessions.token_hash` stores SHA-256 of the raw token; the raw
+-- value only ever exists in the login response, the HttpOnly cookie, and
+-- bearer-token requests. Cascade on user delete kills the user's sessions
+-- automatically — which is also why deactivating a user can simply wipe
+-- their rows instead of marking each session expired.
+
+CREATE TABLE admin_users (
+    id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    username        TEXT NOT NULL UNIQUE,
+    password_hash   TEXT NOT NULL,
+    is_active       BOOLEAN NOT NULL DEFAULT TRUE,
+    created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    last_login_at   TIMESTAMPTZ
+);
+
+CREATE TABLE admin_sessions (
+    token_hash      TEXT PRIMARY KEY,
+    user_id         UUID NOT NULL REFERENCES admin_users(id) ON DELETE CASCADE,
+    created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    expires_at      TIMESTAMPTZ NOT NULL,
+    last_used_at    TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX admin_sessions_user_idx   ON admin_sessions (user_id);
+CREATE INDEX admin_sessions_expiry_idx ON admin_sessions (expires_at);

crates/manager-core/src/admin_session_repo.rs

@@ -0,0 +1,152 @@
+//! CRUD over the `admin_sessions` table.
+//!
+//! The token never appears in this module — only its SHA-256 hash. The
+//! raw value lives in `auth::GeneratedToken` long enough to hit the
+//! cookie and the JSON response, then is forgotten. Lookups also filter
+//! expired rows at query time so a delayed prune sweep can never extend
+//! a session's life.
+
+use async_trait::async_trait;
+use chrono::{DateTime, Utc};
+use picloud_shared::AdminUserId;
+use sqlx::PgPool;
+
+#[derive(Debug, thiserror::Error)]
+pub enum AdminSessionRepositoryError {
+    #[error("database error: {0}")]
+    Db(#[from] sqlx::Error),
+}
+
+/// Result of a session lookup. Includes the user id (for auth context)
+/// and the existing `expires_at` so the middleware can decide whether
+/// the sliding window bump is worth a write.
+#[derive(Debug, Clone)]
+pub struct AdminSessionLookup {
+    pub user_id: AdminUserId,
+    pub expires_at: DateTime<Utc>,
+}
+
+#[async_trait]
+pub trait AdminSessionRepository: Send + Sync {
+    async fn create(
+        &self,
+        user_id: AdminUserId,
+        token_hash: &str,
+        expires_at: DateTime<Utc>,
+    ) -> Result<(), AdminSessionRepositoryError>;
+    /// Look up a session by token hash. Returns `None` for missing or
+    /// already-expired rows (the query filters them).
+    async fn lookup(
+        &self,
+        token_hash: &str,
+    ) -> Result<Option<AdminSessionLookup>, AdminSessionRepositoryError>;
+    /// Sliding-window bump. Sets `last_used_at = NOW()` and `expires_at`
+    /// to the supplied value.
+    async fn touch(
+        &self,
+        token_hash: &str,
+        new_expires_at: DateTime<Utc>,
+    ) -> Result<(), AdminSessionRepositoryError>;
+    async fn delete(&self, token_hash: &str) -> Result<(), AdminSessionRepositoryError>;
+    /// Delete every session belonging to a user. Used when the user is
+    /// deactivated or has their password reset out-of-band — both
+    /// invalidate all current logins for that account.
+    async fn delete_for_user(
+        &self,
+        user_id: AdminUserId,
+    ) -> Result<u64, AdminSessionRepositoryError>;
+    /// Sweep expired rows. The auth middleware filters expired rows on
+    /// lookup, so this is just bounded-growth hygiene, not correctness.
+    async fn prune_expired(&self) -> Result<u64, AdminSessionRepositoryError>;
+}
+
+pub struct PostgresAdminSessionRepository {
+    pool: PgPool,
+}
+
+impl PostgresAdminSessionRepository {
+    #[must_use]
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+}
+
+#[async_trait]
+impl AdminSessionRepository for PostgresAdminSessionRepository {
+    async fn create(
+        &self,
+        user_id: AdminUserId,
+        token_hash: &str,
+        expires_at: DateTime<Utc>,
+    ) -> Result<(), AdminSessionRepositoryError> {
+        sqlx::query(
+            "INSERT INTO admin_sessions (token_hash, user_id, expires_at) \
+             VALUES ($1, $2, $3)",
+        )
+        .bind(token_hash)
+        .bind(user_id.into_inner())
+        .bind(expires_at)
+        .execute(&self.pool)
+        .await?;
+        Ok(())
+    }
+
+    async fn lookup(
+        &self,
+        token_hash: &str,
+    ) -> Result<Option<AdminSessionLookup>, AdminSessionRepositoryError> {
+        let row: Option<(uuid::Uuid, DateTime<Utc>)> = sqlx::query_as(
+            "SELECT user_id, expires_at FROM admin_sessions \
+             WHERE token_hash = $1 AND expires_at > NOW()",
+        )
+        .bind(token_hash)
+        .fetch_optional(&self.pool)
+        .await?;
+        Ok(row.map(|(uid, exp)| AdminSessionLookup {
+            user_id: uid.into(),
+            expires_at: exp,
+        }))
+    }
+
+    async fn touch(
+        &self,
+        token_hash: &str,
+        new_expires_at: DateTime<Utc>,
+    ) -> Result<(), AdminSessionRepositoryError> {
+        sqlx::query(
+            "UPDATE admin_sessions SET last_used_at = NOW(), expires_at = $2 \
+             WHERE token_hash = $1",
+        )
+        .bind(token_hash)
+        .bind(new_expires_at)
+        .execute(&self.pool)
+        .await?;
+        Ok(())
+    }
+
+    async fn delete(&self, token_hash: &str) -> Result<(), AdminSessionRepositoryError> {
+        sqlx::query("DELETE FROM admin_sessions WHERE token_hash = $1")
+            .bind(token_hash)
+            .execute(&self.pool)
+            .await?;
+        Ok(())
+    }
+
+    async fn delete_for_user(
+        &self,
+        user_id: AdminUserId,
+    ) -> Result<u64, AdminSessionRepositoryError> {
+        let res = sqlx::query("DELETE FROM admin_sessions WHERE user_id = $1")
+            .bind(user_id.into_inner())
+            .execute(&self.pool)
+            .await?;
+        Ok(res.rows_affected())
+    }
+
+    async fn prune_expired(&self) -> Result<u64, AdminSessionRepositoryError> {
+        let res = sqlx::query("DELETE FROM admin_sessions WHERE expires_at <= NOW()")
+            .execute(&self.pool)
+            .await?;
+        Ok(res.rows_affected())
+    }
+}

crates/manager-core/src/admin_user_repo.rs

@@ -0,0 +1,322 @@
+//! CRUD over the `admin_users` table.
+//!
+//! Password hashes go in and come out as opaque strings — this module
+//! never inspects or computes them; that's `auth.rs`'s job. The "must
+//! keep at least one active admin" guard is implemented as a separate
+//! count query the API layer composes around `set_active` / `delete`.
+
+use async_trait::async_trait;
+use chrono::{DateTime, Utc};
+use picloud_shared::AdminUserId;
+use sqlx::PgPool;
+
+#[derive(Debug, thiserror::Error)]
+pub enum AdminUserRepositoryError {
+    #[error("database error: {0}")]
+    Db(#[from] sqlx::Error),
+
+    #[error("not found: {0}")]
+    NotFound(AdminUserId),
+
+    #[error("username already taken: {0}")]
+    DuplicateUsername(String),
+}
+
+/// Row returned to handlers and bootstrap. Never includes the password
+/// hash by accident — that lives in `AdminUserCredentials` (separate
+/// fetch from `get_credentials_by_username`).
+#[derive(Debug, Clone)]
+pub struct AdminUserRow {
+    pub id: AdminUserId,
+    pub username: String,
+    pub is_active: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+    pub last_login_at: Option<DateTime<Utc>>,
+}
+
+/// Credentials fetched for the login path only. Splitting the hash off
+/// from the public row makes it obvious in handler code which calls
+/// touch a secret.
+#[derive(Debug, Clone)]
+pub struct AdminUserCredentials {
+    pub id: AdminUserId,
+    pub username: String,
+    pub password_hash: String,
+    pub is_active: bool,
+}
+
+#[async_trait]
+pub trait AdminUserRepository: Send + Sync {
+    async fn get(&self, id: AdminUserId) -> Result<Option<AdminUserRow>, AdminUserRepositoryError>;
+    async fn get_by_username(
+        &self,
+        username: &str,
+    ) -> Result<Option<AdminUserRow>, AdminUserRepositoryError>;
+    async fn get_credentials_by_username(
+        &self,
+        username: &str,
+    ) -> Result<Option<AdminUserCredentials>, AdminUserRepositoryError>;
+    async fn list(&self) -> Result<Vec<AdminUserRow>, AdminUserRepositoryError>;
+    async fn create(
+        &self,
+        username: &str,
+        password_hash: &str,
+    ) -> Result<AdminUserRow, AdminUserRepositoryError>;
+    async fn update_username(
+        &self,
+        id: AdminUserId,
+        username: &str,
+    ) -> Result<AdminUserRow, AdminUserRepositoryError>;
+    async fn update_password_hash(
+        &self,
+        id: AdminUserId,
+        password_hash: &str,
+    ) -> Result<AdminUserRow, AdminUserRepositoryError>;
+    async fn set_active(
+        &self,
+        id: AdminUserId,
+        is_active: bool,
+    ) -> Result<AdminUserRow, AdminUserRepositoryError>;
+    async fn delete(&self, id: AdminUserId) -> Result<(), AdminUserRepositoryError>;
+    async fn touch_last_login(&self, id: AdminUserId) -> Result<(), AdminUserRepositoryError>;
+    /// Count of `is_active = true` rows. Used at bootstrap to decide
+    /// whether to seed the first admin.
+    async fn count_active(&self) -> Result<i64, AdminUserRepositoryError>;
+    /// Count of `is_active = true` rows excluding the given id. Used by
+    /// last-admin protection: "would deactivating / deleting this user
+    /// leave zero active admins?"
+    async fn count_active_excluding(
+        &self,
+        id: AdminUserId,
+    ) -> Result<i64, AdminUserRepositoryError>;
+}
+
+pub struct PostgresAdminUserRepository {
+    pool: PgPool,
+}
+
+impl PostgresAdminUserRepository {
+    #[must_use]
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+}
+
+#[async_trait]
+impl AdminUserRepository for PostgresAdminUserRepository {
+    async fn get(&self, id: AdminUserId) -> Result<Option<AdminUserRow>, AdminUserRepositoryError> {
+        let row = sqlx::query_as::<_, AdminUserRecord>(
+            "SELECT id, username, is_active, created_at, updated_at, last_login_at \
+             FROM admin_users WHERE id = $1",
+        )
+        .bind(id.into_inner())
+        .fetch_optional(&self.pool)
+        .await?;
+        Ok(row.map(Into::into))
+    }
+
+    async fn get_by_username(
+        &self,
+        username: &str,
+    ) -> Result<Option<AdminUserRow>, AdminUserRepositoryError> {
+        let row = sqlx::query_as::<_, AdminUserRecord>(
+            "SELECT id, username, is_active, created_at, updated_at, last_login_at \
+             FROM admin_users WHERE username = $1",
+        )
+        .bind(username)
+        .fetch_optional(&self.pool)
+        .await?;
+        Ok(row.map(Into::into))
+    }
+
+    async fn get_credentials_by_username(
+        &self,
+        username: &str,
+    ) -> Result<Option<AdminUserCredentials>, AdminUserRepositoryError> {
+        let row = sqlx::query_as::<_, AdminCredsRecord>(
+            "SELECT id, username, password_hash, is_active \
+             FROM admin_users WHERE username = $1",
+        )
+        .bind(username)
+        .fetch_optional(&self.pool)
+        .await?;
+        Ok(row.map(Into::into))
+    }
+
+    async fn list(&self) -> Result<Vec<AdminUserRow>, AdminUserRepositoryError> {
+        let rows = sqlx::query_as::<_, AdminUserRecord>(
+            "SELECT id, username, is_active, created_at, updated_at, last_login_at \
+             FROM admin_users ORDER BY username",
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        Ok(rows.into_iter().map(Into::into).collect())
+    }
+
+    async fn create(
+        &self,
+        username: &str,
+        password_hash: &str,
+    ) -> Result<AdminUserRow, AdminUserRepositoryError> {
+        let res = sqlx::query_as::<_, AdminUserRecord>(
+            "INSERT INTO admin_users (username, password_hash) \
+             VALUES ($1, $2) \
+             RETURNING id, username, is_active, created_at, updated_at, last_login_at",
+        )
+        .bind(username)
+        .bind(password_hash)
+        .fetch_one(&self.pool)
+        .await;
+
+        match res {
+            Ok(row) => Ok(row.into()),
+            Err(sqlx::Error::Database(e)) if e.is_unique_violation() => Err(
+                AdminUserRepositoryError::DuplicateUsername(username.to_string()),
+            ),
+            Err(e) => Err(e.into()),
+        }
+    }
+
+    async fn update_username(
+        &self,
+        id: AdminUserId,
+        username: &str,
+    ) -> Result<AdminUserRow, AdminUserRepositoryError> {
+        let res = sqlx::query_as::<_, AdminUserRecord>(
+            "UPDATE admin_users SET username = $2, updated_at = NOW() \
+             WHERE id = $1 \
+             RETURNING id, username, is_active, created_at, updated_at, last_login_at",
+        )
+        .bind(id.into_inner())
+        .bind(username)
+        .fetch_optional(&self.pool)
+        .await;
+
+        match res {
+            Ok(Some(row)) => Ok(row.into()),
+            Ok(None) => Err(AdminUserRepositoryError::NotFound(id)),
+            Err(sqlx::Error::Database(e)) if e.is_unique_violation() => Err(
+                AdminUserRepositoryError::DuplicateUsername(username.to_string()),
+            ),
+            Err(e) => Err(e.into()),
+        }
+    }
+
+    async fn update_password_hash(
+        &self,
+        id: AdminUserId,
+        password_hash: &str,
+    ) -> Result<AdminUserRow, AdminUserRepositoryError> {
+        let row = sqlx::query_as::<_, AdminUserRecord>(
+            "UPDATE admin_users SET password_hash = $2, updated_at = NOW() \
+             WHERE id = $1 \
+             RETURNING id, username, is_active, created_at, updated_at, last_login_at",
+        )
+        .bind(id.into_inner())
+        .bind(password_hash)
+        .fetch_optional(&self.pool)
+        .await?;
+        row.map(Into::into)
+            .ok_or(AdminUserRepositoryError::NotFound(id))
+    }
+
+    async fn set_active(
+        &self,
+        id: AdminUserId,
+        is_active: bool,
+    ) -> Result<AdminUserRow, AdminUserRepositoryError> {
+        let row = sqlx::query_as::<_, AdminUserRecord>(
+            "UPDATE admin_users SET is_active = $2, updated_at = NOW() \
+             WHERE id = $1 \
+             RETURNING id, username, is_active, created_at, updated_at, last_login_at",
+        )
+        .bind(id.into_inner())
+        .bind(is_active)
+        .fetch_optional(&self.pool)
+        .await?;
+        row.map(Into::into)
+            .ok_or(AdminUserRepositoryError::NotFound(id))
+    }
+
+    async fn delete(&self, id: AdminUserId) -> Result<(), AdminUserRepositoryError> {
+        let res = sqlx::query("DELETE FROM admin_users WHERE id = $1")
+            .bind(id.into_inner())
+            .execute(&self.pool)
+            .await?;
+        if res.rows_affected() == 0 {
+            return Err(AdminUserRepositoryError::NotFound(id));
+        }
+        Ok(())
+    }
+
+    async fn touch_last_login(&self, id: AdminUserId) -> Result<(), AdminUserRepositoryError> {
+        sqlx::query("UPDATE admin_users SET last_login_at = NOW() WHERE id = $1")
+            .bind(id.into_inner())
+            .execute(&self.pool)
+            .await?;
+        Ok(())
+    }
+
+    async fn count_active(&self) -> Result<i64, AdminUserRepositoryError> {
+        let (count,): (i64,) =
+            sqlx::query_as("SELECT COUNT(*)::BIGINT FROM admin_users WHERE is_active")
+                .fetch_one(&self.pool)
+                .await?;
+        Ok(count)
+    }
+
+    async fn count_active_excluding(
+        &self,
+        id: AdminUserId,
+    ) -> Result<i64, AdminUserRepositoryError> {
+        let (count,): (i64,) =
+            sqlx::query_as("SELECT COUNT(*)::BIGINT FROM admin_users WHERE is_active AND id <> $1")
+                .bind(id.into_inner())
+                .fetch_one(&self.pool)
+                .await?;
+        Ok(count)
+    }
+}
+
+#[derive(sqlx::FromRow)]
+struct AdminUserRecord {
+    id: uuid::Uuid,
+    username: String,
+    is_active: bool,
+    created_at: DateTime<Utc>,
+    updated_at: DateTime<Utc>,
+    last_login_at: Option<DateTime<Utc>>,
+}
+
+impl From<AdminUserRecord> for AdminUserRow {
+    fn from(r: AdminUserRecord) -> Self {
+        Self {
+            id: r.id.into(),
+            username: r.username,
+            is_active: r.is_active,
+            created_at: r.created_at,
+            updated_at: r.updated_at,
+            last_login_at: r.last_login_at,
+        }
+    }
+}
+
+#[derive(sqlx::FromRow)]
+struct AdminCredsRecord {
+    id: uuid::Uuid,
+    username: String,
+    password_hash: String,
+    is_active: bool,
+}
+
+impl From<AdminCredsRecord> for AdminUserCredentials {
+    fn from(r: AdminCredsRecord) -> Self {
+        Self {
+            id: r.id.into(),
+            username: r.username,
+            password_hash: r.password_hash,
+            is_active: r.is_active,
+        }
+    }
+}

crates/manager-core/src/admin_users_api.rs

@@ -0,0 +1,320 @@
+//! `/api/v1/admin/admins/*` — admin user CRUD. Guarded by
+//! `require_admin`; every authenticated admin can call all of these.
+//! Role/permission walls land later (see blueprint §11.4 — no
+//! privilege levels in this cut).
+//!
+//! "Last active admin" protection lives at the service layer (not just
+//! the DB) so it can produce a clean 422 with a human-readable message
+//! rather than a SQL constraint violation. Deactivating a user also
+//! wipes their sessions; deleting cascades through the FK.
+
+use std::sync::Arc;
+
+use axum::extract::{Path, State};
+use axum::http::StatusCode;
+use axum::response::{IntoResponse, Json, Response};
+use axum::routing::get;
+use axum::Router;
+use chrono::{DateTime, Utc};
+use picloud_shared::AdminUserId;
+use serde::{Deserialize, Serialize};
+use serde_json::json;
+
+use crate::admin_session_repo::AdminSessionRepository;
+use crate::admin_user_repo::{AdminUserRepository, AdminUserRepositoryError, AdminUserRow};
+use crate::auth::hash_password;
+
+/// Validation knobs are tuned by NIST 800-63B-ish guidance: username is
+/// a strict ASCII subset so the lookup column stays predictable, and
+/// password has a minimum length but no complexity rules (complexity
+/// rules push users to predictable patterns).
+const USERNAME_MIN: usize = 2;
+const USERNAME_MAX: usize = 32;
+const PASSWORD_MIN: usize = 8;
+
+#[derive(Clone)]
+pub struct AdminsState {
+    pub users: Arc<dyn AdminUserRepository>,
+    pub sessions: Arc<dyn AdminSessionRepository>,
+}
+
+pub fn admins_router(state: AdminsState) -> Router {
+    Router::new()
+        .route("/admins", get(list_admins).post(create_admin))
+        .route(
+            "/admins/{id}",
+            get(get_admin).patch(patch_admin).delete(delete_admin),
+        )
+        .with_state(state)
+}
+
+// ----------------------------------------------------------------------------
+// DTOs
+// ----------------------------------------------------------------------------
+
+#[derive(Debug, Serialize)]
+pub struct AdminDto {
+    pub id: AdminUserId,
+    pub username: String,
+    pub is_active: bool,
+    pub created_at: DateTime<Utc>,
+    pub last_login_at: Option<DateTime<Utc>>,
+}
+
+impl From<AdminUserRow> for AdminDto {
+    fn from(r: AdminUserRow) -> Self {
+        Self {
+            id: r.id,
+            username: r.username,
+            is_active: r.is_active,
+            created_at: r.created_at,
+            last_login_at: r.last_login_at,
+        }
+    }
+}
+
+#[derive(Debug, Deserialize)]
+pub struct CreateAdminRequest {
+    pub username: String,
+    pub password: String,
+}
+
+#[derive(Debug, Deserialize, Default)]
+pub struct PatchAdminRequest {
+    pub username: Option<String>,
+    pub password: Option<String>,
+    pub is_active: Option<bool>,
+}
+
+// ----------------------------------------------------------------------------
+// Handlers
+// ----------------------------------------------------------------------------
+
+async fn list_admins(
+    State(state): State<AdminsState>,
+) -> Result<Json<Vec<AdminDto>>, AdminApiError> {
+    let rows = state.users.list().await?;
+    Ok(Json(rows.into_iter().map(Into::into).collect()))
+}
+
+async fn get_admin(
+    State(state): State<AdminsState>,
+    Path(id): Path<AdminUserId>,
+) -> Result<Json<AdminDto>, AdminApiError> {
+    state
+        .users
+        .get(id)
+        .await?
+        .map(AdminDto::from)
+        .map(Json)
+        .ok_or(AdminApiError::NotFound(id))
+}
+
+async fn create_admin(
+    State(state): State<AdminsState>,
+    Json(input): Json<CreateAdminRequest>,
+) -> Result<(StatusCode, Json<AdminDto>), AdminApiError> {
+    let username = input.username.trim();
+    validate_username(username)?;
+    validate_password(&input.password)?;
+    let hash = hash_password(&input.password).map_err(|e| AdminApiError::Hash(e.to_string()))?;
+    let row = state.users.create(username, &hash).await?;
+    Ok((StatusCode::CREATED, Json(row.into())))
+}
+
+async fn patch_admin(
+    State(state): State<AdminsState>,
+    Path(id): Path<AdminUserId>,
+    Json(input): Json<PatchAdminRequest>,
+) -> Result<Json<AdminDto>, AdminApiError> {
+    // Verify the target exists upfront — keeps the error path uniform
+    // for "rename a missing user" etc.
+    let _ = state
+        .users
+        .get(id)
+        .await?
+        .ok_or(AdminApiError::NotFound(id))?;
+
+    let mut latest: Option<AdminUserRow> = None;
+
+    if let Some(raw_username) = input.username.as_deref() {
+        let new_username = raw_username.trim();
+        validate_username(new_username)?;
+        latest = Some(state.users.update_username(id, new_username).await?);
+    }
+
+    if let Some(new_password) = input.password.as_deref() {
+        validate_password(new_password)?;
+        let hash = hash_password(new_password).map_err(|e| AdminApiError::Hash(e.to_string()))?;
+        latest = Some(state.users.update_password_hash(id, &hash).await?);
+        // Best practice: rotating your own password should still keep
+        // your session alive, so we don't wipe sessions here. (If we
+        // wanted "log everyone else out on password change", that'd be
+        // a `delete_for_user` + re-issue current session. Out of scope
+        // for the initial cut.)
+    }
+
+    if let Some(new_active) = input.is_active {
+        // Last-active-admin guard: only when transitioning to inactive.
+        if !new_active {
+            let remaining = state.users.count_active_excluding(id).await?;
+            if remaining == 0 {
+                return Err(AdminApiError::LastActiveAdmin);
+            }
+        }
+        latest = Some(state.users.set_active(id, new_active).await?);
+        // Deactivation invalidates all of the user's sessions. Cheap
+        // and safer than waiting for sliding-window expiry.
+        if !new_active {
+            if let Err(err) = state.sessions.delete_for_user(id).await {
+                tracing::error!(?err, "failed to delete sessions for deactivated admin");
+            }
+        }
+    }
+
+    let row = match latest {
+        Some(r) => r,
+        None => state
+            .users
+            .get(id)
+            .await?
+            .ok_or(AdminApiError::NotFound(id))?,
+    };
+    Ok(Json(row.into()))
+}
+
+async fn delete_admin(
+    State(state): State<AdminsState>,
+    Path(id): Path<AdminUserId>,
+) -> Result<StatusCode, AdminApiError> {
+    let target = state
+        .users
+        .get(id)
+        .await?
+        .ok_or(AdminApiError::NotFound(id))?;
+    if target.is_active {
+        let remaining = state.users.count_active_excluding(id).await?;
+        if remaining == 0 {
+            return Err(AdminApiError::LastActiveAdmin);
+        }
+    }
+    state.users.delete(id).await?;
+    // Sessions cascade via FK; no explicit delete needed.
+    Ok(StatusCode::NO_CONTENT)
+}
+
+// ----------------------------------------------------------------------------
+// Validation
+// ----------------------------------------------------------------------------
+
+fn validate_username(s: &str) -> Result<(), AdminApiError> {
+    if s.len() < USERNAME_MIN || s.len() > USERNAME_MAX {
+        return Err(AdminApiError::InvalidUsername(format!(
+            "username must be {USERNAME_MIN}-{USERNAME_MAX} characters"
+        )));
+    }
+    if !s
+        .bytes()
+        .all(|b| b.is_ascii_lowercase() || b.is_ascii_digit() || matches!(b, b'.' | b'_' | b'-'))
+    {
+        return Err(AdminApiError::InvalidUsername(
+            "username may contain only lowercase letters, digits, dot, underscore, and hyphen"
+                .to_string(),
+        ));
+    }
+    Ok(())
+}
+
+fn validate_password(s: &str) -> Result<(), AdminApiError> {
+    if s.chars().count() < PASSWORD_MIN {
+        return Err(AdminApiError::InvalidPassword(format!(
+            "password must be at least {PASSWORD_MIN} characters"
+        )));
+    }
+    Ok(())
+}
+
+// ----------------------------------------------------------------------------
+// Errors
+// ----------------------------------------------------------------------------
+
+#[derive(Debug, thiserror::Error)]
+pub enum AdminApiError {
+    #[error("admin user not found: {0}")]
+    NotFound(AdminUserId),
+
+    #[error("{0}")]
+    InvalidUsername(String),
+
+    #[error("{0}")]
+    InvalidPassword(String),
+
+    #[error("cannot leave the system with zero active admins")]
+    LastActiveAdmin,
+
+    #[error("failed to hash password: {0}")]
+    Hash(String),
+
+    #[error("repository error: {0}")]
+    Repo(#[from] AdminUserRepositoryError),
+}
+
+impl IntoResponse for AdminApiError {
+    fn into_response(self) -> Response {
+        let (status, message) = match &self {
+            Self::NotFound(_) => (StatusCode::NOT_FOUND, self.to_string()),
+            Self::Repo(AdminUserRepositoryError::DuplicateUsername(_)) => {
+                (StatusCode::CONFLICT, self.to_string())
+            }
+            Self::InvalidUsername(_) | Self::InvalidPassword(_) | Self::LastActiveAdmin => {
+                (StatusCode::UNPROCESSABLE_ENTITY, self.to_string())
+            }
+            Self::Repo(AdminUserRepositoryError::NotFound(_)) => {
+                (StatusCode::NOT_FOUND, self.to_string())
+            }
+            Self::Repo(AdminUserRepositoryError::Db(e)) => {
+                tracing::error!(error = %e, "admin_users db error");
+                (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    "internal error".to_string(),
+                )
+            }
+            Self::Hash(_) => {
+                tracing::error!(error = %self, "password hashing failed");
+                (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    "internal error".to_string(),
+                )
+            }
+        };
+        (status, Json(json!({ "error": message }))).into_response()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn username_validation_accepts_valid() {
+        for u in ["ab", "alice", "user.name", "a_b-c", "00bot00"] {
+            assert!(validate_username(u).is_ok(), "should accept {u}");
+        }
+    }
+
+    #[test]
+    fn username_validation_rejects_invalid() {
+        for u in ["", "a", "Alice", "user name", "user@domain", "user!"] {
+            assert!(validate_username(u).is_err(), "should reject {u:?}");
+        }
+        let too_long = "x".repeat(33);
+        assert!(validate_username(&too_long).is_err());
+    }
+
+    #[test]
+    fn password_validation_enforces_min_length() {
+        assert!(validate_password("1234567").is_err());
+        assert!(validate_password("12345678").is_ok());
+        assert!(validate_password("a-very-long-password-with-spaces and stuff").is_ok());
+    }
+}

crates/manager-core/src/auth.rs

@@ -0,0 +1,132 @@
+//! Pure auth helpers: password hashing, session-token generation, and
+//! token-to-hash conversion. No DB, no HTTP — repos and middleware live
+//! in their own modules. Keeping this surface pure also keeps the unit
+//! tests fast (no Postgres needed).
+//!
+//! Hash algorithm is Argon2id with the OWASP default parameters
+//! (`Argon2::default()`). Tokens are 32 cryptographically random bytes
+//! base64-url-encoded for the wire; their SHA-256 (hex) is what hits the
+//! sessions table.
+
+use argon2::password_hash::rand_core::OsRng as ArgonRng;
+use argon2::password_hash::{PasswordHash, PasswordHasher, PasswordVerifier, SaltString};
+use argon2::Argon2;
+use base64::engine::general_purpose::URL_SAFE_NO_PAD;
+use base64::Engine as _;
+use rand::rngs::OsRng;
+use rand::RngCore;
+use sha2::{Digest, Sha256};
+
+/// Returned when the supplied password hash string isn't a valid PHC
+/// Argon2id encoding. Only surfaces at bootstrap time when the operator
+/// passes `PICLOUD_ADMIN_PASSWORD_HASH`.
+#[derive(Debug, thiserror::Error)]
+#[error("invalid Argon2id PHC hash")]
+pub struct InvalidPasswordHash;
+
+/// Hash a raw password into an Argon2id PHC-formatted string suitable
+/// for `admin_users.password_hash`. The output already encodes the salt
+/// and parameters; nothing else needs to be persisted alongside it.
+pub fn hash_password(raw: &str) -> Result<String, argon2::password_hash::Error> {
+    let salt = SaltString::generate(&mut ArgonRng);
+    let hash = Argon2::default().hash_password(raw.as_bytes(), &salt)?;
+    Ok(hash.to_string())
+}
+
+/// Constant-ish-time verify of a raw password against a PHC hash.
+/// Returns `false` for any error (including malformed stored hash) —
+/// callers should treat that case identically to "wrong password" so
+/// nothing leaks about why auth failed.
+#[must_use]
+pub fn verify_password(stored_hash: &str, raw: &str) -> bool {
+    let Ok(parsed) = PasswordHash::new(stored_hash) else {
+        return false;
+    };
+    Argon2::default()
+        .verify_password(raw.as_bytes(), &parsed)
+        .is_ok()
+}
+
+/// Validate that a string parses as a PHC Argon2id hash — used at
+/// bootstrap to fail fast on malformed `PICLOUD_ADMIN_PASSWORD_HASH`
+/// rather than write garbage into the DB and discover it at first login.
+pub fn validate_password_hash(stored_hash: &str) -> Result<(), InvalidPasswordHash> {
+    PasswordHash::new(stored_hash).map_err(|_| InvalidPasswordHash)?;
+    Ok(())
+}
+
+/// Newly minted session token: `raw` goes to the client (cookie + JSON
+/// response), `hash` is what gets stored. Raw is unrecoverable from hash
+/// even if the DB leaks.
+pub struct GeneratedToken {
+    pub raw: String,
+    pub hash: String,
+}
+
+/// Generate a fresh session token (32 random bytes base64-url-encoded).
+/// Always succeeds — `OsRng::fill_bytes` panics on entropy failure
+/// instead of returning, but that's a non-recoverable system condition.
+#[must_use]
+pub fn generate_session_token() -> GeneratedToken {
+    let mut bytes = [0u8; 32];
+    OsRng.fill_bytes(&mut bytes);
+    let raw = URL_SAFE_NO_PAD.encode(bytes);
+    let hash = hash_token(&raw);
+    GeneratedToken { raw, hash }
+}
+
+/// SHA-256(raw) as lower-case hex. Stable lookup key for
+/// `admin_sessions.token_hash`.
+#[must_use]
+pub fn hash_token(raw: &str) -> String {
+    let digest = Sha256::digest(raw.as_bytes());
+    hex(&digest)
+}
+
+fn hex(bytes: &[u8]) -> String {
+    const HEX: &[u8; 16] = b"0123456789abcdef";
+    let mut out = String::with_capacity(bytes.len() * 2);
+    for &b in bytes {
+        out.push(HEX[(b >> 4) as usize] as char);
+        out.push(HEX[(b & 0x0f) as usize] as char);
+    }
+    out
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn hash_verify_roundtrip() {
+        let h = hash_password("correct horse battery staple").unwrap();
+        assert!(verify_password(&h, "correct horse battery staple"));
+        assert!(!verify_password(&h, "wrong"));
+    }
+
+    #[test]
+    fn verify_returns_false_on_malformed_hash() {
+        assert!(!verify_password("not-a-phc-string", "anything"));
+    }
+
+    #[test]
+    fn validate_password_hash_accepts_phc() {
+        let h = hash_password("pw").unwrap();
+        assert!(validate_password_hash(&h).is_ok());
+    }
+
+    #[test]
+    fn validate_password_hash_rejects_garbage() {
+        assert!(validate_password_hash("not a hash").is_err());
+    }
+
+    #[test]
+    fn generate_token_unique_and_hash_stable() {
+        let a = generate_session_token();
+        let b = generate_session_token();
+        assert_ne!(a.raw, b.raw, "tokens must be unique");
+        assert_ne!(a.hash, b.hash, "hashes must differ");
+        assert_eq!(a.hash, hash_token(&a.raw), "hash must be reproducible");
+        assert_eq!(a.hash.len(), 64, "sha256-hex is 64 chars");
+    }
+}

crates/manager-core/src/auth_api.rs

@@ -0,0 +1,233 @@
+//! `/api/v1/admin/auth/*` — login, logout, who-am-I.
+//!
+//! Login mints an opaque session token, stores its SHA-256, sets the
+//! `picloud_session` HttpOnly cookie, and also returns the raw token in
+//! the JSON body for non-browser clients. The same token works as
+//! `Authorization: Bearer …` afterward; there is no separate "API
+//! token" concept yet.
+//!
+//! Logout deletes the session row regardless of whether the supplied
+//! token matched anything (idempotent). `me` returns the row that the
+//! middleware already attached to the request extensions.
+
+use axum::body::Body;
+use axum::extract::{Extension, Request, State};
+use axum::http::{header, HeaderMap, HeaderValue, StatusCode};
+use axum::middleware::from_fn_with_state;
+use axum::response::{IntoResponse, Json, Response};
+use axum::routing::{get, post};
+use axum::Router;
+use chrono::{DateTime, Duration as ChronoDuration, Utc};
+use picloud_shared::AdminUserId;
+use serde::{Deserialize, Serialize};
+use serde_json::json;
+
+use crate::auth::{generate_session_token, hash_token, verify_password};
+use crate::auth_middleware::{require_admin, AuthState, AuthedAdmin, SESSION_COOKIE};
+
+pub fn auth_router(state: AuthState) -> Router {
+    // /login + /logout are unguarded (login is how you get in; logout
+    // is idempotent). /me is guarded — by definition it needs to know
+    // who you are, so the middleware must run first.
+    let guarded = Router::new()
+        .route("/auth/me", get(me))
+        .route_layer(from_fn_with_state(state.clone(), require_admin));
+
+    Router::new()
+        .route("/auth/login", post(login))
+        .route("/auth/logout", post(logout))
+        .merge(guarded)
+        .with_state(state)
+}
+
+// ----------------------------------------------------------------------------
+// DTOs
+// ----------------------------------------------------------------------------
+
+#[derive(Debug, Deserialize)]
+pub struct LoginRequest {
+    pub username: String,
+    pub password: String,
+}
+
+#[derive(Debug, Serialize)]
+pub struct LoginResponse {
+    pub user: AdminUserDto,
+    pub token: String,
+    pub expires_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Serialize)]
+pub struct AdminUserDto {
+    pub id: AdminUserId,
+    pub username: String,
+}
+
+// ----------------------------------------------------------------------------
+// Handlers
+// ----------------------------------------------------------------------------
+
+async fn login(State(state): State<AuthState>, Json(input): Json<LoginRequest>) -> Response {
+    // Always perform a verify, even on missing/inactive users, to flatten
+    // timing and prevent username enumeration. The dummy hash is a real
+    // Argon2id PHC string for "x" — the verify will simply fail.
+    const DUMMY_HASH: &str = "$argon2id$v=19$m=19456,t=2,p=1$dGltaW5nLWZsYXR0ZW4$Ux6dgPqgX1Mhg5fRgIeKZF3MWdYqJplKEz/cKLcSdks";
+
+    let creds = match state
+        .users
+        .get_credentials_by_username(&input.username)
+        .await
+    {
+        Ok(c) => c,
+        Err(err) => {
+            tracing::error!(?err, "admin_users credentials lookup failed");
+            return internal_error();
+        }
+    };
+
+    let (stored_hash, user_id, username, is_active) = match creds {
+        Some(c) => (c.password_hash, Some(c.id), c.username, c.is_active),
+        None => (DUMMY_HASH.to_string(), None, String::new(), false),
+    };
+
+    let password_ok = verify_password(&stored_hash, &input.password);
+    if !password_ok || user_id.is_none() || !is_active {
+        return invalid_credentials();
+    }
+    let user_id = user_id.unwrap();
+
+    let token = generate_session_token();
+    let expires_at = Utc::now()
+        + ChronoDuration::from_std(state.ttl).unwrap_or_else(|_| ChronoDuration::hours(24));
+
+    if let Err(err) = state
+        .sessions
+        .create(user_id, &token.hash, expires_at)
+        .await
+    {
+        tracing::error!(?err, "admin_sessions insert failed");
+        return internal_error();
+    }
+    if let Err(err) = state.users.touch_last_login(user_id).await {
+        // Non-fatal — log and continue. Login itself succeeded.
+        tracing::warn!(?err, "failed to touch admin last_login_at");
+    }
+
+    let mut headers = HeaderMap::new();
+    headers.insert(
+        header::SET_COOKIE,
+        HeaderValue::from_str(&build_cookie(&token.raw, state.ttl)).unwrap_or_else(|_| {
+            // Cookie text is ASCII-clean by construction; this branch is
+            // unreachable in practice but the type signature requires it.
+            HeaderValue::from_static("")
+        }),
+    );
+
+    (
+        StatusCode::OK,
+        headers,
+        Json(LoginResponse {
+            user: AdminUserDto {
+                id: user_id,
+                username,
+            },
+            token: token.raw,
+            expires_at,
+        }),
+    )
+        .into_response()
+}
+
+async fn logout(State(state): State<AuthState>, req: Request<Body>) -> Response {
+    // Pull token without requiring a valid session (logout is idempotent
+    // and we still want to clear the cookie on the client side).
+    let token = extract_token_for_logout(&req);
+    if let Some(raw) = token {
+        let hash = hash_token(&raw);
+        if let Err(err) = state.sessions.delete(&hash).await {
+            tracing::error!(?err, "admin_sessions delete failed");
+            // Still clear the cookie below.
+        }
+    }
+
+    let mut headers = HeaderMap::new();
+    headers.insert(
+        header::SET_COOKIE,
+        HeaderValue::from_static("picloud_session=; HttpOnly; Path=/; SameSite=Lax; Max-Age=0"),
+    );
+    (StatusCode::NO_CONTENT, headers).into_response()
+}
+
+async fn me(Extension(admin): Extension<AuthedAdmin>) -> Json<AdminUserDto> {
+    Json(AdminUserDto {
+        id: admin.id,
+        username: admin.username,
+    })
+}
+
+// ----------------------------------------------------------------------------
+// Helpers
+// ----------------------------------------------------------------------------
+
+fn build_cookie(raw_token: &str, ttl: std::time::Duration) -> String {
+    // Secure is on by default; flip to off for HTTP-only dev with
+    // PICLOUD_COOKIE_SECURE=0. The header-injected bearer token works
+    // either way, so this is purely for browsers that prefer the cookie
+    // path (e.g., direct API hits without the dashboard's auth.ts).
+    let secure = std::env::var("PICLOUD_COOKIE_SECURE").ok().is_none_or(|v| {
+        !matches!(
+            v.to_ascii_lowercase().as_str(),
+            "0" | "false" | "no" | "off"
+        )
+    });
+    let secure_attr = if secure { "; Secure" } else { "" };
+    format!(
+        "{SESSION_COOKIE}={raw_token}; HttpOnly{secure_attr}; SameSite=Lax; Path=/; Max-Age={}",
+        ttl.as_secs()
+    )
+}
+
+fn extract_token_for_logout(req: &Request<Body>) -> Option<String> {
+    // Same precedence as the middleware — Authorization first, cookie
+    // fallback. Duplicated here because logout has to read the request
+    // before any middleware would run.
+    if let Some(value) = req.headers().get(header::AUTHORIZATION) {
+        if let Ok(s) = value.to_str() {
+            if let Some(token) = s.strip_prefix("Bearer ") {
+                let trimmed = token.trim();
+                if !trimmed.is_empty() {
+                    return Some(trimmed.to_string());
+                }
+            }
+        }
+    }
+    if let Some(value) = req.headers().get(header::COOKIE) {
+        if let Ok(s) = value.to_str() {
+            for chunk in s.split(';') {
+                let chunk = chunk.trim();
+                if let Some(rest) = chunk.strip_prefix(&format!("{SESSION_COOKIE}=")) {
+                    if !rest.is_empty() {
+                        return Some(rest.to_string());
+                    }
+                }
+            }
+        }
+    }
+    None
+}
+
+fn invalid_credentials() -> Response {
+    (
+        StatusCode::UNAUTHORIZED,
+        Json(json!({ "error": "invalid credentials" })),
+    )
+        .into_response()
+}
+
+fn internal_error() -> Response {
+    (
+        StatusCode::INTERNAL_SERVER_ERROR,
+        Json(json!({ "error": "internal error" })),
+    )
+        .into_response()
+}

crates/manager-core/src/auth_bootstrap.rs

@@ -0,0 +1,293 @@
+//! First-run admin seeding from env vars. Idempotent: if any admin
+//! already exists, this is a no-op (and a warning is logged when the
+//! env vars are also set, so the operator notices the inert state).
+//!
+//! On a fresh install, exactly one row is inserted from:
+//!   - `PICLOUD_ADMIN_USERNAME` (required)
+//!   - `PICLOUD_ADMIN_PASSWORD_HASH` (preferred — pre-computed PHC) OR
+//!   - `PICLOUD_ADMIN_PASSWORD` (fallback — raw, hashed on the way in)
+//!
+//! After that initial seed, the env vars become inert. This is
+//! deliberate: the env var is a one-time setup hatch, not a permanent
+//! override (which would let anyone with systemd/compose access change
+//! any admin's password without authentication). Recovery is the CLI
+//! subcommand `picloud admin reset-password <username>`.
+//!
+//! The env-var reading is factored into `BootstrapEnv::from_process`
+//! so the core logic stays pure (and testable) — the only side effect
+//! in `bootstrap_first_admin` is the DB write and a tracing log.
+
+use tracing::{info, warn};
+
+use crate::admin_user_repo::AdminUserRepository;
+use crate::auth::{hash_password, validate_password_hash};
+
+pub const ENV_USERNAME: &str = "PICLOUD_ADMIN_USERNAME";
+pub const ENV_PASSWORD: &str = "PICLOUD_ADMIN_PASSWORD";
+pub const ENV_PASSWORD_HASH: &str = "PICLOUD_ADMIN_PASSWORD_HASH";
+
+#[derive(Debug, thiserror::Error)]
+pub enum BootstrapError {
+    #[error("repository error: {0}")]
+    Repo(#[from] crate::admin_user_repo::AdminUserRepositoryError),
+
+    #[error("{ENV_USERNAME} not set (required to bootstrap the first admin)")]
+    MissingUsername,
+
+    #[error(
+        "no admin password env var set; provide {ENV_PASSWORD_HASH} (preferred) or {ENV_PASSWORD}"
+    )]
+    MissingPassword,
+
+    #[error("{ENV_PASSWORD_HASH} is not a valid Argon2id PHC string")]
+    InvalidHash,
+
+    #[error("failed to hash password: {0}")]
+    HashFailure(String),
+}
+
+/// Captured-at-call-site env values. The fields map 1:1 to the bootstrap
+/// env vars. Read from the live process with `from_process`, or build
+/// directly in tests to keep them free of process-env races.
+#[derive(Debug, Default, Clone)]
+pub struct BootstrapEnv {
+    pub username: Option<String>,
+    pub password: Option<String>,
+    pub password_hash: Option<String>,
+}
+
+impl BootstrapEnv {
+    /// Snapshot the bootstrap env vars from the current process.
+    #[must_use]
+    pub fn from_process() -> Self {
+        Self {
+            username: std::env::var(ENV_USERNAME).ok(),
+            password: std::env::var(ENV_PASSWORD).ok(),
+            password_hash: std::env::var(ENV_PASSWORD_HASH).ok(),
+        }
+    }
+
+    fn any_set(&self) -> bool {
+        self.username.is_some() || self.password.is_some() || self.password_hash.is_some()
+    }
+}
+
+/// Run the bootstrap. Reads env vars from the live process — the
+/// canonical wiring for the binary.
+pub async fn bootstrap_first_admin<R: AdminUserRepository + ?Sized>(
+    repo: &R,
+) -> Result<(), BootstrapError> {
+    bootstrap_first_admin_with(repo, BootstrapEnv::from_process()).await
+}
+
+/// Run the bootstrap against an explicit env. Used by tests to keep
+/// the bootstrap logic independent of process state.
+pub async fn bootstrap_first_admin_with<R: AdminUserRepository + ?Sized>(
+    repo: &R,
+    env: BootstrapEnv,
+) -> Result<(), BootstrapError> {
+    if repo.count_active().await? > 0 {
+        if env.any_set() {
+            warn!(
+                "{ENV_USERNAME}/{ENV_PASSWORD}/{ENV_PASSWORD_HASH} set but admin_users \
+                 already populated — env values ignored. Use \
+                 `picloud admin reset-password <user>` to change a password."
+            );
+        }
+        return Ok(());
+    }
+
+    let username = env.username.ok_or(BootstrapError::MissingUsername)?;
+
+    let password_hash = match (env.password_hash, env.password) {
+        (Some(hash), maybe_raw) => {
+            if maybe_raw.is_some() {
+                warn!(
+                    "both {ENV_PASSWORD_HASH} and {ENV_PASSWORD} set — \
+                     using the pre-computed hash; raw password ignored."
+                );
+            }
+            validate_password_hash(&hash).map_err(|_| BootstrapError::InvalidHash)?;
+            hash
+        }
+        (None, Some(raw)) => {
+            hash_password(&raw).map_err(|e| BootstrapError::HashFailure(e.to_string()))?
+        }
+        (None, None) => return Err(BootstrapError::MissingPassword),
+    };
+
+    repo.create(&username, &password_hash).await?;
+    info!(username = %username, "bootstrapped initial admin user");
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    //! These tests use an in-memory `AdminUserRepository` and the
+    //! `bootstrap_first_admin_with` overload so they never touch
+    //! process-global env vars. They can run in parallel safely.
+
+    use super::*;
+    use async_trait::async_trait;
+    use chrono::Utc;
+    use picloud_shared::AdminUserId;
+    use std::sync::Mutex;
+
+    use crate::admin_user_repo::{AdminUserCredentials, AdminUserRepositoryError, AdminUserRow};
+
+    #[derive(Default)]
+    struct InMemoryRepo {
+        rows: Mutex<Vec<AdminUserRow>>,
+    }
+
+    #[async_trait]
+    impl AdminUserRepository for InMemoryRepo {
+        async fn get(
+            &self,
+            _id: AdminUserId,
+        ) -> Result<Option<AdminUserRow>, AdminUserRepositoryError> {
+            unimplemented!()
+        }
+        async fn get_by_username(
+            &self,
+            _u: &str,
+        ) -> Result<Option<AdminUserRow>, AdminUserRepositoryError> {
+            unimplemented!()
+        }
+        async fn get_credentials_by_username(
+            &self,
+            _u: &str,
+        ) -> Result<Option<AdminUserCredentials>, AdminUserRepositoryError> {
+            unimplemented!()
+        }
+        async fn list(&self) -> Result<Vec<AdminUserRow>, AdminUserRepositoryError> {
+            unimplemented!()
+        }
+        async fn create(
+            &self,
+            username: &str,
+            _password_hash: &str,
+        ) -> Result<AdminUserRow, AdminUserRepositoryError> {
+            let row = AdminUserRow {
+                id: AdminUserId::new(),
+                username: username.to_string(),
+                is_active: true,
+                created_at: Utc::now(),
+                updated_at: Utc::now(),
+                last_login_at: None,
+            };
+            self.rows.lock().unwrap().push(row.clone());
+            Ok(row)
+        }
+        async fn update_username(
+            &self,
+            _i: AdminUserId,
+            _u: &str,
+        ) -> Result<AdminUserRow, AdminUserRepositoryError> {
+            unimplemented!()
+        }
+        async fn update_password_hash(
+            &self,
+            _i: AdminUserId,
+            _h: &str,
+        ) -> Result<AdminUserRow, AdminUserRepositoryError> {
+            unimplemented!()
+        }
+        async fn set_active(
+            &self,
+            _i: AdminUserId,
+            _a: bool,
+        ) -> Result<AdminUserRow, AdminUserRepositoryError> {
+            unimplemented!()
+        }
+        async fn delete(&self, _i: AdminUserId) -> Result<(), AdminUserRepositoryError> {
+            unimplemented!()
+        }
+        async fn touch_last_login(&self, _i: AdminUserId) -> Result<(), AdminUserRepositoryError> {
+            unimplemented!()
+        }
+        async fn count_active(&self) -> Result<i64, AdminUserRepositoryError> {
+            Ok(i64::try_from(self.rows.lock().unwrap().len()).unwrap_or(i64::MAX))
+        }
+        async fn count_active_excluding(
+            &self,
+            _i: AdminUserId,
+        ) -> Result<i64, AdminUserRepositoryError> {
+            unimplemented!()
+        }
+    }
+
+    #[tokio::test]
+    async fn empty_db_creates_admin_from_raw_password() {
+        let repo = InMemoryRepo::default();
+        let env = BootstrapEnv {
+            username: Some("alice".into()),
+            password: Some("supersecret".into()),
+            password_hash: None,
+        };
+        bootstrap_first_admin_with(&repo, env).await.unwrap();
+        assert_eq!(repo.rows.lock().unwrap().len(), 1);
+    }
+
+    #[tokio::test]
+    async fn empty_db_with_pre_hashed_password_succeeds() {
+        let repo = InMemoryRepo::default();
+        let prehashed = hash_password("pw").unwrap();
+        let env = BootstrapEnv {
+            username: Some("alice".into()),
+            password: None,
+            password_hash: Some(prehashed),
+        };
+        bootstrap_first_admin_with(&repo, env).await.unwrap();
+        assert_eq!(repo.rows.lock().unwrap().len(), 1);
+    }
+
+    #[tokio::test]
+    async fn populated_db_is_noop() {
+        let repo = InMemoryRepo::default();
+        repo.create("seeded", "x").await.unwrap();
+        let env = BootstrapEnv {
+            username: Some("alice".into()),
+            password: Some("supersecret".into()),
+            password_hash: None,
+        };
+        bootstrap_first_admin_with(&repo, env).await.unwrap();
+        assert_eq!(repo.rows.lock().unwrap().len(), 1);
+    }
+
+    #[tokio::test]
+    async fn missing_username_fails() {
+        let repo = InMemoryRepo::default();
+        let env = BootstrapEnv {
+            username: None,
+            password: Some("supersecret".into()),
+            password_hash: None,
+        };
+        let err = bootstrap_first_admin_with(&repo, env).await.unwrap_err();
+        assert!(matches!(err, BootstrapError::MissingUsername));
+    }
+
+    #[tokio::test]
+    async fn missing_password_fails() {
+        let repo = InMemoryRepo::default();
+        let env = BootstrapEnv {
+            username: Some("alice".into()),
+            password: None,
+            password_hash: None,
+        };
+        let err = bootstrap_first_admin_with(&repo, env).await.unwrap_err();
+        assert!(matches!(err, BootstrapError::MissingPassword));
+    }
+
+    #[tokio::test]
+    async fn invalid_hash_fails() {
+        let repo = InMemoryRepo::default();
+        let env = BootstrapEnv {
+            username: Some("alice".into()),
+            password: None,
+            password_hash: Some("not a phc hash".into()),
+        };
+        let err = bootstrap_first_admin_with(&repo, env).await.unwrap_err();
+        assert!(matches!(err, BootstrapError::InvalidHash));
+    }
+}

crates/manager-core/src/auth_middleware.rs

@@ -0,0 +1,185 @@
+//! `require_admin` axum middleware: gates a router on a valid admin
+//! session. Accepts the token from either the `picloud_session` cookie
+//! or an `Authorization: Bearer …` header — same token system serves
+//! the dashboard and CLI/CI clients.
+//!
+//! On success, injects `AuthedAdmin` as a request extension so handlers
+//! can `Extension<AuthedAdmin>` to know who's calling. On failure,
+//! returns 401 with a generic JSON body (no enumeration about whether
+//! the token was wrong vs. the user was deactivated).
+
+use std::sync::Arc;
+use std::time::Duration;
+
+use axum::body::Body;
+use axum::extract::{Request, State};
+use axum::http::{header, StatusCode};
+use axum::middleware::Next;
+use axum::response::{IntoResponse, Json, Response};
+use chrono::Utc;
+use picloud_shared::AdminUserId;
+use serde_json::json;
+
+use crate::admin_session_repo::AdminSessionRepository;
+use crate::admin_user_repo::AdminUserRepository;
+use crate::auth::hash_token;
+
+pub const SESSION_COOKIE: &str = "picloud_session";
+
+/// Shared state for auth: the two repos plus the configured sliding
+/// session TTL. Cheap to clone (`Arc` everywhere).
+#[derive(Clone)]
+pub struct AuthState {
+    pub users: Arc<dyn AdminUserRepository>,
+    pub sessions: Arc<dyn AdminSessionRepository>,
+    pub ttl: Duration,
+}
+
+/// Request-extension type that authenticated handlers extract via
+/// `Extension<AuthedAdmin>`. Available only inside guarded routers.
+#[derive(Debug, Clone)]
+pub struct AuthedAdmin {
+    pub id: AdminUserId,
+    pub username: String,
+}
+
+/// Middleware function. Wire with
+/// `axum::middleware::from_fn_with_state(auth_state, require_admin)`.
+pub async fn require_admin(
+    State(state): State<AuthState>,
+    mut req: Request<Body>,
+    next: Next,
+) -> Response {
+    let Some(token) = extract_token(&req) else {
+        return unauthorized();
+    };
+    let token_hash = hash_token(&token);
+
+    let lookup = match state.sessions.lookup(&token_hash).await {
+        Ok(Some(lookup)) => lookup,
+        Ok(None) => return unauthorized(),
+        Err(err) => {
+            tracing::error!(?err, "admin_sessions lookup failed");
+            return internal_error();
+        }
+    };
+
+    // Resolve the user. A deleted user is impossible here (FK cascade
+    // wipes their sessions), but a deactivated user still needs to be
+    // rejected — and so does the edge case of a session predating the
+    // deactivate (we wipe their sessions on deactivate, but a race
+    // could land a request in flight).
+    let user = match state.users.get(lookup.user_id).await {
+        Ok(Some(u)) if u.is_active => u,
+        Ok(_) => return unauthorized(),
+        Err(err) => {
+            tracing::error!(?err, "admin_users lookup failed");
+            return internal_error();
+        }
+    };
+
+    // Sliding window bump. Inline (not fire-and-forget) so a DB blip
+    // surfaces as a request error rather than silent stale sessions.
+    let new_expires_at = Utc::now() + chrono::Duration::from_std(state.ttl).unwrap_or_default();
+    if let Err(err) = state.sessions.touch(&token_hash, new_expires_at).await {
+        tracing::error!(?err, "admin_sessions touch failed");
+        return internal_error();
+    }
+
+    req.extensions_mut().insert(AuthedAdmin {
+        id: user.id,
+        username: user.username,
+    });
+    next.run(req).await
+}
+
+/// Pull the bearer token out of an `Authorization` header (preferred)
+/// or the `picloud_session` cookie (fallback for browser clients).
+fn extract_token(req: &Request<Body>) -> Option<String> {
+    if let Some(value) = req.headers().get(header::AUTHORIZATION) {
+        if let Ok(s) = value.to_str() {
+            if let Some(token) = s.strip_prefix("Bearer ") {
+                let trimmed = token.trim();
+                if !trimmed.is_empty() {
+                    return Some(trimmed.to_string());
+                }
+            }
+        }
+    }
+    if let Some(value) = req.headers().get(header::COOKIE) {
+        if let Ok(s) = value.to_str() {
+            for chunk in s.split(';') {
+                let chunk = chunk.trim();
+                if let Some(rest) = chunk.strip_prefix(&format!("{SESSION_COOKIE}=")) {
+                    if !rest.is_empty() {
+                        return Some(rest.to_string());
+                    }
+                }
+            }
+        }
+    }
+    None
+}
+
+fn unauthorized() -> Response {
+    (
+        StatusCode::UNAUTHORIZED,
+        Json(json!({ "error": "authentication required" })),
+    )
+        .into_response()
+}
+
+fn internal_error() -> Response {
+    (
+        StatusCode::INTERNAL_SERVER_ERROR,
+        Json(json!({ "error": "internal error" })),
+    )
+        .into_response()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use axum::http::Request;
+
+    fn req_with_header(name: &str, value: &str) -> Request<Body> {
+        Request::builder()
+            .header(name, value)
+            .body(Body::empty())
+            .unwrap()
+    }
+
+    #[test]
+    fn extracts_bearer_token() {
+        let r = req_with_header("authorization", "Bearer abc123");
+        assert_eq!(extract_token(&r).as_deref(), Some("abc123"));
+    }
+
+    #[test]
+    fn ignores_bearer_with_no_token() {
+        let r = req_with_header("authorization", "Bearer ");
+        assert_eq!(extract_token(&r), None);
+    }
+
+    #[test]
+    fn extracts_cookie_token() {
+        let r = req_with_header("cookie", "foo=bar; picloud_session=xyz; baz=qux");
+        assert_eq!(extract_token(&r).as_deref(), Some("xyz"));
+    }
+
+    #[test]
+    fn bearer_wins_over_cookie() {
+        let r = Request::builder()
+            .header("authorization", "Bearer header-token")
+            .header("cookie", "picloud_session=cookie-token")
+            .body(Body::empty())
+            .unwrap();
+        assert_eq!(extract_token(&r).as_deref(), Some("header-token"));
+    }
+
+    #[test]
+    fn returns_none_when_neither_present() {
+        let r = Request::builder().body(Body::empty()).unwrap();
+        assert_eq!(extract_token(&r), None);
+    }
+}

crates/manager-core/src/lib.rs

@@ -4,7 +4,14 @@
 //! the same DB for now; once we add caching and per-node ingress, the
 //! manager will publish change events.
 
+pub mod admin_session_repo;
+pub mod admin_user_repo;
+pub mod admin_users_api;
 pub mod api;
+pub mod auth;
+pub mod auth_api;
+pub mod auth_bootstrap;
+pub mod auth_middleware;
 pub mod log_sink;
 pub mod migrations;
 pub mod repo;
@@ -13,7 +20,21 @@ pub mod route_repo;
 pub mod sandbox;
 pub mod scheduler;
 
+pub use admin_session_repo::{
+    AdminSessionLookup, AdminSessionRepository, AdminSessionRepositoryError,
+    PostgresAdminSessionRepository,
+};
+pub use admin_user_repo::{
+    AdminUserCredentials, AdminUserRepository, AdminUserRepositoryError, AdminUserRow,
+    PostgresAdminUserRepository,
+};
+pub use admin_users_api::{admins_router, AdminsState};
 pub use api::{admin_router, AdminState};
+pub use auth_api::auth_router;
+pub use auth_bootstrap::{
+    bootstrap_first_admin, bootstrap_first_admin_with, BootstrapEnv, BootstrapError,
+};
+pub use auth_middleware::{require_admin, AuthState, AuthedAdmin, SESSION_COOKIE};
 pub use log_sink::PostgresExecutionLogSink;
 pub use repo::{
     ExecutionLogRepository, NewScript, PostgresExecutionLogRepository, PostgresScriptRepository,

crates/picloud/src/lib.rs

@@ -6,10 +6,13 @@
 use std::sync::Arc;
 use std::time::Duration;
 
+use axum::middleware::from_fn_with_state;
 use axum::{routing::get, Json, Router};
 use picloud_executor_core::{Engine, Limits};
 use picloud_manager_core::{
-    admin_router, compile_routes, migrations, route_admin_router, AdminState,
+    admin_router, admins_router, auth_router, compile_routes, migrations, require_admin,
+    route_admin_router, AdminSessionRepository, AdminState, AdminUserRepository, AdminsState,
+    AuthState, PostgresAdminSessionRepository, PostgresAdminUserRepository,
     PostgresExecutionLogRepository, PostgresExecutionLogSink, PostgresRouteRepository,
     PostgresScriptRepository, RepoResolver, RouteAdminState, RouteRepository, SandboxCeiling,
 };
@@ -24,6 +27,38 @@ use sqlx::postgres::PgPoolOptions;
 use sqlx::PgPool;
 use tower_http::trace::TraceLayer;
 
+/// Default session TTL when `PICLOUD_SESSION_TTL_HOURS` isn't set.
+const DEFAULT_SESSION_TTL_HOURS: u64 = 24;
+
+/// Bundles the auth-related dependencies that both `build_app` and the
+/// startup bootstrap need. Built once in `main.rs` from the shared pool.
+pub struct AuthDeps {
+    pub users: Arc<dyn AdminUserRepository>,
+    pub sessions: Arc<dyn AdminSessionRepository>,
+    pub ttl: Duration,
+}
+
+impl AuthDeps {
+    /// Construct from a pool with the binary's standard defaults.
+    #[must_use]
+    pub fn from_pool(pool: PgPool) -> Self {
+        Self {
+            users: Arc::new(PostgresAdminUserRepository::new(pool.clone())),
+            sessions: Arc::new(PostgresAdminSessionRepository::new(pool)),
+            ttl: read_session_ttl(),
+        }
+    }
+}
+
+fn read_session_ttl() -> Duration {
+    let hours = std::env::var("PICLOUD_SESSION_TTL_HOURS")
+        .ok()
+        .and_then(|s| s.parse::<u64>().ok())
+        .filter(|h| *h > 0)
+        .unwrap_or(DEFAULT_SESSION_TTL_HOURS);
+    Duration::from_secs(hours * 3600)
+}
+
 /// Compose the manager + orchestrator routes on top of a shared
 /// Postgres pool, returning an Axum router ready to be served.
 ///
@@ -31,7 +66,15 @@ use tower_http::trace::TraceLayer;
 /// is mounted by Caddy at `/admin/*` (its base path). Anything else
 /// falls through to the user-route table — user scripts can bind to
 /// arbitrary paths (subject to the reserved-prefix list).
-pub async fn build_app(pool: PgPool) -> anyhow::Result<Router> {
+///
+/// `auth` carries the admin user/session repositories and the
+/// configured session TTL. The manager-side admin endpoints
+/// (`/api/v1/admin/scripts/*`, `/api/v1/admin/routes/*`,
+/// `/api/v1/admin/admins/*`, `/api/v1/admin/auth/me`) are guarded by
+/// the `require_admin` middleware. The data plane
+/// (`/api/v1/execute/{id}`, the user-route fallthrough, `/healthz`,
+/// `/version`) stays open — it's the public ingress for user scripts.
+pub async fn build_app(pool: PgPool, auth: AuthDeps) -> anyhow::Result<Router> {
     let engine = Arc::new(Engine::new(Limits::default()));
 
     let script_repo = Arc::new(PostgresScriptRepository::new(pool.clone()));
@@ -68,9 +111,29 @@ pub async fn build_app(pool: PgPool) -> anyhow::Result<Router> {
         routes: route_table,
     };
 
+    let auth_state = AuthState {
+        users: auth.users.clone(),
+        sessions: auth.sessions.clone(),
+        ttl: auth.ttl,
+    };
+    let admins_state = AdminsState {
+        users: auth.users,
+        sessions: auth.sessions,
+    };
+
+    // /admin/auth/login + /logout are unguarded by design (login is how
+    // you get in). /admin/auth/me applies the middleware internally so
+    // the same Router::with_state machinery composes cleanly. Everything
+    // else under /admin gets the require_admin layer.
+    let guarded_admin = Router::new()
+        .merge(admin_router(admin))
+        .merge(route_admin_router(route_admin))
+        .merge(admins_router(admins_state))
+        .layer(from_fn_with_state(auth_state.clone(), require_admin));
+
     let api_v1 = Router::new()
-        .nest("/admin", admin_router(admin))
-        .nest("/admin", route_admin_router(route_admin))
+        .nest("/admin", auth_router(auth_state))
+        .nest("/admin", guarded_admin)
         .merge(data_plane_router(data_plane.clone()));
 
     Ok(Router::new()

crates/picloud/src/main.rs

@@ -1,17 +1,36 @@
 //! PiCloud all-in-one binary — see `lib.rs` for the actual app
 //! composition; this file is only the runtime shell (env config,
-//! logger, migrations, listener).
+//! logger, migrations, listener) plus the small `admin` CLI subcommand
+//! used for out-of-band password recovery.
 
+use std::io::{BufRead, Write};
 use std::net::SocketAddr;
+use std::sync::Arc;
+use std::time::Duration;
 
-use picloud::{build_app, init_db};
-use picloud_manager_core::migrations;
+use picloud::{build_app, init_db, AuthDeps};
+use picloud_manager_core::{
+    auth::{hash_password, validate_password_hash},
+    bootstrap_first_admin, migrations, AdminSessionRepository, AdminUserRepository,
+};
 use tracing_subscriber::EnvFilter;
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
     init_tracing();
 
+    // Subcommand dispatch — `picloud admin reset-password <username>`.
+    // Kept handwritten to avoid pulling clap in just for one verb. Falls
+    // through to the server when no subcommand is given.
+    let args: Vec<String> = std::env::args().collect();
+    if args.get(1).map(String::as_str) == Some("admin") {
+        return run_admin_cli(&args[2..]).await;
+    }
+
+    run_server().await
+}
+
+async fn run_server() -> anyhow::Result<()> {
     let addr: SocketAddr = std::env::var("PICLOUD_BIND")
         .unwrap_or_else(|_| "0.0.0.0:8080".into())
         .parse()?;
@@ -22,7 +41,15 @@ async fn main() -> anyhow::Result<()> {
     migrations::run(&pool).await?;
     tracing::info!("migrations applied");
 
-    let app = build_app(pool).await?;
+    let auth = AuthDeps::from_pool(pool.clone());
+    bootstrap_first_admin(&*auth.users).await?;
+
+    // Background session-prune sweep. Cheap; keeps the table from
+    // growing unbounded. Expired rows are also rejected at lookup time,
+    // so a delayed sweep can't extend session lifetimes.
+    spawn_session_pruner(auth.sessions.clone());
+
+    let app = build_app(pool, auth).await?;
 
     let listener = tokio::net::TcpListener::bind(addr).await?;
     tracing::info!(%addr, "picloud all-in-one listening");
@@ -33,6 +60,112 @@ async fn main() -> anyhow::Result<()> {
     Ok(())
 }
 
+fn spawn_session_pruner(sessions: Arc<dyn AdminSessionRepository>) {
+    tokio::spawn(async move {
+        let mut ticker = tokio::time::interval(Duration::from_secs(600));
+        // First tick fires immediately; skip it so we don't race startup.
+        ticker.tick().await;
+        loop {
+            ticker.tick().await;
+            match sessions.prune_expired().await {
+                Ok(n) if n > 0 => tracing::debug!(pruned = n, "expired admin sessions pruned"),
+                Ok(_) => {}
+                Err(err) => tracing::warn!(?err, "admin session prune failed"),
+            }
+        }
+    });
+}
+
+// ----------------------------------------------------------------------------
+// `admin` subcommand
+// ----------------------------------------------------------------------------
+
+async fn run_admin_cli(args: &[String]) -> anyhow::Result<()> {
+    match args.first().map(String::as_str) {
+        Some("reset-password") => {
+            let username = args.get(1).ok_or_else(|| {
+                anyhow::anyhow!(
+                    "usage: picloud admin reset-password <username> [--password-hash <hash>]"
+                )
+            })?;
+            // Optional inline hash via --password-hash <hash>; otherwise
+            // read a raw password from stdin.
+            let hash_arg = parse_flag(&args[2..], "--password-hash");
+            cmd_reset_password(username, hash_arg).await
+        }
+        Some(other) => Err(anyhow::anyhow!("unknown admin subcommand: {other}")),
+        None => Err(anyhow::anyhow!(
+            "usage: picloud admin reset-password <username>"
+        )),
+    }
+}
+
+fn parse_flag(args: &[String], name: &str) -> Option<String> {
+    let mut it = args.iter();
+    while let Some(a) = it.next() {
+        if a == name {
+            return it.next().cloned();
+        }
+    }
+    None
+}
+
+async fn cmd_reset_password(username: &str, password_hash: Option<String>) -> anyhow::Result<()> {
+    let database_url =
+        std::env::var("DATABASE_URL").map_err(|_| anyhow::anyhow!("DATABASE_URL is required"))?;
+    let pool = init_db(&database_url).await?;
+    migrations::run(&pool).await?;
+
+    let users = picloud_manager_core::PostgresAdminUserRepository::new(pool.clone());
+    let sessions = picloud_manager_core::PostgresAdminSessionRepository::new(pool);
+
+    let target = users
+        .get_by_username(username)
+        .await?
+        .ok_or_else(|| anyhow::anyhow!("no admin user named {username:?}"))?;
+
+    let hash = if let Some(h) = password_hash {
+        validate_password_hash(&h)
+            .map_err(|_| anyhow::anyhow!("--password-hash is not a valid Argon2id PHC string"))?;
+        h
+    } else {
+        let raw = prompt_password_from_stdin()?;
+        hash_password(&raw).map_err(|e| anyhow::anyhow!("failed to hash password: {e}"))?
+    };
+
+    users.update_password_hash(target.id, &hash).await?;
+    // Recovery implies the operator already lost control of the account;
+    // re-activate it (so a deactivated admin can also recover) and wipe
+    // any pre-existing sessions in case the original holder is still
+    // signed in elsewhere.
+    if !target.is_active {
+        users.set_active(target.id, true).await?;
+    }
+    let dropped = sessions.delete_for_user(target.id).await?;
+
+    println!("Password reset for {username}. Sessions dropped: {dropped}. Active: true.");
+    Ok(())
+}
+
+fn prompt_password_from_stdin() -> anyhow::Result<String> {
+    eprint!("New password (will be read from stdin, no echo): ");
+    std::io::stderr().flush().ok();
+    let mut line = String::new();
+    std::io::stdin()
+        .lock()
+        .read_line(&mut line)
+        .map_err(|e| anyhow::anyhow!("failed to read stdin: {e}"))?;
+    let pw = line.trim_end_matches(['\n', '\r']).to_string();
+    if pw.is_empty() {
+        return Err(anyhow::anyhow!("password must not be empty"));
+    }
+    Ok(pw)
+}
+
+// ----------------------------------------------------------------------------
+// Misc
+// ----------------------------------------------------------------------------
+
 fn init_tracing() {
     tracing_subscriber::fmt()
         .with_env_filter(EnvFilter::try_from_default_env().unwrap_or_else(|_| "info".into()))

crates/picloud/tests/api.rs

@@ -17,9 +17,35 @@ use axum_test::TestServer;
 use serde_json::{json, Value};
 use sqlx::PgPool;
 
+/// Build the all-in-one app over the test pool, seed a single admin
+/// directly through the repo (bypassing the env-var bootstrap path so
+/// tests don't contaminate the process environment), log in, and bake
+/// the bearer token into the TestServer as a default header so every
+/// request in the test passes the `require_admin` middleware.
 async fn server(pool: PgPool) -> TestServer {
-    let app = picloud::build_app(pool).await.expect("build_app");
-    TestServer::new(app).expect("TestServer should build")
+    use picloud_manager_core::auth::hash_password;
+
+    let auth = picloud::AuthDeps::from_pool(pool.clone());
+    let hash = hash_password("test-pw").expect("hash");
+    auth.users
+        .create("test-admin", &hash)
+        .await
+        .expect("seed admin");
+
+    let app = picloud::build_app(pool, auth).await.expect("build_app");
+    let mut server = TestServer::new(app).expect("TestServer should build");
+
+    let resp = server
+        .post("/api/v1/admin/auth/login")
+        .json(&json!({ "username": "test-admin", "password": "test-pw" }))
+        .await;
+    resp.assert_status_ok();
+    let token = resp.json::<Value>()["token"]
+        .as_str()
+        .expect("login should return token")
+        .to_string();
+    server.add_header("authorization", format!("Bearer {token}"));
+    server
 }
 
 // ============================================================================
@@ -705,7 +731,7 @@ async fn version_includes_public_base_url(pool: PgPool) {
     let v: Value = r.json();
     assert!(v["public_base_url"].is_string());
     assert_eq!(v["api"], 1);
-    assert_eq!(v["schema"], 3);
+    assert_eq!(v["schema"], 4);
     assert_eq!(v["sdk"], "1.1");
 }
 

crates/shared/src/ids.rs

@@ -50,3 +50,4 @@ macro_rules! id_type {
 id_type!(ScriptId);
 id_type!(ExecutionId);
 id_type!(RequestId);
+id_type!(AdminUserId);

crates/shared/src/lib.rs

@@ -16,7 +16,7 @@ pub mod version;
 
 pub use error::Error;
 pub use execution_log::{ExecutionLog, ExecutionStatus};
-pub use ids::{ExecutionId, RequestId, ScriptId};
+pub use ids::{AdminUserId, ExecutionId, RequestId, ScriptId};
 pub use log_sink::{ExecutionLogSink, LogSinkError};
 pub use route::{HostKind, PathKind, Route};
 pub use sandbox::ScriptSandbox;

dashboard/package-lock.json

@@ -1,12 +1,23 @@
 {
   "name": "picloud-dashboard",
-  "version": "0.1.0",
+  "version": "0.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "picloud-dashboard",
-      "version": "0.1.0",
+      "version": "0.5.0",
+      "dependencies": {
+        "@codemirror/autocomplete": "^6.20.2",
+        "@codemirror/commands": "^6.10.3",
+        "@codemirror/lang-json": "^6.0.2",
+        "@codemirror/language": "^6.12.3",
+        "@codemirror/search": "^6.7.0",
+        "@codemirror/state": "^6.6.0",
+        "@codemirror/view": "^6.43.0",
+        "@lezer/highlight": "^1.2.3",
+        "codemirror": "^6.0.2"
+      },
       "devDependencies": {
         "@eslint/js": "^9.18.0",
         "@sveltejs/adapter-static": "^3.0.8",
@@ -23,7 +34,99 @@
         "svelte-check": "^4.1.4",
         "typescript": "^5.7.3",
         "typescript-eslint": "^8.20.0",
-        "vite": "^6.0.7"
+        "vite": "^6.0.7",
+        "vitest": "^3.0.5"
+      }
+    },
+    "node_modules/@codemirror/autocomplete": {
+      "version": "6.20.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/autocomplete/-/autocomplete-6.20.2.tgz",
+      "integrity": "sha512-G5FPkgIiLjOgZMjqVjvuKQ1rGPtHogLldJr33eFJdVLtmwY+giGrlv/ewljLz6b9BSQLkjxuwBc6g6omDM+YxQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.17.0",
+        "@lezer/common": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/commands": {
+      "version": "6.10.3",
+      "resolved": "https://registry.npmjs.org/@codemirror/commands/-/commands-6.10.3.tgz",
+      "integrity": "sha512-JFRiqhKu+bvSkDLI+rUhJwSxQxYb759W5GBezE8Uc8mHLqC9aV/9aTC7yJSqCtB3F00pylrLCwnyS91Ap5ej4Q==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/state": "^6.6.0",
+        "@codemirror/view": "^6.27.0",
+        "@lezer/common": "^1.1.0"
+      }
+    },
+    "node_modules/@codemirror/lang-json": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-json/-/lang-json-6.0.2.tgz",
+      "integrity": "sha512-x2OtO+AvwEHrEwR0FyyPtfDUiloG3rnVTSZV1W8UteaLL8/MajQd8DpvUb2YVzC+/T18aSDv0H9mu+xw0EStoQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@lezer/json": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/language": {
+      "version": "6.12.3",
+      "resolved": "https://registry.npmjs.org/@codemirror/language/-/language-6.12.3.tgz",
+      "integrity": "sha512-QwCZW6Tt1siP37Jet9Tb02Zs81TQt6qQrZR2H+eGMcFsL1zMrk2/b9CLC7/9ieP1fjIUMgviLWMmgiHoJrj+ZA==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.23.0",
+        "@lezer/common": "^1.5.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0",
+        "style-mod": "^4.0.0"
+      }
+    },
+    "node_modules/@codemirror/lint": {
+      "version": "6.9.6",
+      "resolved": "https://registry.npmjs.org/@codemirror/lint/-/lint-6.9.6.tgz",
+      "integrity": "sha512-6Kp7r6XfCi/D/5sdXieMfg9pJU1bUEx96WITuLU6ESaKizCz0QHFMjY/TaFSbigDdEAIgi93itLBIUETP4oK+A==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.42.0",
+        "crelt": "^1.0.5"
+      }
+    },
+    "node_modules/@codemirror/search": {
+      "version": "6.7.0",
+      "resolved": "https://registry.npmjs.org/@codemirror/search/-/search-6.7.0.tgz",
+      "integrity": "sha512-ZvGm99wc/s2cITtMT15LFdn8aH/aS+V+DqyGq/N5ZlV5vWtH+nILvC2nw0zX7ByNoHHDZ2IxxdW38O0tc5nVHg==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.37.0",
+        "crelt": "^1.0.5"
+      }
+    },
+    "node_modules/@codemirror/state": {
+      "version": "6.6.0",
+      "resolved": "https://registry.npmjs.org/@codemirror/state/-/state-6.6.0.tgz",
+      "integrity": "sha512-4nbvra5R5EtiCzr9BTHiTLc+MLXK2QGiAVYMyi8PkQd3SR+6ixar/Q/01Fa21TBIDOZXgeWV4WppsQolSreAPQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@marijn/find-cluster-break": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/view": {
+      "version": "6.43.0",
+      "resolved": "https://registry.npmjs.org/@codemirror/view/-/view-6.43.0.tgz",
+      "integrity": "sha512-V7ZCLQO3Jus9hzh2jVCCPW3mO4IBMr43O37PqSUYautJSnnJF41YlgLw21x0fLJTYvJ+Vkm6Gp+qKGH9pltgXA==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^6.6.0",
+        "crelt": "^1.0.6",
+        "style-mod": "^4.1.0",
+        "w3c-keyname": "^2.2.4"
       }
     },
     "node_modules/@esbuild/aix-ppc64": {
@@ -741,6 +844,47 @@
         "@jridgewell/sourcemap-codec": "^1.4.14"
       }
     },
+    "node_modules/@lezer/common": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/@lezer/common/-/common-1.5.2.tgz",
+      "integrity": "sha512-sxQE460fPZyU3sdc8lafxiPwJHBzZRy/udNFynGQky1SePYBdhkBl1kOagA9uT3pxR8K09bOrmTUqA9wb/PjSQ==",
+      "license": "MIT"
+    },
+    "node_modules/@lezer/highlight": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/@lezer/highlight/-/highlight-1.2.3.tgz",
+      "integrity": "sha512-qXdH7UqTvGfdVBINrgKhDsVTJTxactNNxLk7+UMwZhU13lMHaOBlJe9Vqp907ya56Y3+ed2tlqzys7jDkTmW0g==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.3.0"
+      }
+    },
+    "node_modules/@lezer/json": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@lezer/json/-/json-1.0.3.tgz",
+      "integrity": "sha512-BP9KzdF9Y35PDpv04r0VeSTKDeox5vVr3efE7eBbx3r4s3oNLfunchejZhjArmeieBH+nVOpgIiBJpEAv8ilqQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
+    "node_modules/@lezer/lr": {
+      "version": "1.4.10",
+      "resolved": "https://registry.npmjs.org/@lezer/lr/-/lr-1.4.10.tgz",
+      "integrity": "sha512-rnCpTIBafOx4mRp43xOxDJbFipJm/c0cia/V5TiGlhmMa+wsSdoGmUN3w5Bqrks/09Q/D4tNAmWaT8p6NRi77A==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.0.0"
+      }
+    },
+    "node_modules/@marijn/find-cluster-break": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@marijn/find-cluster-break/-/find-cluster-break-1.0.2.tgz",
+      "integrity": "sha512-l0h88YhZFyKdXIFNfSWpyjStDjGHwZ/U7iobcK1cQQD8sejsONdQtTVU+1wVN1PBw40PiiHB1vA5S7VTfQiP9g==",
+      "license": "MIT"
+    },
     "node_modules/@polka/url": {
       "version": "1.0.0-next.29",
       "resolved": "https://registry.npmjs.org/@polka/url/-/url-1.0.0-next.29.tgz",
@@ -1209,6 +1353,17 @@
         "vite": "^6.0.0"
       }
     },
+    "node_modules/@types/chai": {
+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-5.2.3.tgz",
+      "integrity": "sha512-Mw558oeA9fFbv65/y4mHtXDs9bPnFMZAL/jxdPFUpOHHIXX91mcgEHbS5Lahr+pwZFR8A7GQleRWeI6cGFC2UA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/deep-eql": "*",
+        "assertion-error": "^2.0.1"
+      }
+    },
     "node_modules/@types/cookie": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/@types/cookie/-/cookie-0.6.0.tgz",
@@ -1216,6 +1371,13 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/deep-eql": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/@types/deep-eql/-/deep-eql-4.0.2.tgz",
+      "integrity": "sha512-c9h9dVVMigMPc4bwTvC5dxqtqJZwQPePsWjPlpSOnojbor6pGqdk541lfA7AqFQr5pB1BRdq0juY9db81BwyFw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/estree": {
       "version": "1.0.9",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.9.tgz",
@@ -1532,6 +1694,121 @@
         "url": "https://opencollective.com/eslint"
       }
     },
+    "node_modules/@vitest/expect": {
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+    "node_modules/vite-node": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/vite-node/-/vite-node-3.2.4.tgz",
+      "integrity": "sha512-EbKSKh+bh1E1IFxeO0pg1n4dvoOTt0UDiXMd/qn++r98+jPO1xtJilvXldeuQ8giIB5IkpjCgMleHMNEsGH6pg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "cac": "^6.7.14",
+        "debug": "^4.4.1",
+        "es-module-lexer": "^1.7.0",
+        "pathe": "^2.0.3",
+        "vite": "^5.0.0 || ^6.0.0 || ^7.0.0-0"
+      },
+      "bin": {
+        "vite-node": "vite-node.mjs"
+      },
+      "engines": {
+        "node": "^18.0.0 || ^20.0.0 || >=22.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      }
+    },
     "node_modules/vitefu": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/vitefu/-/vitefu-1.1.3.tgz",
@@ -3270,6 +3790,85 @@
         }
       }
     },
+    "node_modules/vitest": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/vitest/-/vitest-3.2.4.tgz",
+      "integrity": "sha512-LUCP5ev3GURDysTWiP47wRRUpLKMOfPh+yKTx3kVIEiu5KOMeqzpnYNsKyOoVrULivR8tLcks4+lga33Whn90A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/chai": "^5.2.2",
+        "@vitest/expect": "3.2.4",
+        "@vitest/mocker": "3.2.4",
+        "@vitest/pretty-format": "^3.2.4",
+        "@vitest/runner": "3.2.4",
+        "@vitest/snapshot": "3.2.4",
+        "@vitest/spy": "3.2.4",
+        "@vitest/utils": "3.2.4",
+        "chai": "^5.2.0",
+        "debug": "^4.4.1",
+        "expect-type": "^1.2.1",
+        "magic-string": "^0.30.17",
+        "pathe": "^2.0.3",
+        "picomatch": "^4.0.2",
+        "std-env": "^3.9.0",
+        "tinybench": "^2.9.0",
+        "tinyexec": "^0.3.2",
+        "tinyglobby": "^0.2.14",
+        "tinypool": "^1.1.1",
+        "tinyrainbow": "^2.0.0",
+        "vite": "^5.0.0 || ^6.0.0 || ^7.0.0-0",
+        "vite-node": "3.2.4",
+        "why-is-node-running": "^2.3.0"
+      },
+      "bin": {
+        "vitest": "vitest.mjs"
+      },
+      "engines": {
+        "node": "^18.0.0 || ^20.0.0 || >=22.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      },
+      "peerDependencies": {
+        "@edge-runtime/vm": "*",
+        "@types/debug": "^4.1.12",
+        "@types/node": "^18.0.0 || ^20.0.0 || >=22.0.0",
+        "@vitest/browser": "3.2.4",
+        "@vitest/ui": "3.2.4",
+        "happy-dom": "*",
+        "jsdom": "*"
+      },
+      "peerDependenciesMeta": {
+        "@edge-runtime/vm": {
+          "optional": true
+        },
+        "@types/debug": {
+          "optional": true
+        },
+        "@types/node": {
+          "optional": true
+        },
+        "@vitest/browser": {
+          "optional": true
+        },
+        "@vitest/ui": {
+          "optional": true
+        },
+        "happy-dom": {
+          "optional": true
+        },
+        "jsdom": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/w3c-keyname": {
+      "version": "2.2.8",
+      "resolved": "https://registry.npmjs.org/w3c-keyname/-/w3c-keyname-2.2.8.tgz",
+      "integrity": "sha512-dpojBhNsCNN7T82Tm7k26A6G9ML3NkhDsnw9n/eoxSRlVBB4CEtIQ/KTCLI2Fwf3ataSXRhYFkQi3SlnFwPvPQ==",
+      "license": "MIT"
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
@@ -3286,6 +3885,23 @@
         "node": ">= 8"
       }
     },
+    "node_modules/why-is-node-running": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/why-is-node-running/-/why-is-node-running-2.3.0.tgz",
+      "integrity": "sha512-hUrmaWBdVDcxvYqnyh09zunKzROWjbZTiNy8dBEjkS7ehEDQibXJ7XvlmtbwuTclUiIyN+CyXQD4Vmko8fNm8w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "siginfo": "^2.0.0",
+        "stackback": "0.0.2"
+      },
+      "bin": {
+        "why-is-node-running": "cli.js"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/word-wrap": {
       "version": "1.2.5",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",

dashboard/package.json

@@ -1,6 +1,6 @@
 {
   "name": "picloud-dashboard",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "private": true,
   "type": "module",
   "scripts": {
@@ -10,14 +10,15 @@
     "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
     "check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
     "format": "prettier --write .",
-    "lint": "prettier --check . && eslint ."
+    "lint": "prettier --check . && eslint .",
+    "test": "vitest run"
   },
   "devDependencies": {
     "@eslint/js": "^9.18.0",
     "@sveltejs/adapter-static": "^3.0.8",
-    "@types/node": "^22.10.5",
     "@sveltejs/kit": "^2.17.0",
     "@sveltejs/vite-plugin-svelte": "^5.0.3",
+    "@types/node": "^22.10.5",
     "eslint": "^9.18.0",
     "eslint-config-prettier": "^10.0.1",
     "eslint-plugin-svelte": "^3.0.0",
@@ -28,9 +29,21 @@
     "svelte-check": "^4.1.4",
     "typescript": "^5.7.3",
     "typescript-eslint": "^8.20.0",
-    "vite": "^6.0.7"
+    "vite": "^6.0.7",
+    "vitest": "^3.0.5"
   },
   "overrides": {
     "cookie": "^0.7.2"
+  },
+  "dependencies": {
+    "@codemirror/autocomplete": "^6.20.2",
+    "@codemirror/commands": "^6.10.3",
+    "@codemirror/lang-json": "^6.0.2",
+    "@codemirror/language": "^6.12.3",
+    "@codemirror/search": "^6.7.0",
+    "@codemirror/state": "^6.6.0",
+    "@codemirror/view": "^6.43.0",
+    "@lezer/highlight": "^1.2.3",
+    "codemirror": "^6.0.2"
   }
 }

dashboard/src/lib/CodeEditor.svelte

@@ -0,0 +1,107 @@
+<!--
+  CodeMirror-backed text editor for the dashboard.
+
+  Replaces our plain <textarea> with line numbers, syntax highlighting,
+  bracket matching, search/replace (Ctrl+F), and language-aware
+  autocomplete. Two-way bound via `value`; the parent treats it the
+  same as a textarea.
+
+  Languages: `rhai` (custom mode, ./rhai-mode.ts) and `json`
+  (@codemirror/lang-json).
+-->
+<script lang="ts">
+	import { onMount, onDestroy } from 'svelte';
+	import { basicSetup } from 'codemirror';
+	import { EditorView, keymap, placeholder as cmPlaceholder } from '@codemirror/view';
+	import { EditorState } from '@codemirror/state';
+	import { indentWithTab } from '@codemirror/commands';
+	import { json as jsonLang } from '@codemirror/lang-json';
+	import { rhai as rhaiLang } from './rhai-mode';
+	import { dashboardSyntaxHighlighting, dashboardTheme } from './editor-theme';
+
+	type Language = 'rhai' | 'json';
+
+	let {
+		value = $bindable(''),
+		language = 'rhai' as Language,
+		placeholder = '',
+		minHeight = '12rem'
+	}: {
+		value?: string;
+		language?: Language;
+		placeholder?: string;
+		minHeight?: string;
+	} = $props();
+
+	let host: HTMLDivElement | null = null;
+	let view: EditorView | null = null;
+	// Guard against the update-listener firing while we're pushing an
+	// external value into the editor — without this, parent-driven
+	// `value` changes would echo back through the listener and create a
+	// dispatch loop in Svelte 5 reactivity.
+	let pushingFromOutside = false;
+
+	function buildExtensions(lang: Language) {
+		const extensions = [
+			basicSetup,
+			lang === 'json' ? jsonLang() : rhaiLang(),
+			keymap.of([indentWithTab]),
+			dashboardSyntaxHighlighting,
+			dashboardTheme,
+			EditorView.updateListener.of((update) => {
+				if (update.docChanged && !pushingFromOutside) {
+					value = update.state.doc.toString();
+				}
+			})
+		];
+		if (placeholder) extensions.push(cmPlaceholder(placeholder));
+		return extensions;
+	}
+
+	onMount(() => {
+		if (!host) return;
+		view = new EditorView({
+			state: EditorState.create({
+				doc: value,
+				extensions: buildExtensions(language)
+			}),
+			parent: host
+		});
+	});
+
+	onDestroy(() => {
+		view?.destroy();
+		view = null;
+	});
+
+	// Push parent-driven `value` updates back into the editor (e.g.
+	// when the script is reloaded after Save, or "Format JSON" rewrites
+	// the body). We only dispatch when the document genuinely differs
+	// from the current `value`.
+	$effect(() => {
+		if (!view) return;
+		const current = view.state.doc.toString();
+		if (current !== value) {
+			pushingFromOutside = true;
+			view.dispatch({
+				changes: { from: 0, to: current.length, insert: value }
+			});
+			pushingFromOutside = false;
+		}
+	});
+</script>
+
+<div bind:this={host} class="cm-host" style:min-height={minHeight}></div>
+
+<style>
+	.cm-host :global(.cm-editor) {
+		height: 100%;
+		border-radius: 0.375rem;
+		border: 1px solid #334155;
+		overflow: hidden;
+	}
+	.cm-host :global(.cm-scroller) {
+		font-family:
+			ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;
+	}
+</style>

dashboard/src/lib/api.ts

@@ -5,6 +5,11 @@
 // the same Caddy upstream so the "Test invoke" panel can hit it
 // without any cross-origin gymnastics.
 
+import { goto } from '$app/navigation';
+import { base } from '$app/paths';
+import { browser } from '$app/environment';
+import { clearSession, getToken, setSession, type AdminUser } from './auth';
+
 export interface ScriptSandbox {
 	max_operations?: number;
 	max_string_size?: number;
@@ -134,12 +139,26 @@ export class ApiError extends Error {
 }
 
 async function adminRequest<T>(path: string, init?: RequestInit): Promise<T> {
-	const res = await fetch(path, {
-		...init,
-		headers: { 'content-type': 'application/json', ...(init?.headers ?? {}) }
-	});
+	const headers: Record<string, string> = {
+		'content-type': 'application/json',
+		...((init?.headers as Record<string, string>) ?? {})
+	};
+	const tok = getToken();
+	if (tok && !headers['authorization']) {
+		headers['authorization'] = `Bearer ${tok}`;
+	}
+	const res = await fetch(path, { ...init, headers });
 	const text = await res.text();
 	const parsed: unknown = text ? safeJson(text) : null;
+	if (res.status === 401) {
+		// Token gone stale or never present. Drop any cached session
+		// and bounce to login — unless we're already on it, in which
+		// case throw and let the login form render the error.
+		clearSession();
+		if (browser && !window.location.pathname.endsWith('/login')) {
+			void goto(`${base}/login`);
+		}
+	}
 	if (!res.ok) {
 		const message =
 			(parsed && typeof parsed === 'object' && 'error' in parsed
@@ -158,11 +177,76 @@ function safeJson(text: string): unknown {
 	}
 }
 
+export interface AdminUserRecord {
+	id: string;
+	username: string;
+	is_active: boolean;
+	created_at: string;
+	last_login_at: string | null;
+}
+
+export interface CreateAdminInput {
+	username: string;
+	password: string;
+}
+
+export interface PatchAdminInput {
+	username?: string;
+	password?: string;
+	is_active?: boolean;
+}
+
+interface LoginResponse {
+	user: AdminUser;
+	token: string;
+	expires_at: string;
+}
+
 export const api = {
 	health: () => fetch('/healthz').then((r) => r.text()),
 
 	version: () => adminRequest<VersionInfo>('/version'),
 
+	auth: {
+		login: async (username: string, password: string): Promise<AdminUser> => {
+			const r = await adminRequest<LoginResponse>('/api/v1/admin/auth/login', {
+				method: 'POST',
+				body: JSON.stringify({ username, password })
+			});
+			setSession(r.user, r.token);
+			return r.user;
+		},
+		logout: async (): Promise<void> => {
+			try {
+				await adminRequest<null>('/api/v1/admin/auth/logout', { method: 'POST' });
+			} finally {
+				// Always clear locally — logout is idempotent server-side
+				// and we don't want a network blip to strand the SPA in
+				// a "logged out on server, still logged in client-side"
+				// state.
+				clearSession();
+			}
+		},
+		me: () => adminRequest<AdminUser>('/api/v1/admin/auth/me')
+	},
+
+	admins: {
+		list: () => adminRequest<AdminUserRecord[]>('/api/v1/admin/admins'),
+		get: (id: string) => adminRequest<AdminUserRecord>(`/api/v1/admin/admins/${id}`),
+		create: (input: CreateAdminInput) =>
+			adminRequest<AdminUserRecord>('/api/v1/admin/admins', {
+				method: 'POST',
+				body: JSON.stringify(input)
+			}),
+		update: (id: string, input: PatchAdminInput) =>
+			adminRequest<AdminUserRecord>(`/api/v1/admin/admins/${id}`, {
+				method: 'PATCH',
+				body: JSON.stringify(input)
+			}),
+		remove: (id: string) =>
+			adminRequest<null>(`/api/v1/admin/admins/${id}`, { method: 'DELETE' })
+	},
+
 	routes: {
 		listForScript: (scriptId: string) =>
 			adminRequest<Route[]>(`/api/v1/admin/scripts/${scriptId}/routes`),

dashboard/src/lib/auth.ts

@@ -0,0 +1,60 @@
+// Session state for the dashboard. Backed by a pair of Svelte stores
+// plus a tiny localStorage echo so a page reload doesn't sign you out.
+//
+// The bearer token doubles as the cookie value on the server side, so
+// in browsers that honor the Set-Cookie response the cookie path "just
+// works"; the token-in-localStorage path covers the rest (HTTP dev, API
+// clients impersonating the dashboard) by being injected into the
+// Authorization header in api.ts.
+
+import { writable, get } from 'svelte/store';
+import { browser } from '$app/environment';
+
+export interface AdminUser {
+	id: string;
+	username: string;
+}
+
+const TOKEN_KEY = 'picloud.admin.token';
+
+function readStoredToken(): string | null {
+	if (!browser) return null;
+	try {
+		return localStorage.getItem(TOKEN_KEY);
+	} catch {
+		return null;
+	}
+}
+
+function writeStoredToken(value: string | null) {
+	if (!browser) return;
+	try {
+		if (value === null) localStorage.removeItem(TOKEN_KEY);
+		else localStorage.setItem(TOKEN_KEY, value);
+	} catch {
+		// Non-fatal: localStorage can be disabled. The session will
+		// just not survive page reloads, but the in-memory store still
+		// works for the current SPA lifetime.
+	}
+}
+
+export const token = writable<string | null>(readStoredToken());
+export const currentUser = writable<AdminUser | null>(null);
+
+token.subscribe((value) => writeStoredToken(value));
+
+/** Snapshot of the current token without subscribing — used by the
+ * fetch wrapper. Returns null when no admin is logged in. */
+export function getToken(): string | null {
+	return get(token);
+}
+
+export function setSession(user: AdminUser, raw_token: string) {
+	currentUser.set(user);
+	token.set(raw_token);
+}
+
+export function clearSession() {
+	currentUser.set(null);
+	token.set(null);
+}

dashboard/src/lib/editor-theme.ts

@@ -0,0 +1,159 @@
+// Dashboard-matching theme + highlight style for CodeMirror.
+//
+// Colors are pulled from the existing slate/sky palette used across
+// the dashboard (#0f172a / #1e293b / #38bdf8) so the editor blends
+// into the surrounding cards instead of looking like a third-party
+// transplant. Stock dark themes like "One Dark" or "VS Code Dark"
+// would each clash with the slate background by a few shades.
+
+import { EditorView } from '@codemirror/view';
+import { HighlightStyle, syntaxHighlighting } from '@codemirror/language';
+import { tags as t } from '@lezer/highlight';
+
+const palette = {
+	bg: '#0b1220', // matches existing <input>/<textarea> backgrounds
+	bgGutter: '#0f172a',
+	border: '#334155',
+	text: '#e2e8f0',
+	textMuted: '#94a3b8',
+	cursor: '#38bdf8',
+	// Selection alpha was originally 30 (≈19%) — bumped to 55 (≈33%)
+	// so it stays clearly visible when it sits on top of (or under, in
+	// CodeMirror's case) the active-line tint. The default CM layering
+	// puts the selection layer behind line backgrounds, so an opaque
+	// active line hides selections on the current line; this pair of
+	// values makes both visible at once.
+	selection: '#38bdf855',
+	// Active line: very subtle sky tint at ~6% alpha. Strong enough to
+	// see at a glance which line the caret is on, weak enough to leave
+	// the selection visible underneath. The active-line gutter (the
+	// brighter line number on the left) is the primary indicator.
+	activeLine: '#38bdf810',
+	activeLineGutter: '#1e293b',
+	matchingBracket: '#38bdf850',
+	searchMatch: '#38bdf850',
+	searchMatchSelected: '#38bdf8',
+
+	// Syntax — chosen to be readable against #0b1220 without making
+	// any single token feel louder than the rest.
+	comment: '#64748b',
+	str: '#86efac',
+	num: '#fbbf24',
+	bool: '#fbbf24',
+	keyword: '#c4b5fd',
+	control: '#c4b5fd',
+	operator: '#cbd5e1',
+	punct: '#cbd5e1',
+	function: '#38bdf8',
+	property: '#e2e8f0',
+	variable: '#e2e8f0',
+	ctx: '#f472b6', // `ctx` is special — pinker so users notice it
+	namespace: '#fbbf24', // `log::`
+	invalid: '#ef4444'
+};
+
+export const dashboardTheme = EditorView.theme(
+	{
+		'&': {
+			color: palette.text,
+			backgroundColor: palette.bg,
+			borderRadius: '0.375rem'
+		},
+		'&.cm-focused': {
+			outline: `1px solid ${palette.cursor}`
+		},
+		'.cm-content': {
+			caretColor: palette.cursor,
+			fontFamily:
+				'ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace',
+			fontSize: '0.85rem',
+			padding: '0.5rem 0'
+		},
+		'.cm-cursor, .cm-dropCursor': {
+			borderLeftColor: palette.cursor,
+			borderLeftWidth: '2px'
+		},
+		'&.cm-focused .cm-selectionBackground, .cm-selectionBackground, .cm-content ::selection':
+			{
+				backgroundColor: palette.selection
+			},
+		'.cm-activeLine': {
+			backgroundColor: palette.activeLine
+		},
+		'.cm-gutters': {
+			backgroundColor: palette.bgGutter,
+			color: palette.textMuted,
+			border: 'none',
+			borderRight: `1px solid ${palette.border}`
+		},
+		'.cm-activeLineGutter': {
+			backgroundColor: palette.activeLineGutter,
+			color: palette.text
+		},
+		'.cm-matchingBracket, .cm-nonmatchingBracket': {
+			backgroundColor: palette.matchingBracket,
+			outline: 'none'
+		},
+		// Search / replace panel (Ctrl+F)
+		'.cm-panels': {
+			backgroundColor: palette.bgGutter,
+			color: palette.text,
+			borderTop: `1px solid ${palette.border}`
+		},
+		'.cm-searchMatch': {
+			backgroundColor: palette.searchMatch
+		},
+		'.cm-searchMatch.cm-searchMatch-selected': {
+			backgroundColor: palette.searchMatchSelected
+		},
+		'.cm-panel input, .cm-panel button': {
+			backgroundColor: palette.bg,
+			color: palette.text,
+			border: `1px solid ${palette.border}`,
+			borderRadius: '0.25rem',
+			padding: '0.2rem 0.4rem'
+		},
+		'.cm-panel button:hover': {
+			backgroundColor: palette.activeLine
+		},
+		// Autocomplete popup
+		'.cm-tooltip': {
+			backgroundColor: palette.bgGutter,
+			border: `1px solid ${palette.border}`,
+			color: palette.text
+		},
+		'.cm-tooltip.cm-tooltip-autocomplete > ul > li[aria-selected]': {
+			backgroundColor: palette.activeLine,
+			color: palette.text
+		},
+		'.cm-completionLabel': {
+			color: palette.text
+		},
+		'.cm-completionDetail': {
+			color: palette.textMuted,
+			fontStyle: 'normal'
+		},
+		'.cm-completionIcon': {
+			color: palette.textMuted
+		}
+	},
+	{ dark: true }
+);
+
+export const dashboardHighlight = HighlightStyle.define([
+	{ tag: t.comment, color: palette.comment, fontStyle: 'italic' },
+	{ tag: [t.string, t.special(t.string)], color: palette.str },
+	{ tag: [t.number, t.bool, t.null], color: palette.num },
+	{ tag: [t.keyword, t.modifier], color: palette.keyword, fontWeight: '600' },
+	{ tag: t.controlKeyword, color: palette.control, fontWeight: '600' },
+	{ tag: [t.operator, t.derefOperator, t.logicOperator], color: palette.operator },
+	{ tag: [t.punctuation, t.bracket, t.brace, t.paren, t.squareBracket], color: palette.punct },
+	{ tag: [t.function(t.variableName), t.function(t.propertyName)], color: palette.function },
+	{ tag: [t.propertyName, t.attributeName], color: palette.property },
+	{ tag: t.variableName, color: palette.variable },
+	{ tag: t.special(t.variableName), color: palette.ctx, fontWeight: '600' },
+	{ tag: t.namespace, color: palette.namespace, fontWeight: '600' },
+	{ tag: t.invalid, color: palette.invalid, textDecoration: 'underline wavy' }
+]);
+
+export const dashboardSyntaxHighlighting = syntaxHighlighting(dashboardHighlight);

dashboard/src/lib/rhai-mode.ts

@@ -0,0 +1,600 @@
+// CodeMirror StreamLanguage for Rhai.
+//
+// Keyword and operator lists are sourced from the upstream TextMate
+// grammar maintained by the Rhai authors:
+//   https://github.com/rhaiscript/vscode-rhai
+//   syntax/rhai.tmLanguage.json (MPL-2.0)
+// This file does NOT copy the upstream grammar bytes — only the
+// symbol lists. The matching logic is a simple regex tokenizer
+// tailored to CodeMirror's StreamLanguage shape; if richer
+// highlighting is wanted later, swap this out for a full tmLanguage
+// loader (vscode-textmate + oniguruma) without touching callers.
+//
+// SDK completions (`ctx.*`, `log::*`) come from our own SDK contract
+// in crates/executor-core/tests/sdk_contract.rs — that file is the
+// authoritative list of what scripts can do.
+
+import { StreamLanguage, LanguageSupport } from '@codemirror/language';
+import { autocompletion, type CompletionContext, type CompletionResult } from '@codemirror/autocomplete';
+import { EditorSelection, StateEffect, StateField, type Extension } from '@codemirror/state';
+import { EditorView, keymap, showPanel, type Panel } from '@codemirror/view';
+import { parse, buildSymbolTable, type ParseResult, type Range, type SymbolTable } from './rhai';
+
+// Keywords that drive control flow (`if`, `for`, ...) — these get the
+// `controlKeyword` tag so the theme can color them distinctly from
+// declaration-style keywords like `let` or `fn`.
+const CONTROL_KEYWORDS = new Set([
+	'if',
+	'else',
+	'for',
+	'while',
+	'loop',
+	'do',
+	'switch',
+	'case',
+	'default',
+	'return',
+	'break',
+	'continue',
+	'try',
+	'catch',
+	'throw'
+]);
+
+const DECLARATION_KEYWORDS = new Set([
+	'let',
+	'const',
+	'fn',
+	'private',
+	'in',
+	'as',
+	'is'
+]);
+
+// Reserved-but-not-currently-valid keywords from the upstream grammar.
+// We still highlight them so users notice them; the parser will reject
+// at execute time.
+const RESERVED_KEYWORDS = new Set([
+	'var',
+	'match',
+	'public',
+	'protected',
+	'new',
+	'use',
+	'with',
+	'module',
+	'package',
+	'super',
+	'spawn',
+	'thread',
+	'go',
+	'sync',
+	'async',
+	'await',
+	'yield',
+	'void',
+	'null',
+	'nil',
+	'debug',
+	'eval',
+	'print',
+	'import',
+	'export'
+]);
+
+const BOOLEAN_LITERALS = new Set(['true', 'false']);
+
+const SPECIAL_VARIABLES = new Set(['ctx']);
+const NAMESPACES = new Set(['log']);
+
+interface RhaiState {
+	inBlockComment: boolean;
+	inString: false | '"' | '`';
+}
+
+export const rhaiLanguage = StreamLanguage.define<RhaiState>({
+	name: 'rhai',
+	startState: () => ({ inBlockComment: false, inString: false }),
+	token(stream, state) {
+		// --- inside a /* … */ block comment ---
+		if (state.inBlockComment) {
+			if (stream.match(/.*?\*\//)) {
+				state.inBlockComment = false;
+			} else {
+				stream.skipToEnd();
+			}
+			return 'comment';
+		}
+
+		// --- inside a multi-line string (rare but possible with ` ` strings) ---
+		if (state.inString) {
+			const quote = state.inString;
+			while (!stream.eol()) {
+				const ch = stream.next();
+				if (ch === '\\') {
+					stream.next();
+					continue;
+				}
+				if (ch === quote) {
+					state.inString = false;
+					return 'string';
+				}
+			}
+			return 'string';
+		}
+
+		// Skip whitespace
+		if (stream.eatSpace()) return null;
+
+		// --- line comment ---
+		if (stream.match('//')) {
+			stream.skipToEnd();
+			return 'comment';
+		}
+		// --- block comment ---
+		if (stream.match('/*')) {
+			state.inBlockComment = true;
+			if (stream.match(/.*?\*\//)) {
+				state.inBlockComment = false;
+			} else {
+				stream.skipToEnd();
+			}
+			return 'comment';
+		}
+
+		// --- strings ---
+		const quote = stream.peek();
+		if (quote === '"' || quote === '`') {
+			stream.next();
+			while (!stream.eol()) {
+				const ch = stream.next();
+				if (ch === '\\') {
+					stream.next();
+					continue;
+				}
+				if (ch === quote) {
+					return 'string';
+				}
+			}
+			// String continues on next line (only really valid for ` `).
+			state.inString = quote;
+			return 'string';
+		}
+
+		// --- numbers (hex, binary, decimal, float) ---
+		if (stream.match(/^0x[0-9a-fA-F_]+/)) return 'number';
+		if (stream.match(/^0b[01_]+/)) return 'number';
+		if (stream.match(/^\d[\d_]*(?:\.\d[\d_]*)?(?:[eE][+-]?\d+)?/)) return 'number';
+
+		// --- module path: name::name (used for log::info etc.) ---
+		// Recognized before plain identifiers so we can return 'namespace'.
+		if (stream.match(/^[a-zA-Z_]\w*(?=::)/)) {
+			const word = stream.current();
+			if (NAMESPACES.has(word)) return 'namespace';
+			return 'variableName';
+		}
+
+		// --- identifiers + keywords ---
+		if (stream.match(/^[a-zA-Z_]\w*/)) {
+			const word = stream.current();
+			if (CONTROL_KEYWORDS.has(word)) return 'controlKeyword';
+			if (DECLARATION_KEYWORDS.has(word)) return 'keyword';
+			if (RESERVED_KEYWORDS.has(word)) return 'keyword';
+			if (BOOLEAN_LITERALS.has(word)) return 'bool';
+			if (SPECIAL_VARIABLES.has(word)) return 'variableName.special';
+			if (NAMESPACES.has(word)) return 'namespace';
+			// Followed by `(` → function call. We highlight as a function name.
+			if (stream.peek() === '(') return 'function(variableName)';
+			// Property after `.`
+			const before = stream.string.slice(0, stream.start);
+			if (before.endsWith('.')) return 'propertyName';
+			return 'variableName';
+		}
+
+		// --- operators / punctuation ---
+		if (stream.match(/^(\?\?|\.\.=|\.\.|::|==|!=|<=|>=|&&|\|\||<<|>>|=>|->|[+\-*/%<>!&|^~=])/)) {
+			return 'operator';
+		}
+		if (stream.match(/^[(){}[\];,.]/)) return 'punctuation';
+
+		// Unrecognized — advance one char and bail.
+		stream.next();
+		return null;
+	},
+	languageData: {
+		commentTokens: { line: '//', block: { open: '/*', close: '*/' } },
+		closeBrackets: { brackets: ['(', '[', '{', '"', '`'] },
+		indentOnInput: /^\s*[}\])]$/
+	}
+});
+
+// ---------------------------------------------------------------------------
+// Autocomplete
+// ---------------------------------------------------------------------------
+
+interface CompletionItem {
+	label: string;
+	detail?: string;
+	type?: 'keyword' | 'variable' | 'function' | 'property' | 'namespace';
+}
+
+const KEYWORD_COMPLETIONS: CompletionItem[] = [
+	...['let', 'const', 'fn'].map((k) => ({ label: k, type: 'keyword' as const, detail: 'declaration' })),
+	...['if', 'else', 'for', 'while', 'loop', 'switch', 'return', 'break', 'continue', 'try', 'catch', 'throw'].map(
+		(k) => ({ label: k, type: 'keyword' as const, detail: 'control flow' })
+	),
+	...['in', 'as', 'is'].map((k) => ({ label: k, type: 'keyword' as const })),
+	{ label: 'true', type: 'keyword', detail: 'boolean' },
+	{ label: 'false', type: 'keyword', detail: 'boolean' }
+];
+
+// ctx.* — keep aligned with `build_ctx_map` in
+// crates/executor-core/src/engine.rs.
+const CTX_TOP_COMPLETIONS: CompletionItem[] = [
+	{ label: 'execution_id', type: 'property', detail: 'string' },
+	{ label: 'script_id', type: 'property', detail: 'string' },
+	{ label: 'script_name', type: 'property', detail: 'string' },
+	{ label: 'request_id', type: 'property', detail: 'string' },
+	{ label: 'invocation_type', type: 'property', detail: '"http" | "function" | "scheduled"' },
+	{ label: 'sdk_version', type: 'property', detail: 'string ("major.minor")' },
+	{ label: 'request', type: 'property', detail: 'object' }
+];
+
+const CTX_REQUEST_COMPLETIONS: CompletionItem[] = [
+	{ label: 'path', type: 'property', detail: 'string' },
+	{ label: 'headers', type: 'property', detail: 'map of string→string' },
+	{ label: 'body', type: 'property', detail: 'parsed JSON value' },
+	{ label: 'params', type: 'property', detail: 'map (param-route captures, SDK 1.1+)' },
+	{ label: 'query', type: 'property', detail: 'map (parsed query string, SDK 1.1+)' },
+	{ label: 'rest', type: 'property', detail: 'string (prefix-route tail, SDK 1.1+)' }
+];
+
+const LOG_COMPLETIONS: CompletionItem[] = [
+	{ label: 'info', type: 'function', detail: 'log::info(msg, data?)' },
+	{ label: 'warn', type: 'function', detail: 'log::warn(msg, data?)' },
+	{ label: 'error', type: 'function', detail: 'log::error(msg, data?)' },
+	{ label: 'trace', type: 'function', detail: 'log::trace(msg, data?) — use instead of "debug" (reserved keyword)' }
+];
+
+const TOP_LEVEL_GLOBALS: CompletionItem[] = [
+	{ label: 'ctx', type: 'variable', detail: 'invocation context' },
+	{ label: 'log', type: 'namespace', detail: 'log::info/warn/error/trace' }
+];
+
+function toCMCompletions(items: CompletionItem[]) {
+	return items.map((c) => ({
+		label: c.label,
+		type: c.type,
+		detail: c.detail
+	}));
+}
+
+export function rhaiCompletions(context: CompletionContext): CompletionResult | null {
+	// `log::` namespace
+	const ns = context.matchBefore(/log::\w*/);
+	if (ns) {
+		return {
+			from: ns.from + 'log::'.length,
+			options: toCMCompletions(LOG_COMPLETIONS),
+			validFor: /^\w*$/
+		};
+	}
+
+	// `ctx.request.` properties
+	const ctxReq = context.matchBefore(/ctx\.request\.\w*/);
+	if (ctxReq) {
+		return {
+			from: ctxReq.from + 'ctx.request.'.length,
+			options: toCMCompletions(CTX_REQUEST_COMPLETIONS),
+			validFor: /^\w*$/
+		};
+	}
+
+	// `ctx.` properties
+	const ctx = context.matchBefore(/ctx\.\w*/);
+	if (ctx) {
+		return {
+			from: ctx.from + 'ctx.'.length,
+			options: toCMCompletions(CTX_TOP_COMPLETIONS),
+			validFor: /^\w*$/
+		};
+	}
+
+	// Member access on something other than `ctx`/`log` — let the
+	// script-aware source decide whether it has fields to offer. We bow
+	// out so we don't flood the popup with keywords after a `.`.
+	if (context.matchBefore(/\.\w*$/)) return null;
+
+	// Plain word at the cursor → keywords + top-level names.
+	const word = context.matchBefore(/\w+/);
+	if (!word && !context.explicit) return null;
+	return {
+		from: word ? word.from : context.pos,
+		options: toCMCompletions([...KEYWORD_COMPLETIONS, ...TOP_LEVEL_GLOBALS]),
+		validFor: /^\w*$/
+	};
+}
+
+// ---------------------------------------------------------------------------
+// Script-aware analysis
+// ---------------------------------------------------------------------------
+
+// One AST + symbol table per editor state. Rebuilt on every doc change.
+// Scripts in the dashboard are small (20–200 lines is the target); the
+// parse + walk is sub-millisecond at that size, so we don't bother
+// debouncing for now.
+interface RhaiAnalysis {
+	parse: ParseResult;
+	table: SymbolTable;
+}
+
+function analyze(source: string): RhaiAnalysis {
+	const parsed = parse(source);
+	return { parse: parsed, table: buildSymbolTable(parsed) };
+}
+
+export const rhaiAnalysisField = StateField.define<RhaiAnalysis>({
+	create: (state) => analyze(state.doc.toString()),
+	update: (value, tr) => (tr.docChanged ? analyze(tr.newDoc.toString()) : value)
+});
+
+/**
+ * Script-aware completion source.
+ *
+ * Two things on top of the static `ctx.*` / `log::*` list:
+ *   1. After `name.`, if `name` was initialized to an object-map
+ *      literal, suggest that literal's field names.
+ *   2. At a plain word position, suggest user-defined symbols in scope
+ *      (locals, function parameters, top-level `fn` decls). `fn` decls
+ *      get their signature in the `detail` field so the popup shows
+ *      `process(order, user)` rather than just `process`.
+ *
+ * Composes with `rhaiCompletions` via `autocompletion({ override:
+ * [scopeCompletionSource, rhaiCompletions] })` — CodeMirror merges the
+ * results.
+ */
+export function scopeCompletionSource(context: CompletionContext): CompletionResult | null {
+	const analysis = context.state.field(rhaiAnalysisField, false);
+	if (!analysis) return null;
+
+	// Member access — `obj.fie|`. Only fire if `obj` resolves to a known
+	// object-literal in scope; otherwise leave the popup empty rather
+	// than guess wrong fields.
+	const member = context.matchBefore(/(\w+)\.(\w*)/);
+	if (member) {
+		const dotIdx = member.text.indexOf('.');
+		const objectName = member.text.slice(0, dotIdx);
+		// `ctx.*` is handled by the static source — don't double up.
+		if (objectName !== 'ctx') {
+			const fields = analysis.table.objectFieldsOf(objectName, member.from);
+			if (fields.length > 0) {
+				return {
+					from: member.from + dotIdx + 1,
+					options: fields.map((label) => ({ label, type: 'property' })),
+					validFor: /^\w*$/
+				};
+			}
+		}
+		return null;
+	}
+
+	// Skip when right after `::` (handled by the static source for log::).
+	if (context.matchBefore(/::\w*$/)) return null;
+
+	// Plain word — surface in-scope decls.
+	const word = context.matchBefore(/\w+/);
+	if (!word && !context.explicit) return null;
+	const decls = analysis.table.scopeCompletions(context.pos);
+	if (decls.length === 0) return null;
+	return {
+		from: word ? word.from : context.pos,
+		options: decls.map((d) => ({
+			label: d.name,
+			type: d.kind === 'fn' ? 'function' : 'variable',
+			detail: d.signature ?? d.kind
+		})),
+		validFor: /^\w*$/
+	};
+}
+
+// ---------------------------------------------------------------------------
+// Go-to-definition, Ctrl/Cmd+Click, find-usages
+// ---------------------------------------------------------------------------
+
+interface UsagesPanelState {
+	name: string;
+	ranges: Range[];
+}
+
+const setUsagesPanel = StateEffect.define<UsagesPanelState | null>();
+
+const usagesPanelField = StateField.define<UsagesPanelState | null>({
+	create: () => null,
+	update(value, tr) {
+		for (const e of tr.effects) if (e.is(setUsagesPanel)) return e.value;
+		return value;
+	},
+	provide: (f) => showPanel.from(f, (value) => (value ? buildUsagesPanel : null))
+});
+
+function buildUsagesPanel(view: EditorView): Panel {
+	const state = view.state.field(usagesPanelField);
+	const dom = document.createElement('div');
+	dom.className = 'cm-rhai-usages';
+
+	const head = document.createElement('div');
+	head.className = 'cm-rhai-usages-head';
+	const count = state ? state.ranges.length : 0;
+	const label = document.createElement('span');
+	label.textContent = `${count} occurrence${count === 1 ? '' : 's'} of "${state?.name ?? ''}"`;
+	head.appendChild(label);
+	const close = document.createElement('button');
+	close.type = 'button';
+	close.textContent = '×';
+	close.title = 'Close (Esc)';
+	close.onclick = () => {
+		view.dispatch({ effects: setUsagesPanel.of(null) });
+		view.focus();
+	};
+	head.appendChild(close);
+	dom.appendChild(head);
+
+	if (state) {
+		for (const r of state.ranges) {
+			const line = view.state.doc.lineAt(r.start);
+			const row = document.createElement('button');
+			row.type = 'button';
+			row.className = 'cm-rhai-usages-row';
+			const num = document.createElement('span');
+			num.className = 'cm-rhai-usages-line';
+			num.textContent = String(line.number);
+			const snip = document.createElement('span');
+			snip.className = 'cm-rhai-usages-snip';
+			snip.textContent = line.text.trim();
+			row.appendChild(num);
+			row.appendChild(snip);
+			row.onclick = () => {
+				view.dispatch({
+					selection: EditorSelection.cursor(r.start),
+					scrollIntoView: true
+				});
+				view.focus();
+			};
+			dom.appendChild(row);
+		}
+	}
+
+	return { dom, top: false };
+}
+
+const usagesPanelTheme = EditorView.baseTheme({
+	'.cm-rhai-usages': {
+		background: '#0f172a',
+		color: '#e2e8f0',
+		borderTop: '1px solid #334155',
+		padding: '0.4rem 0.5rem',
+		maxHeight: '180px',
+		overflowY: 'auto',
+		fontSize: '0.85rem'
+	},
+	'.cm-rhai-usages-head': {
+		display: 'flex',
+		justifyContent: 'space-between',
+		alignItems: 'center',
+		color: '#94a3b8',
+		marginBottom: '0.25rem'
+	},
+	'.cm-rhai-usages-head button': {
+		background: 'transparent',
+		color: '#94a3b8',
+		border: 'none',
+		fontSize: '1rem',
+		cursor: 'pointer',
+		padding: '0 0.4rem'
+	},
+	'.cm-rhai-usages-row': {
+		display: 'flex',
+		gap: '0.5rem',
+		alignItems: 'baseline',
+		width: '100%',
+		background: 'transparent',
+		color: '#e2e8f0',
+		border: 'none',
+		textAlign: 'left',
+		padding: '0.15rem 0.25rem',
+		cursor: 'pointer',
+		fontFamily: 'inherit',
+		fontSize: 'inherit',
+		borderRadius: '0.25rem'
+	},
+	'.cm-rhai-usages-row:hover': {
+		background: '#1e293b'
+	},
+	'.cm-rhai-usages-line': {
+		color: '#64748b',
+		minWidth: '2.5rem',
+		flexShrink: 0
+	},
+	'.cm-rhai-usages-snip': {
+		fontFamily:
+			'ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace',
+		whiteSpace: 'nowrap',
+		overflow: 'hidden',
+		textOverflow: 'ellipsis'
+	}
+});
+
+function declAtCursor(view: EditorView, pos: number) {
+	const analysis = view.state.field(rhaiAnalysisField, false);
+	if (!analysis) return null;
+	return analysis.table.declOfUsageAt(pos);
+}
+
+export function gotoDefinition(view: EditorView): boolean {
+	const pos = view.state.selection.main.head;
+	const decl = declAtCursor(view, pos);
+	if (!decl) return false;
+	view.dispatch({
+		selection: EditorSelection.cursor(decl.nameRange.start),
+		scrollIntoView: true
+	});
+	return true;
+}
+
+export function findUsages(view: EditorView): boolean {
+	const pos = view.state.selection.main.head;
+	const analysis = view.state.field(rhaiAnalysisField, false);
+	if (!analysis) return false;
+	const decl = analysis.table.declOfUsageAt(pos);
+	if (!decl) return false;
+	view.dispatch({
+		effects: setUsagesPanel.of({
+			name: decl.name,
+			ranges: analysis.table.usagesOf(decl)
+		})
+	});
+	return true;
+}
+
+function closeUsagesPanel(view: EditorView): boolean {
+	if (!view.state.field(usagesPanelField, false)) return false;
+	view.dispatch({ effects: setUsagesPanel.of(null) });
+	return true;
+}
+
+const rhaiKeymap = keymap.of([
+	{ key: 'F12', run: gotoDefinition },
+	{ key: 'Shift-F12', run: findUsages },
+	{ key: 'Escape', run: closeUsagesPanel }
+]);
+
+// Ctrl+Click (Cmd+Click on macOS) on an identifier → jump to its decl.
+// Returning `true` suppresses CodeMirror's default selection behavior so
+// the click doesn't simultaneously place the caret at the click site.
+const ctrlClickHandler = EditorView.domEventHandlers({
+	mousedown(event, view) {
+		if (!(event.metaKey || event.ctrlKey) || event.button !== 0) return false;
+		const pos = view.posAtCoords({ x: event.clientX, y: event.clientY });
+		if (pos == null) return false;
+		const decl = declAtCursor(view, pos);
+		if (!decl) return false;
+		view.dispatch({
+			selection: EditorSelection.cursor(decl.nameRange.start),
+			scrollIntoView: true
+		});
+		event.preventDefault();
+		return true;
+	}
+});
+
+export function rhai(): LanguageSupport {
+	const extensions: Extension[] = [
+		rhaiAnalysisField,
+		usagesPanelField,
+		usagesPanelTheme,
+		rhaiKeymap,
+		ctrlClickHandler,
+		autocompletion({ override: [scopeCompletionSource, rhaiCompletions] })
+	];
+	return new LanguageSupport(rhaiLanguage, extensions);
+}

dashboard/src/lib/rhai/ast.ts

@@ -0,0 +1,279 @@
+// AST node definitions for the dashboard's hand-rolled Rhai parser.
+//
+// Every node carries `start` / `end` byte offsets into the source so the
+// editor features (autocomplete, goto-def, find-usages, format) can map
+// between positions in the document and nodes in the tree.
+//
+// The shape mirrors the Rhai book grammar (https://rhai.rs/book/language/)
+// but simplified: type annotations are absent (Rhai is dynamic), and
+// statement-vs-expression duality is collapsed by letting `if` / `switch` /
+// block expressions appear in both positions (an `ExprStmt` wrapper turns
+// any expression into a statement).
+
+export interface Range {
+	start: number;
+	end: number;
+}
+
+// ---------------------------------------------------------------------------
+// Comments — captured by the lexer with their positions and re-emitted by
+// the formatter. Kept off the AST tree so they don't clutter walkers.
+// ---------------------------------------------------------------------------
+
+export interface Comment extends Range {
+	kind: 'LineComment' | 'BlockComment';
+	text: string;
+}
+
+// ---------------------------------------------------------------------------
+// Statements
+// ---------------------------------------------------------------------------
+
+export type Stmt =
+	| LetStmt
+	| ConstStmt
+	| FnDecl
+	| ExprStmt
+	| ReturnStmt
+	| WhileStmt
+	| LoopStmt
+	| ForStmt
+	| BreakStmt
+	| ContinueStmt
+	| TryStmt;
+
+export interface LetStmt extends Range {
+	kind: 'Let';
+	name: string;
+	nameRange: Range;
+	init: Expr | null;
+}
+
+export interface ConstStmt extends Range {
+	kind: 'Const';
+	name: string;
+	nameRange: Range;
+	init: Expr | null;
+}
+
+export interface Param extends Range {
+	name: string;
+}
+
+export interface FnDecl extends Range {
+	kind: 'FnDecl';
+	name: string;
+	nameRange: Range;
+	params: Param[];
+	body: BlockExpr;
+}
+
+export interface ExprStmt extends Range {
+	kind: 'ExprStmt';
+	expr: Expr;
+	// Whether the statement is terminated with `;`. Block-form expressions
+	// (`if`/`switch`/`{...}`) don't require it; everything else does.
+	semi: boolean;
+}
+
+export interface ReturnStmt extends Range {
+	kind: 'Return';
+	value: Expr | null;
+}
+
+export interface WhileStmt extends Range {
+	kind: 'While';
+	cond: Expr;
+	body: BlockExpr;
+}
+
+export interface LoopStmt extends Range {
+	kind: 'Loop';
+	body: BlockExpr;
+}
+
+export interface ForStmt extends Range {
+	kind: 'For';
+	varName: string;
+	varRange: Range;
+	iter: Expr;
+	body: BlockExpr;
+}
+
+export interface BreakStmt extends Range {
+	kind: 'Break';
+}
+
+export interface ContinueStmt extends Range {
+	kind: 'Continue';
+}
+
+export interface TryStmt extends Range {
+	kind: 'Try';
+	body: BlockExpr;
+	catchVar: string | null;
+	catchVarRange: Range | null;
+	handler: BlockExpr;
+}
+
+// ---------------------------------------------------------------------------
+// Expressions
+// ---------------------------------------------------------------------------
+
+export type Expr =
+	| IdentExpr
+	| NumberExpr
+	| StringExpr
+	| BoolExpr
+	| NullExpr
+	| CallExpr
+	| MemberExpr
+	| IndexExpr
+	| UnaryExpr
+	| BinaryExpr
+	| AssignExpr
+	| ParenExpr
+	| ObjectMapExpr
+	| ArrayExpr
+	| FnExpr
+	| IfExpr
+	| SwitchExpr
+	| BlockExpr;
+
+export interface IdentExpr extends Range {
+	kind: 'Ident';
+	name: string;
+}
+
+export interface NumberExpr extends Range {
+	kind: 'Number';
+	raw: string;
+}
+
+export interface StringExpr extends Range {
+	kind: 'String';
+	// The surrounding quote — `"` is escape-processed, backtick is raw and
+	// may span multiple lines. We don't decode escapes; the formatter just
+	// preserves the raw text between the quotes.
+	quote: '"' | '`';
+	raw: string;
+}
+
+export interface BoolExpr extends Range {
+	kind: 'Bool';
+	value: boolean;
+}
+
+export interface NullExpr extends Range {
+	kind: 'Null';
+}
+
+export interface CallExpr extends Range {
+	kind: 'Call';
+	callee: Expr;
+	args: Expr[];
+}
+
+export interface MemberExpr extends Range {
+	kind: 'Member';
+	object: Expr;
+	property: string;
+	propertyRange: Range;
+}
+
+export interface IndexExpr extends Range {
+	kind: 'Index';
+	object: Expr;
+	index: Expr;
+}
+
+export interface UnaryExpr extends Range {
+	kind: 'Unary';
+	op: string;
+	operand: Expr;
+}
+
+export interface BinaryExpr extends Range {
+	kind: 'Binary';
+	op: string;
+	left: Expr;
+	right: Expr;
+}
+
+export interface AssignExpr extends Range {
+	kind: 'Assign';
+	op: string; // = += -= *= /= %= ??=
+	target: Expr;
+	value: Expr;
+}
+
+export interface ParenExpr extends Range {
+	kind: 'Paren';
+	expr: Expr;
+}
+
+export interface ObjectMapEntry extends Range {
+	key: string;
+	keyRange: Range;
+	value: Expr;
+}
+
+export interface ObjectMapExpr extends Range {
+	kind: 'ObjectMap';
+	entries: ObjectMapEntry[];
+}
+
+export interface ArrayExpr extends Range {
+	kind: 'Array';
+	elements: Expr[];
+}
+
+export interface FnExpr extends Range {
+	kind: 'FnExpr';
+	params: Param[];
+	body: BlockExpr;
+}
+
+export interface IfExpr extends Range {
+	kind: 'IfExpr';
+	cond: Expr;
+	then: BlockExpr;
+	// else branch: either a block or another `if` for `else if` chains.
+	else_: BlockExpr | IfExpr | null;
+}
+
+export interface SwitchArm extends Range {
+	pattern: Expr | null; // null = `_` default case
+	guard: Expr | null;
+	value: Expr;
+}
+
+export interface SwitchExpr extends Range {
+	kind: 'SwitchExpr';
+	subject: Expr;
+	arms: SwitchArm[];
+}
+
+export interface BlockExpr extends Range {
+	kind: 'BlockExpr';
+	stmts: Stmt[];
+}
+
+// ---------------------------------------------------------------------------
+// Top-level parse output
+// ---------------------------------------------------------------------------
+
+export interface ParseError extends Range {
+	message: string;
+}
+
+export interface ParseResult {
+	source: string;
+	program: BlockExpr;
+	errors: ParseError[];
+	comments: Comment[];
+	// Offsets at which the source contained a blank line (a whitespace
+	// run with two or more newlines). One entry per blank run; the
+	// formatter consults these to preserve user-intent vertical grouping.
+	blankLines: number[];
+}

dashboard/src/lib/rhai/format.test.ts

@@ -0,0 +1,153 @@
+import { describe, it, expect } from 'vitest';
+import { format } from './format';
+
+function formatted(src: string): string {
+	const r = format(src);
+	if (!r.ok) throw new Error(`expected format to succeed, got: ${r.error.message}`);
+	return r.text;
+}
+
+describe('format — basic shape', () => {
+	it('normalizes a simple let with operator spacing', () => {
+		const out = formatted('let   x=1+2 *  3;');
+		expect(out).toBe('let x = 1 + 2 * 3;\n');
+	});
+
+	it('renders a fn declaration with body', () => {
+		const out = formatted('fn  process(order,user){order.total}');
+		expect(out).toBe(
+			'fn process(order, user) {\n' +
+				'\torder.total\n' +
+				'}\n'
+		);
+	});
+
+	it('does not insert a blank between fn decls the user did not separate', () => {
+		// Strict preserve-only policy: no source blank => no emitted blank.
+		const out = formatted('fn a(){1}fn b(){2}');
+		expect(out).toBe('fn a() {\n\t1\n}\nfn b() {\n\t2\n}\n');
+	});
+
+	it('renders if / else if / else with blocks', () => {
+		const out = formatted('if a{1}else if b{2}else{3}');
+		expect(out).toBe(
+			'if a {\n\t1\n} else if b {\n\t2\n} else {\n\t3\n}\n'
+		);
+	});
+
+	it('renders an object-map literal inline when short', () => {
+		const out = formatted('let o=#{a:1,b:2};');
+		expect(out).toBe('let o = #{ a: 1, b: 2 };\n');
+	});
+
+	it('renders log::info as a namespace call', () => {
+		const out = formatted('log::info(  "hi"  );');
+		expect(out).toBe('log::info("hi");\n');
+	});
+
+	it('preserves comments verbatim before statements', () => {
+		const out = formatted('// docstring\nfn process(){1}');
+		expect(out).toBe(
+			'// docstring\nfn process() {\n\t1\n}\n'
+		);
+	});
+
+	it('keeps block comments verbatim', () => {
+		const out = formatted('/* keep me */ let x = 1;');
+		expect(out).toContain('/* keep me */');
+		expect(out).toContain('let x = 1;');
+	});
+
+	it('emits an empty block as `{}` without padding', () => {
+		const out = formatted('fn noop(){}');
+		expect(out).toBe('fn noop() {}\n');
+	});
+
+	it('preserves string literals verbatim', () => {
+		const out = formatted('let s = "hello\\nworld";');
+		expect(out).toBe('let s = "hello\\nworld";\n');
+	});
+});
+
+describe('format — reflow', () => {
+	it('reflows a long argument list onto separate lines', () => {
+		const src =
+			'process(aaaaaaaaaa, bbbbbbbbbb, cccccccccc, dddddddddd, eeeeeeeeee, ffffffffff, gggggggggg, hhhhhhhhhh);';
+		const out = formatted(src);
+		// Should contain at least one newline inside the parens (multi-line).
+		const callBlock = out.slice(out.indexOf('('), out.lastIndexOf(')') + 1);
+		expect(callBlock).toContain('\n');
+		expect(callBlock.endsWith(',\n)')).toBe(true);
+	});
+
+	it('keeps short argument lists inline', () => {
+		const out = formatted('process(1, 2, 3);');
+		expect(out).toBe('process(1, 2, 3);\n');
+	});
+});
+
+describe('format — blank-line preservation', () => {
+	it('preserves a single blank line between statements', () => {
+		const src = 'let a = 1;\n\nlet b = 2;';
+		expect(formatted(src)).toBe('let a = 1;\n\nlet b = 2;\n');
+	});
+
+	it('collapses multiple blank lines to a single one', () => {
+		const src = 'let a = 1;\n\n\n\nlet b = 2;';
+		expect(formatted(src)).toBe('let a = 1;\n\nlet b = 2;\n');
+	});
+
+	it('preserves blanks inside block bodies', () => {
+		const src = 'fn process() {\n\tlet a = 1;\n\n\tlet b = 2;\n}';
+		expect(formatted(src)).toBe('fn process() {\n\tlet a = 1;\n\n\tlet b = 2;\n}\n');
+	});
+
+	it('does not invent blanks between adjacent statements', () => {
+		expect(formatted('let a=1;let b=2;')).toBe('let a = 1;\nlet b = 2;\n');
+	});
+});
+
+describe('format — parse failures', () => {
+	it('returns ok=false with a Rhai-flavored message and 1-based line/column', () => {
+		// Pattern from the user complaint: `let;` should surface as
+		// "Expecting name of a variable" at line/column.
+		const r = format('let msg = ctx.request.params.name;\nlet;\n');
+		expect(r.ok).toBe(false);
+		if (!r.ok) {
+			expect(r.error.message).toBe('Expecting name of a variable');
+			expect(r.error.line).toBe(2);
+			expect(r.error.column).toBe(4);
+			expect(r.error.offset).toBeGreaterThanOrEqual(0);
+		}
+	});
+
+	it('reports script-incomplete on truncated input', () => {
+		// `fn` alone — the parser expects a function name and hits EOF.
+		const r = format('fn');
+		expect(r.ok).toBe(false);
+		if (!r.ok) expect(r.error.message).toMatch(/script is incomplete/i);
+	});
+
+	it('does not partially rewrite when parsing fails', () => {
+		const r = format('let x = 1; this is garbage');
+		expect(r.ok).toBe(false);
+	});
+});
+
+describe('format — idempotent', () => {
+	it('formatting twice yields the same output', () => {
+		const src = `
+			fn process(order,user) {
+				if order.total > 100 {
+					log::info("big", #{id:order.id});
+				} else {
+					log::info("small");
+				}
+				return order;
+			}
+		`;
+		const a = formatted(src);
+		const b = formatted(a);
+		expect(b).toBe(a);
+	});
+});

dashboard/src/lib/rhai/format.ts

@@ -0,0 +1,479 @@
+// Rhai source formatter.
+//
+// Parses the source, walks the AST, emits canonical text. On a parse
+// failure it returns the first error and leaves the caller responsible
+// for showing it (the dashboard's UX mirrors the JSON "Format" button:
+// the doc is untouched and the error is surfaced inline).
+//
+// Choices:
+//   * Indent = one tab. The dashboard CSS is tab-based and the editor
+//     keymaps `indentWithTab`, so matching the existing convention.
+//   * Print width = 100 cols. If an inline-printed call's argument list
+//     would push the current line past 100 cols, the args reflow one
+//     per line with a trailing comma.
+//   * Comments preserved verbatim. Each comment lands on its own line at
+//     the indent of the statement it precedes — same-line inline
+//     positioning is intentionally NOT recovered; the goal is "verbatim
+//     text", not "byte-exact placement".
+//   * Blank lines between statements are preserved when the user wrote
+//     them; multiples collapse to one. The formatter never *adds* blank
+//     lines the user didn't write (rustfmt's default policy applied
+//     strictly — no forced separation between top-level fn decls).
+//   * Block bodies always use multi-line braces. `{}` for empty.
+//   * If parse errors are reported by the parser, the formatter refuses
+//     to emit anything and returns the first error with line / column
+//     coordinates (1-based, matching Rhai's own diagnostic format).
+
+import type {
+	BlockExpr,
+	Comment,
+	Expr,
+	IfExpr,
+	ObjectMapExpr,
+	ParseError,
+	ParseResult,
+	Stmt,
+	SwitchExpr
+} from './ast';
+import { parse } from './parser';
+
+const PRINT_WIDTH = 100;
+
+export type FormatResult =
+	| { ok: true; text: string }
+	| { ok: false; error: FormatError };
+
+export interface FormatError {
+	message: string;
+	// 1-based line and column, matching Rhai's own diagnostic format.
+	line: number;
+	column: number;
+	// Byte offset retained for callers that want to jump the editor
+	// cursor (CodeMirror works in offsets, not line/col).
+	offset: number;
+}
+
+export function format(source: string): FormatResult {
+	const result = parse(source);
+	if (result.errors.length > 0) {
+		return { ok: false, error: errorPayload(source, result.errors[0]) };
+	}
+	const p = new Printer(result);
+	p.printProgram();
+	return { ok: true, text: p.finish() };
+}
+
+function errorPayload(source: string, e: ParseError): FormatError {
+	const { line, column } = lineColAt(source, e.start);
+	return { message: e.message, line, column, offset: e.start };
+}
+
+// Convert a byte offset into 1-based (line, column). Used for rendering
+// parser errors in a way that matches Rhai's own diagnostic format
+// (e.g. "Expecting name of a variable (line 2, position 4)").
+function lineColAt(source: string, offset: number): { line: number; column: number } {
+	let line = 1;
+	let lineStart = 0;
+	const limit = Math.min(offset, source.length);
+	for (let i = 0; i < limit; i++) {
+		if (source.charCodeAt(i) === 10) {
+			line++;
+			lineStart = i + 1;
+		}
+	}
+	return { line, column: limit - lineStart + 1 };
+}
+
+class Printer {
+	private buf = '';
+	private indent = 0;
+	private commentPtr = 0;
+
+	constructor(private result: ParseResult) {}
+
+	finish(): string {
+		this.drainCommentsBefore(this.result.source.length + 1);
+		// Strip trailing whitespace from every line; ensure a single
+		// terminating newline.
+		const text = this.buf.replace(/[ \t]+$/gm, '').replace(/\n*$/, '\n');
+		return text;
+	}
+
+	// ---------------------------------------------------------------- emit
+
+	private emit(s: string): void {
+		this.buf += s;
+	}
+
+	private newline(): void {
+		this.buf += '\n' + '\t'.repeat(this.indent);
+	}
+
+	private blankLine(): void {
+		// Two newlines, but never more than that.
+		if (this.buf.endsWith('\n\n' + '\t'.repeat(this.indent))) return;
+		// Remove any trailing indent we already wrote so the blank line is
+		// truly blank (no stray tabs).
+		this.buf = this.buf.replace(/[ \t]*$/, '');
+		if (!this.buf.endsWith('\n')) this.buf += '\n';
+		this.buf += '\n' + '\t'.repeat(this.indent);
+	}
+
+	private column(): number {
+		const last = this.buf.lastIndexOf('\n');
+		return this.buf.length - (last + 1);
+	}
+
+	// Run `body` against a scratch buffer, return the text it would have
+	// appended. Useful for measuring before deciding whether to reflow.
+	private measure(body: () => void): string {
+		const prev = this.buf;
+		body();
+		const text = this.buf.slice(prev.length);
+		this.buf = prev;
+		return text;
+	}
+
+	// ------------------------------------------------------------ comments
+
+	private drainCommentsBefore(pos: number): void {
+		const comments = this.result.comments;
+		while (this.commentPtr < comments.length && comments[this.commentPtr].start < pos) {
+			const c = comments[this.commentPtr++];
+			this.emitComment(c);
+		}
+	}
+
+	private emitComment(c: Comment): void {
+		// Emit each comment on its own line at the current indent. For
+		// block comments we still keep the original text (which may span
+		// multiple lines) verbatim.
+		this.emit(c.text);
+		this.newline();
+	}
+
+	// ------------------------------------------------------------- program
+
+	printProgram(): void {
+		const stmts = this.result.program.stmts;
+		for (let i = 0; i < stmts.length; i++) {
+			const stmt = stmts[i];
+			if (i > 0) {
+				if (this.hadBlankBetween(stmts[i - 1].end, stmt.start)) this.blankLine();
+				else this.newline();
+			}
+			this.drainCommentsBefore(stmt.start);
+			this.printStmt(stmt);
+		}
+	}
+
+	// "Did the user leave a blank line in this gap?" Consulted between
+	// every pair of emitted statements to decide whether to keep the
+	// vertical separator the source originally had.
+	private hadBlankBetween(prevEnd: number, currStart: number): boolean {
+		for (const offset of this.result.blankLines) {
+			if (offset >= prevEnd && offset < currStart) return true;
+		}
+		return false;
+	}
+
+	// ---------------------------------------------------------- statements
+
+	private printStmt(stmt: Stmt): void {
+		switch (stmt.kind) {
+			case 'Let':
+			case 'Const': {
+				this.emit(stmt.kind === 'Let' ? 'let ' : 'const ');
+				this.emit(stmt.name);
+				if (stmt.init) {
+					this.emit(' = ');
+					this.printExpr(stmt.init);
+				}
+				this.emit(';');
+				return;
+			}
+			case 'FnDecl': {
+				this.emit('fn ');
+				this.emit(stmt.name);
+				this.emit('(');
+				this.emit(stmt.params.map((p) => p.name).join(', '));
+				this.emit(') ');
+				this.printBlock(stmt.body);
+				return;
+			}
+			case 'ExprStmt': {
+				this.printExpr(stmt.expr);
+				// Preserve whether the user terminated with `;`. Block-form
+				// expressions never take one, so suppress regardless.
+				if (stmt.semi && !isBlockForm(stmt.expr)) this.emit(';');
+				return;
+			}
+			case 'Return': {
+				this.emit('return');
+				if (stmt.value) {
+					this.emit(' ');
+					this.printExpr(stmt.value);
+				}
+				this.emit(';');
+				return;
+			}
+			case 'While': {
+				this.emit('while ');
+				this.printExpr(stmt.cond);
+				this.emit(' ');
+				this.printBlock(stmt.body);
+				return;
+			}
+			case 'Loop': {
+				this.emit('loop ');
+				this.printBlock(stmt.body);
+				return;
+			}
+			case 'For': {
+				this.emit('for ');
+				this.emit(stmt.varName);
+				this.emit(' in ');
+				this.printExpr(stmt.iter);
+				this.emit(' ');
+				this.printBlock(stmt.body);
+				return;
+			}
+			case 'Break':
+				this.emit('break;');
+				return;
+			case 'Continue':
+				this.emit('continue;');
+				return;
+			case 'Try': {
+				this.emit('try ');
+				this.printBlock(stmt.body);
+				this.emit(' catch');
+				if (stmt.catchVar) {
+					this.emit(' (');
+					this.emit(stmt.catchVar);
+					this.emit(') ');
+				} else {
+					this.emit(' ');
+				}
+				this.printBlock(stmt.handler);
+				return;
+			}
+		}
+	}
+
+	private printBlock(block: BlockExpr): void {
+		if (block.stmts.length === 0) {
+			this.drainCommentsBefore(block.end);
+			this.emit('{}');
+			return;
+		}
+		this.emit('{');
+		this.indent++;
+		for (let i = 0; i < block.stmts.length; i++) {
+			if (i > 0 && this.hadBlankBetween(block.stmts[i - 1].end, block.stmts[i].start)) {
+				this.blankLine();
+			} else {
+				this.newline();
+			}
+			this.drainCommentsBefore(block.stmts[i].start);
+			this.printStmt(block.stmts[i]);
+		}
+		this.drainCommentsBefore(block.end);
+		this.indent--;
+		this.newline();
+		this.emit('}');
+	}
+
+	// --------------------------------------------------------- expressions
+
+	private printExpr(expr: Expr): void {
+		switch (expr.kind) {
+			case 'Ident':
+				this.emit(expr.name);
+				return;
+			case 'Number':
+			case 'String':
+				this.emit(expr.raw);
+				return;
+			case 'Bool':
+				this.emit(expr.value ? 'true' : 'false');
+				return;
+			case 'Null':
+				this.emit('null');
+				return;
+			case 'Member': {
+				this.printExpr(expr.object);
+				// `log::info` was parsed as Member(Ident(log), 'info'); restore
+				// the namespace separator for known namespaces. `ctx.request`
+				// always uses `.` because we parsed it that way.
+				const sep = isNamespacePath(expr.object) ? '::' : '.';
+				this.emit(sep);
+				this.emit(expr.property);
+				return;
+			}
+			case 'Index':
+				this.printExpr(expr.object);
+				this.emit('[');
+				this.printExpr(expr.index);
+				this.emit(']');
+				return;
+			case 'Call':
+				this.printExpr(expr.callee);
+				this.printArgList('(', ')', expr.args);
+				return;
+			case 'Unary':
+				this.emit(expr.op);
+				this.printExpr(expr.operand);
+				return;
+			case 'Binary':
+				this.printExpr(expr.left);
+				this.emit(` ${expr.op} `);
+				this.printExpr(expr.right);
+				return;
+			case 'Assign':
+				this.printExpr(expr.target);
+				this.emit(` ${expr.op} `);
+				this.printExpr(expr.value);
+				return;
+			case 'Paren':
+				this.emit('(');
+				this.printExpr(expr.expr);
+				this.emit(')');
+				return;
+			case 'Array':
+				this.printArgList('[', ']', expr.elements);
+				return;
+			case 'ObjectMap':
+				this.printObjectMap(expr);
+				return;
+			case 'FnExpr':
+				this.emit('fn (');
+				this.emit(expr.params.map((p) => p.name).join(', '));
+				this.emit(') ');
+				this.printBlock(expr.body);
+				return;
+			case 'IfExpr':
+				this.printIf(expr);
+				return;
+			case 'SwitchExpr':
+				this.printSwitch(expr);
+				return;
+			case 'BlockExpr':
+				this.printBlock(expr);
+				return;
+		}
+	}
+
+	private printArgList(open: string, close: string, items: Expr[]): void {
+		if (items.length === 0) {
+			this.emit(open);
+			this.emit(close);
+			return;
+		}
+		const inline = this.measure(() => {
+			this.emit(open);
+			for (let i = 0; i < items.length; i++) {
+				if (i > 0) this.emit(', ');
+				this.printExpr(items[i]);
+			}
+			this.emit(close);
+		});
+		if (!inline.includes('\n') && this.column() + inline.length <= PRINT_WIDTH) {
+			this.emit(inline);
+			return;
+		}
+		this.emit(open);
+		this.indent++;
+		for (const item of items) {
+			this.newline();
+			this.printExpr(item);
+			this.emit(',');
+		}
+		this.indent--;
+		this.newline();
+		this.emit(close);
+	}
+
+	private printObjectMap(expr: ObjectMapExpr): void {
+		if (expr.entries.length === 0) {
+			this.emit('#{}');
+			return;
+		}
+		const inline = this.measure(() => {
+			this.emit('#{ ');
+			for (let i = 0; i < expr.entries.length; i++) {
+				const e = expr.entries[i];
+				if (i > 0) this.emit(', ');
+				this.emit(e.key);
+				this.emit(': ');
+				this.printExpr(e.value);
+			}
+			this.emit(' }');
+		});
+		if (!inline.includes('\n') && this.column() + inline.length <= PRINT_WIDTH) {
+			this.emit(inline);
+			return;
+		}
+		this.emit('#{');
+		this.indent++;
+		for (const e of expr.entries) {
+			this.newline();
+			this.emit(e.key);
+			this.emit(': ');
+			this.printExpr(e.value);
+			this.emit(',');
+		}
+		this.indent--;
+		this.newline();
+		this.emit('}');
+	}
+
+	private printIf(expr: IfExpr): void {
+		this.emit('if ');
+		this.printExpr(expr.cond);
+		this.emit(' ');
+		this.printBlock(expr.then);
+		if (expr.else_) {
+			this.emit(' else ');
+			if (expr.else_.kind === 'IfExpr') this.printIf(expr.else_);
+			else this.printBlock(expr.else_);
+		}
+	}
+
+	private printSwitch(expr: SwitchExpr): void {
+		this.emit('switch ');
+		this.printExpr(expr.subject);
+		this.emit(' {');
+		this.indent++;
+		for (const arm of expr.arms) {
+			this.newline();
+			if (arm.pattern === null) this.emit('_');
+			else this.printExpr(arm.pattern);
+			if (arm.guard) {
+				this.emit(' if ');
+				this.printExpr(arm.guard);
+			}
+			this.emit(' => ');
+			this.printExpr(arm.value);
+			this.emit(',');
+		}
+		this.indent--;
+		this.newline();
+		this.emit('}');
+	}
+}
+
+function isBlockForm(expr: Expr): boolean {
+	return expr.kind === 'IfExpr' || expr.kind === 'SwitchExpr' || expr.kind === 'BlockExpr' || expr.kind === 'FnExpr';
+}
+
+// Namespace path detection — used by `Member` printing to decide between
+// `.` and `::`. Currently the only well-known namespace in scripts is
+// `log`, but we generalize to any bare identifier whose name happens to
+// be the namespace token. False positives are harmless (we'd render
+// `something::field` for a local named `log`); the parser-side fix would
+// be a dedicated `Path` node — not worth it for one keyword.
+function isNamespacePath(expr: Expr): boolean {
+	if (expr.kind === 'Ident') return expr.name === 'log';
+	return false;
+}

dashboard/src/lib/rhai/index.ts

@@ -0,0 +1,18 @@
+// Public entry points for the Rhai parser package. Editor features
+// import from here.
+
+export { parse } from './parser';
+export { tokenize, KEYWORDS } from './lexer';
+export { buildSymbolTable, renderFnSignature } from './symbols';
+export { format } from './format';
+export type { FormatError, FormatResult } from './format';
+export type { Decl, DeclKind, Scope, SymbolTable, Usage } from './symbols';
+export type {
+	BlockExpr,
+	Comment,
+	Expr,
+	ParseError,
+	ParseResult,
+	Range,
+	Stmt
+} from './ast';

dashboard/src/lib/rhai/lexer.test.ts

@@ -0,0 +1,73 @@
+import { describe, it, expect } from 'vitest';
+import { tokenize } from './lexer';
+
+function kinds(src: string): string[] {
+	return tokenize(src).tokens.filter((t) => t.kind !== 'EOF').map((t) => t.kind);
+}
+
+function texts(src: string): string[] {
+	return tokenize(src).tokens.filter((t) => t.kind !== 'EOF').map((t) => t.text);
+}
+
+describe('lexer', () => {
+	it('emits an EOF for empty input', () => {
+		const { tokens } = tokenize('');
+		expect(tokens).toHaveLength(1);
+		expect(tokens[0].kind).toBe('EOF');
+	});
+
+	it('distinguishes keywords from identifiers', () => {
+		const { tokens } = tokenize('let foo = bar;');
+		expect(tokens[0]).toMatchObject({ kind: 'Keyword', text: 'let' });
+		expect(tokens[1]).toMatchObject({ kind: 'Ident', text: 'foo' });
+		expect(tokens[2]).toMatchObject({ kind: 'Operator', text: '=' });
+		expect(tokens[3]).toMatchObject({ kind: 'Ident', text: 'bar' });
+		expect(tokens[4]).toMatchObject({ kind: 'Punct', text: ';' });
+	});
+
+	it('lexes integer, float, hex, and binary numbers', () => {
+		expect(texts('1 1.5 0xff 0b1010 1e10 1_000')).toEqual(['1', '1.5', '0xff', '0b1010', '1e10', '1_000']);
+		expect(kinds('1 1.5 0xff')).toEqual(['Number', 'Number', 'Number']);
+	});
+
+	it('lexes double-quote and backtick strings', () => {
+		const { tokens } = tokenize('"hi" `world`');
+		expect(tokens[0]).toMatchObject({ kind: 'String', text: '"hi"' });
+		expect(tokens[1]).toMatchObject({ kind: 'String', text: '`world`' });
+	});
+
+	it('preserves backslash escapes inside double-quoted strings', () => {
+		const { tokens } = tokenize('"a\\"b"');
+		expect(tokens[0].text).toBe('"a\\"b"');
+	});
+
+	it('captures line and block comments as comments, not tokens', () => {
+		const { tokens, comments } = tokenize('let x = 1; // tail\n/* block */ y');
+		expect(comments.map((c) => c.kind)).toEqual(['LineComment', 'BlockComment']);
+		expect(tokens.find((t) => t.text === '//' || t.text === '/*')).toBeUndefined();
+	});
+
+	it('handles nested block comments', () => {
+		const { comments } = tokenize('/* outer /* inner */ still outer */');
+		expect(comments).toHaveLength(1);
+		expect(comments[0].text).toBe('/* outer /* inner */ still outer */');
+	});
+
+	it('lexes multi-character operators greedily', () => {
+		expect(texts('a == b && c != d')).toEqual(['a', '==', 'b', '&&', 'c', '!=', 'd']);
+		expect(texts('a ?? b ??= c')).toEqual(['a', '??', 'b', '??=', 'c']);
+		expect(texts('1..=10')).toEqual(['1', '..=', '10']);
+	});
+
+	it('recognizes #{ as separate punctuation tokens', () => {
+		const { tokens } = tokenize('#{}');
+		expect(tokens.slice(0, 3).map((t) => t.text)).toEqual(['#', '{', '}']);
+	});
+
+	it('records accurate byte ranges', () => {
+		const src = 'let abc = 42;';
+		const { tokens } = tokenize(src);
+		const abc = tokens.find((t) => t.text === 'abc')!;
+		expect(src.slice(abc.start, abc.end)).toBe('abc');
+	});
+});

dashboard/src/lib/rhai/lexer.ts

@@ -0,0 +1,266 @@
+// Tokenizer for the dashboard's Rhai parser.
+//
+// Produces a flat array of tokens (eager — Rhai scripts in the dashboard
+// are small, 20–200 lines typical) plus a separate list of comments. The
+// parser only sees tokens; comments are handed to the formatter so it
+// can re-emit them at the right positions.
+//
+// Keyword and operator lists trace back to the upstream TextMate grammar
+// (rhaiscript/vscode-rhai). We don't copy any grammar bytes.
+
+import type { Comment, Range } from './ast';
+
+export type TokenKind =
+	| 'Ident'
+	| 'Keyword'
+	| 'Number'
+	| 'String'
+	| 'Punct'
+	| 'Operator'
+	| 'EOF';
+
+export interface Token extends Range {
+	kind: TokenKind;
+	// For Ident/Keyword/Punct/Operator: the literal source text. For
+	// Number/String: the full literal including quotes.
+	text: string;
+}
+
+export const KEYWORDS = new Set([
+	'let',
+	'const',
+	'fn',
+	'if',
+	'else',
+	'while',
+	'loop',
+	'do',
+	'for',
+	'in',
+	'return',
+	'break',
+	'continue',
+	'switch',
+	'case',
+	'default',
+	'true',
+	'false',
+	'null',
+	'try',
+	'catch',
+	'throw',
+	'as',
+	'is',
+	'private'
+]);
+
+// Multi-char operators, longest first so the lexer picks them up greedily.
+const MULTI_CHAR_OPS = [
+	'??=',
+	'..=',
+	'??',
+	'..',
+	'::',
+	'==',
+	'!=',
+	'<=',
+	'>=',
+	'&&',
+	'||',
+	'<<',
+	'>>',
+	'+=',
+	'-=',
+	'*=',
+	'/=',
+	'%=',
+	'=>',
+	'->'
+];
+
+const SINGLE_CHAR_OPS = new Set(['+', '-', '*', '/', '%', '<', '>', '!', '&', '|', '^', '~', '=', '?']);
+
+// `#` is included so we can recognize the start of `#{` object-map literals;
+// the lexer emits it as a separate `Punct` and the parser combines it with
+// the following `{`.
+const PUNCTS = new Set(['(', ')', '{', '}', '[', ']', ';', ',', '.', ':', '#']);
+
+export interface LexResult {
+	tokens: Token[];
+	comments: Comment[];
+	// Offsets at which the source contained at least one blank line (a
+	// run of whitespace with two or more newlines). One entry per blank
+	// run, pointing at the second-newline position. Used by the formatter
+	// to preserve user-intent vertical grouping.
+	blankLines: number[];
+}
+
+export function tokenize(source: string): LexResult {
+	const tokens: Token[] = [];
+	const comments: Comment[] = [];
+	const blankLines: number[] = [];
+	let i = 0;
+	const n = source.length;
+
+	while (i < n) {
+		const ch = source[i];
+
+		// Whitespace — coalesce runs and record blank-line offsets.
+		if (ch === ' ' || ch === '\t' || ch === '\n' || ch === '\r') {
+			let newlines = 0;
+			let blankAt = -1;
+			while (i < n) {
+				const c = source[i];
+				if (c === '\n') {
+					newlines++;
+					if (newlines === 2) blankAt = i;
+				} else if (c !== ' ' && c !== '\t' && c !== '\r') {
+					break;
+				}
+				i++;
+			}
+			if (blankAt >= 0) blankLines.push(blankAt);
+			continue;
+		}
+
+		// Line comment
+		if (ch === '/' && source[i + 1] === '/') {
+			const start = i;
+			while (i < n && source[i] !== '\n') i++;
+			comments.push({ kind: 'LineComment', start, end: i, text: source.slice(start, i) });
+			continue;
+		}
+
+		// Block comment (supports nesting per the Rhai book)
+		if (ch === '/' && source[i + 1] === '*') {
+			const start = i;
+			i += 2;
+			let depth = 1;
+			while (i < n && depth > 0) {
+				if (source[i] === '/' && source[i + 1] === '*') {
+					depth++;
+					i += 2;
+				} else if (source[i] === '*' && source[i + 1] === '/') {
+					depth--;
+					i += 2;
+				} else {
+					i++;
+				}
+			}
+			comments.push({ kind: 'BlockComment', start, end: i, text: source.slice(start, i) });
+			continue;
+		}
+
+		// Strings: " ... " (escape-aware, single-line by convention) and
+		// ` ... ` (raw, multi-line). We tokenize the entire literal including
+		// quotes; the parser only cares about its position and text.
+		if (ch === '"' || ch === '`') {
+			const quote = ch;
+			const start = i;
+			i++;
+			while (i < n) {
+				const c = source[i];
+				if (c === '\\' && quote === '"') {
+					i += 2;
+					continue;
+				}
+				if (c === quote) {
+					i++;
+					break;
+				}
+				i++;
+			}
+			tokens.push({ kind: 'String', start, end: i, text: source.slice(start, i) });
+			continue;
+		}
+
+		// Numbers: hex, binary, decimal, optional `.frac`, optional exponent.
+		// Underscores are allowed as digit separators per Rhai.
+		if (isDigit(ch)) {
+			const start = i;
+			if (ch === '0' && (source[i + 1] === 'x' || source[i + 1] === 'X')) {
+				i += 2;
+				while (i < n && (isHexDigit(source[i]) || source[i] === '_')) i++;
+			} else if (ch === '0' && (source[i + 1] === 'b' || source[i + 1] === 'B')) {
+				i += 2;
+				while (i < n && (source[i] === '0' || source[i] === '1' || source[i] === '_')) i++;
+			} else {
+				while (i < n && (isDigit(source[i]) || source[i] === '_')) i++;
+				if (source[i] === '.' && isDigit(source[i + 1])) {
+					i++;
+					while (i < n && (isDigit(source[i]) || source[i] === '_')) i++;
+				}
+				if (source[i] === 'e' || source[i] === 'E') {
+					i++;
+					if (source[i] === '+' || source[i] === '-') i++;
+					while (i < n && isDigit(source[i])) i++;
+				}
+			}
+			tokens.push({ kind: 'Number', start, end: i, text: source.slice(start, i) });
+			continue;
+		}
+
+		// Identifier or keyword
+		if (isIdentStart(ch)) {
+			const start = i;
+			i++;
+			while (i < n && isIdentCont(source[i])) i++;
+			const text = source.slice(start, i);
+			tokens.push({
+				kind: KEYWORDS.has(text) ? 'Keyword' : 'Ident',
+				start,
+				end: i,
+				text
+			});
+			continue;
+		}
+
+		// Multi-char operators
+		let matched = false;
+		for (const op of MULTI_CHAR_OPS) {
+			if (source.startsWith(op, i)) {
+				tokens.push({ kind: 'Operator', start: i, end: i + op.length, text: op });
+				i += op.length;
+				matched = true;
+				break;
+			}
+		}
+		if (matched) continue;
+
+		// Single-char operator
+		if (SINGLE_CHAR_OPS.has(ch)) {
+			tokens.push({ kind: 'Operator', start: i, end: i + 1, text: ch });
+			i++;
+			continue;
+		}
+
+		// Punctuation
+		if (PUNCTS.has(ch)) {
+			tokens.push({ kind: 'Punct', start: i, end: i + 1, text: ch });
+			i++;
+			continue;
+		}
+
+		// Unrecognized: skip and let the parser report the gap if needed.
+		i++;
+	}
+
+	tokens.push({ kind: 'EOF', start: n, end: n, text: '' });
+	return { tokens, comments, blankLines };
+}
+
+function isDigit(c: string): boolean {
+	return c >= '0' && c <= '9';
+}
+
+function isHexDigit(c: string): boolean {
+	return isDigit(c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
+}
+
+function isIdentStart(c: string): boolean {
+	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c === '_';
+}
+
+function isIdentCont(c: string): boolean {
+	return isIdentStart(c) || isDigit(c);
+}

dashboard/src/lib/rhai/parser.test.ts

@@ -0,0 +1,126 @@
+import { describe, it, expect } from 'vitest';
+import { parse } from './parser';
+import type { BinaryExpr, ExprStmt, FnDecl, LetStmt } from './ast';
+
+describe('parser — declarations', () => {
+	it('parses a let binding with initializer', () => {
+		const { program, errors } = parse('let x = 1 + 2;');
+		expect(errors).toEqual([]);
+		expect(program.stmts).toHaveLength(1);
+		const let_ = program.stmts[0] as LetStmt;
+		expect(let_.kind).toBe('Let');
+		expect(let_.name).toBe('x');
+		expect(let_.init?.kind).toBe('Binary');
+	});
+
+	it('parses a const binding', () => {
+		const { program, errors } = parse('const PI = 3.14;');
+		expect(errors).toEqual([]);
+		expect(program.stmts[0]).toMatchObject({ kind: 'Const', name: 'PI' });
+	});
+
+	it('parses fn declarations with parameters', () => {
+		const { program, errors } = parse('fn process(order, user) { order.total }');
+		expect(errors).toEqual([]);
+		const fn = program.stmts[0] as FnDecl;
+		expect(fn.kind).toBe('FnDecl');
+		expect(fn.name).toBe('process');
+		expect(fn.params.map((p) => p.name)).toEqual(['order', 'user']);
+		expect(fn.body.stmts).toHaveLength(1);
+	});
+});
+
+describe('parser — expressions', () => {
+	it('respects binary precedence (* before +)', () => {
+		const { program } = parse('let a = 1 + 2 * 3;');
+		const e = (program.stmts[0] as LetStmt).init as BinaryExpr;
+		expect(e.kind).toBe('Binary');
+		expect(e.op).toBe('+');
+		const right = e.right as BinaryExpr;
+		expect(right.op).toBe('*');
+	});
+
+	it('parses method chains (member + call + index)', () => {
+		const { program, errors } = parse('let x = ctx.request.body["k"];');
+		expect(errors).toEqual([]);
+		const init = (program.stmts[0] as LetStmt).init!;
+		expect(init.kind).toBe('Index');
+	});
+
+	it('parses log::info("hi") as Call(Member(Ident(log), "info"), ["hi"])', () => {
+		const { program, errors } = parse('log::info("hi");');
+		expect(errors).toEqual([]);
+		const stmt = program.stmts[0] as ExprStmt;
+		expect(stmt.expr.kind).toBe('Call');
+	});
+
+	it('parses object-map literal #{} with keys', () => {
+		const { program, errors } = parse('let o = #{ a: 1, b: 2 };');
+		expect(errors).toEqual([]);
+		const init = (program.stmts[0] as LetStmt).init!;
+		expect(init.kind).toBe('ObjectMap');
+		if (init.kind === 'ObjectMap') {
+			expect(init.entries.map((e) => e.key)).toEqual(['a', 'b']);
+		}
+	});
+
+	it('parses array literals', () => {
+		const { program, errors } = parse('let xs = [1, 2, 3];');
+		expect(errors).toEqual([]);
+		expect((program.stmts[0] as LetStmt).init!.kind).toBe('Array');
+	});
+
+	it('parses if-as-expression for let RHS', () => {
+		const { program, errors } = parse('let x = if true { 1 } else { 2 };');
+		expect(errors).toEqual([]);
+		expect((program.stmts[0] as LetStmt).init!.kind).toBe('IfExpr');
+	});
+});
+
+describe('parser — control flow', () => {
+	it('parses while, for, loop', () => {
+		const { errors: e1 } = parse('while true { break; }');
+		const { errors: e2 } = parse('for x in [1, 2] { x }');
+		const { errors: e3 } = parse('loop { break; }');
+		expect(e1).toEqual([]);
+		expect(e2).toEqual([]);
+		expect(e3).toEqual([]);
+	});
+
+	it('parses if / else if / else chains', () => {
+		const { program, errors } = parse(`
+			if a { 1 } else if b { 2 } else { 3 }
+		`);
+		expect(errors).toEqual([]);
+		const stmt = program.stmts[0] as ExprStmt;
+		expect(stmt.expr.kind).toBe('IfExpr');
+	});
+
+	it('parses try / catch with binding', () => {
+		const { errors } = parse('try { foo(); } catch (e) { log::error(e); }');
+		expect(errors).toEqual([]);
+	});
+});
+
+describe('parser — error tolerance', () => {
+	it('is lenient about missing semicolons between statements', () => {
+		// The parser accepts implicit statement separation so completions
+		// remain useful while the user is still typing. Both bindings
+		// should land in the program regardless of the missing `;`.
+		const { program } = parse('let x = 1 let y = 2;');
+		const names = program.stmts.flatMap((s) => (s.kind === 'Let' ? [s.name] : []));
+		expect(names).toContain('x');
+		expect(names).toContain('y');
+	});
+
+	it('does not loop forever on garbage', () => {
+		const { errors } = parse('@@@ ### }}}');
+		expect(errors.length).toBeGreaterThan(0);
+	});
+
+	it('recovers after a bad statement and parses the next one', () => {
+		const { program } = parse('let = ; let y = 2;');
+		const y = program.stmts.find((s) => s.kind === 'Let' && s.name === 'y');
+		expect(y).toBeDefined();
+	});
+});

dashboard/src/lib/rhai/parser.ts

@@ -0,0 +1,605 @@
+// Parser for the dashboard's Rhai mode.
+//
+// Recursive descent for statements, Pratt precedence climbing for
+// expressions. Error-tolerant: on unexpected input the parser records an
+// error, resyncs to the next `;` or matching `}`, and keeps going. The
+// AST it returns is best-effort — partial trees are fine; callers
+// (autocomplete, goto-def) tolerate gaps.
+
+import type {
+	BlockExpr,
+	Expr,
+	FnDecl,
+	IfExpr,
+	ObjectMapEntry,
+	Param,
+	ParseError,
+	ParseResult,
+	Stmt,
+	SwitchArm
+} from './ast';
+import { tokenize, type Token, type TokenKind } from './lexer';
+
+export function parse(source: string): ParseResult {
+	const { tokens, comments, blankLines } = tokenize(source);
+	const p = new Parser(source, tokens);
+	const program = p.parseProgram();
+	return { source, program, errors: p.errors, comments, blankLines };
+}
+
+// Precedence levels for binary operators. Higher binds tighter. Assignment
+// is special-cased outside the binary chain because it's right-associative
+// and only legal at the top of an expression.
+const BINARY_PRECEDENCE: Record<string, number> = {
+	'??': 1,
+	'||': 2,
+	'&&': 3,
+	'==': 4,
+	'!=': 4,
+	'<': 5,
+	'<=': 5,
+	'>': 5,
+	'>=': 5,
+	'|': 6,
+	'^': 7,
+	'&': 8,
+	'<<': 9,
+	'>>': 9,
+	'+': 10,
+	'-': 10,
+	'*': 11,
+	'/': 11,
+	'%': 11,
+	'..': 12,
+	'..=': 12
+};
+
+const ASSIGN_OPS = new Set(['=', '+=', '-=', '*=', '/=', '%=', '??=']);
+const UNARY_OPS = new Set(['!', '-', '+', '~']);
+
+class Parser {
+	pos = 0;
+	errors: ParseError[] = [];
+	constructor(
+		private source: string,
+		private tokens: Token[]
+	) {}
+
+	// -------------------------------------------------------------------- nav
+
+	private peek(offset = 0): Token {
+		return this.tokens[Math.min(this.pos + offset, this.tokens.length - 1)];
+	}
+
+	private advance(): Token {
+		const t = this.tokens[this.pos];
+		if (this.pos < this.tokens.length - 1) this.pos++;
+		return t;
+	}
+
+	private match(kind: TokenKind, text?: string): boolean {
+		const t = this.peek();
+		if (t.kind !== kind) return false;
+		if (text !== undefined && t.text !== text) return false;
+		this.advance();
+		return true;
+	}
+
+	private check(kind: TokenKind, text?: string): boolean {
+		const t = this.peek();
+		if (t.kind !== kind) return false;
+		if (text !== undefined && t.text !== text) return false;
+		return true;
+	}
+
+	// `role` is a human-readable description of what was expected, used
+	// in place of the bare token kind so the message reads like Rhai's
+	// own diagnostics (`Expecting name of a variable` rather than
+	// `expected ident`). Falls back to the literal/kind when omitted.
+	private expect(kind: TokenKind, text?: string, role?: string): Token {
+		const t = this.peek();
+		if (t.kind === kind && (text === undefined || t.text === text)) {
+			return this.advance();
+		}
+		if (t.kind === 'EOF') {
+			this.error(t, role ? `Expecting ${role} — script is incomplete` : 'Script is incomplete');
+		} else {
+			const desc = role ?? (text !== undefined ? `'${text}'` : kind.toLowerCase());
+			this.error(t, `Expecting ${desc}`);
+		}
+		// Return the token without consuming so the caller's parent can
+		// still resync at its own boundary.
+		return t;
+	}
+
+	private error(at: Token, message: string): void {
+		this.errors.push({ start: at.start, end: at.end, message });
+	}
+
+	// Resync to the next statement boundary inside the current block. Used
+	// when a statement fails to parse — we drop tokens until we either land
+	// on `;` (consumed) or `}` / EOF (left for the caller).
+	private resyncStmt(): void {
+		let depth = 0;
+		while (true) {
+			const t = this.peek();
+			if (t.kind === 'EOF') return;
+			if (t.kind === 'Punct') {
+				if (t.text === '{' || t.text === '(' || t.text === '[') depth++;
+				else if (t.text === '}' || t.text === ')' || t.text === ']') {
+					if (depth === 0) return;
+					depth--;
+				} else if (depth === 0 && t.text === ';') {
+					this.advance();
+					return;
+				}
+			}
+			this.advance();
+		}
+	}
+
+	// ------------------------------------------------------------ top level
+
+	parseProgram(): BlockExpr {
+		const start = this.peek().start;
+		const stmts: Stmt[] = [];
+		while (this.peek().kind !== 'EOF') {
+			const before = this.pos;
+			const stmt = this.parseStmt();
+			if (stmt) stmts.push(stmt);
+			else if (this.pos === before) {
+				// No forward progress — drop a token to avoid an infinite loop.
+				this.advance();
+			}
+		}
+		const last = this.tokens[this.tokens.length - 1];
+		return { kind: 'BlockExpr', start, end: last.end, stmts };
+	}
+
+	// ----------------------------------------------------------- statements
+
+	private parseStmt(): Stmt | null {
+		const t = this.peek();
+
+		if (t.kind === 'Keyword') {
+			switch (t.text) {
+				case 'let':
+					return this.parseLetOrConst('Let');
+				case 'const':
+					return this.parseLetOrConst('Const');
+				case 'fn':
+					return this.parseFnDecl();
+				case 'return':
+					return this.parseReturn();
+				case 'while':
+					return this.parseWhile();
+				case 'loop':
+					return this.parseLoop();
+				case 'for':
+					return this.parseFor();
+				case 'break': {
+					this.advance();
+					const semi = this.match('Punct', ';');
+					return { kind: 'Break', start: t.start, end: semi ? t.end + 1 : t.end };
+				}
+				case 'continue': {
+					this.advance();
+					const semi = this.match('Punct', ';');
+					return { kind: 'Continue', start: t.start, end: semi ? t.end + 1 : t.end };
+				}
+				case 'try':
+					return this.parseTry();
+			}
+		}
+
+		// Stray semicolons are no-ops; consume and try again.
+		if (this.match('Punct', ';')) return null;
+
+		// Expression statement (also covers if/switch/block-as-stmt because
+		// those parse as expressions).
+		const expr = this.tryParseExpr();
+		if (!expr) {
+			const bad = this.peek();
+			this.error(bad, bad.kind === 'EOF' ? 'Script is incomplete' : `Unexpected token '${bad.text}'`);
+			this.resyncStmt();
+			return null;
+		}
+		const semi = this.match('Punct', ';');
+		return {
+			kind: 'ExprStmt',
+			start: expr.start,
+			end: semi ? this.tokens[this.pos - 1].end : expr.end,
+			expr,
+			semi
+		};
+	}
+
+	private parseLetOrConst(kind: 'Let' | 'Const'): Stmt {
+		const start = this.advance().start; // let|const
+		const nameTok = this.expect('Ident', undefined, 'name of a variable');
+		const name = nameTok.text;
+		const nameRange = { start: nameTok.start, end: nameTok.end };
+		let init: Expr | null = null;
+		if (this.match('Operator', '=')) {
+			init = this.tryParseExpr() ?? null;
+		}
+		const semi = this.match('Punct', ';');
+		const end = semi ? this.tokens[this.pos - 1].end : init ? init.end : nameTok.end;
+		return { kind, start, end, name, nameRange, init } as Stmt;
+	}
+
+	private parseFnDecl(): FnDecl {
+		const start = this.advance().start; // fn
+		const nameTok = this.expect('Ident', undefined, 'function name in function declaration');
+		this.expect('Punct', '(');
+		const params: Param[] = [];
+		while (!this.check('Punct', ')') && this.peek().kind !== 'EOF') {
+			const pTok = this.expect('Ident', undefined, 'parameter name');
+			params.push({ name: pTok.text, start: pTok.start, end: pTok.end });
+			if (!this.match('Punct', ',')) break;
+		}
+		this.expect('Punct', ')');
+		const body = this.parseBlockExpr();
+		return {
+			kind: 'FnDecl',
+			start,
+			end: body.end,
+			name: nameTok.text,
+			nameRange: { start: nameTok.start, end: nameTok.end },
+			params,
+			body
+		};
+	}
+
+	private parseReturn(): Stmt {
+		const start = this.advance().start; // return
+		let value: Expr | null = null;
+		if (!this.check('Punct', ';') && !this.check('Punct', '}') && this.peek().kind !== 'EOF') {
+			value = this.tryParseExpr() ?? null;
+		}
+		const semi = this.match('Punct', ';');
+		const end = semi ? this.tokens[this.pos - 1].end : value ? value.end : start + 'return'.length;
+		return { kind: 'Return', start, end, value };
+	}
+
+	private parseWhile(): Stmt {
+		const start = this.advance().start; // while
+		const cond = this.tryParseExpr() ?? this.placeholderExpr();
+		const body = this.parseBlockExpr();
+		return { kind: 'While', start, end: body.end, cond, body };
+	}
+
+	private parseLoop(): Stmt {
+		const start = this.advance().start; // loop
+		const body = this.parseBlockExpr();
+		return { kind: 'Loop', start, end: body.end, body };
+	}
+
+	private parseFor(): Stmt {
+		const start = this.advance().start; // for
+		const nameTok = this.expect('Ident', undefined, 'loop variable name');
+		this.expect('Keyword', 'in');
+		const iter = this.tryParseExpr() ?? this.placeholderExpr();
+		const body = this.parseBlockExpr();
+		return {
+			kind: 'For',
+			start,
+			end: body.end,
+			varName: nameTok.text,
+			varRange: { start: nameTok.start, end: nameTok.end },
+			iter,
+			body
+		};
+	}
+
+	private parseTry(): Stmt {
+		const start = this.advance().start; // try
+		const body = this.parseBlockExpr();
+		this.expect('Keyword', 'catch');
+		let catchVar: string | null = null;
+		let catchVarRange: { start: number; end: number } | null = null;
+		if (this.match('Punct', '(')) {
+			if (this.check('Ident')) {
+				const id = this.advance();
+				catchVar = id.text;
+				catchVarRange = { start: id.start, end: id.end };
+			}
+			this.expect('Punct', ')');
+		}
+		const handler = this.parseBlockExpr();
+		return { kind: 'Try', start, end: handler.end, body, catchVar, catchVarRange, handler };
+	}
+
+	private parseBlockExpr(): BlockExpr {
+		const openTok = this.peek();
+		if (!this.match('Punct', '{')) {
+			this.error(openTok, "Expecting '{' to begin a block");
+			return { kind: 'BlockExpr', start: openTok.start, end: openTok.start, stmts: [] };
+		}
+		const start = openTok.start;
+		const stmts: Stmt[] = [];
+		while (!this.check('Punct', '}') && this.peek().kind !== 'EOF') {
+			const before = this.pos;
+			const s = this.parseStmt();
+			if (s) stmts.push(s);
+			else if (this.pos === before) this.advance();
+		}
+		const closeTok = this.peek();
+		this.match('Punct', '}');
+		return { kind: 'BlockExpr', start, end: closeTok.end, stmts };
+	}
+
+	// ---------------------------------------------------------- expressions
+
+	private tryParseExpr(): Expr | null {
+		const t = this.peek();
+		if (t.kind === 'EOF' || (t.kind === 'Punct' && (t.text === ';' || t.text === '}' || t.text === ')' || t.text === ']' || t.text === ','))) {
+			return null;
+		}
+		return this.parseAssign();
+	}
+
+	private parseAssign(): Expr {
+		const left = this.parseBinary(0);
+		const t = this.peek();
+		if (t.kind === 'Operator' && ASSIGN_OPS.has(t.text)) {
+			this.advance();
+			const right = this.parseAssign();
+			return { kind: 'Assign', start: left.start, end: right.end, op: t.text, target: left, value: right };
+		}
+		return left;
+	}
+
+	private parseBinary(minPrec: number): Expr {
+		let left = this.parseUnary();
+		while (true) {
+			const t = this.peek();
+			if (t.kind !== 'Operator') break;
+			const prec = BINARY_PRECEDENCE[t.text];
+			if (prec === undefined || prec < minPrec) break;
+			this.advance();
+			const right = this.parseBinary(prec + 1);
+			left = { kind: 'Binary', start: left.start, end: right.end, op: t.text, left, right };
+		}
+		return left;
+	}
+
+	private parseUnary(): Expr {
+		const t = this.peek();
+		if (t.kind === 'Operator' && UNARY_OPS.has(t.text)) {
+			this.advance();
+			const operand = this.parseUnary();
+			return { kind: 'Unary', start: t.start, end: operand.end, op: t.text, operand };
+		}
+		return this.parsePostfix(this.parsePrimary());
+	}
+
+	private parsePostfix(initial: Expr): Expr {
+		let expr = initial;
+		while (true) {
+			const t = this.peek();
+			if (t.kind === 'Punct' && t.text === '.') {
+				this.advance();
+				const prop = this.expect('Ident', undefined, 'name of a property');
+				expr = {
+					kind: 'Member',
+					start: expr.start,
+					end: prop.end,
+					object: expr,
+					property: prop.text,
+					propertyRange: { start: prop.start, end: prop.end }
+				};
+			} else if (t.kind === 'Punct' && t.text === '(') {
+				this.advance();
+				const args: Expr[] = [];
+				while (!this.check('Punct', ')') && this.peek().kind !== 'EOF') {
+					const a = this.tryParseExpr();
+					if (!a) break;
+					args.push(a);
+					if (!this.match('Punct', ',')) break;
+				}
+				const close = this.peek();
+				this.expect('Punct', ')');
+				expr = { kind: 'Call', start: expr.start, end: close.end, callee: expr, args };
+			} else if (t.kind === 'Punct' && t.text === '[') {
+				this.advance();
+				const idx = this.tryParseExpr() ?? this.placeholderExpr();
+				const close = this.peek();
+				this.expect('Punct', ']');
+				expr = { kind: 'Index', start: expr.start, end: close.end, object: expr, index: idx };
+			} else if (t.kind === 'Operator' && t.text === '::') {
+				// Namespace path: treat `log::info` as a Member chain on an
+				// Ident so completion and lookup can walk the same shape.
+				this.advance();
+				const next = this.expect('Ident', undefined, "name after '::'");
+				expr = {
+					kind: 'Member',
+					start: expr.start,
+					end: next.end,
+					object: expr,
+					property: next.text,
+					propertyRange: { start: next.start, end: next.end }
+				};
+			} else {
+				break;
+			}
+		}
+		return expr;
+	}
+
+	private parsePrimary(): Expr {
+		const t = this.peek();
+
+		// Literals
+		if (t.kind === 'Number') {
+			this.advance();
+			return { kind: 'Number', start: t.start, end: t.end, raw: t.text };
+		}
+		if (t.kind === 'String') {
+			this.advance();
+			const quote = t.text.charAt(0) === '`' ? '`' : '"';
+			return { kind: 'String', start: t.start, end: t.end, quote, raw: t.text };
+		}
+		if (t.kind === 'Keyword') {
+			if (t.text === 'true' || t.text === 'false') {
+				this.advance();
+				return { kind: 'Bool', start: t.start, end: t.end, value: t.text === 'true' };
+			}
+			if (t.text === 'null') {
+				this.advance();
+				return { kind: 'Null', start: t.start, end: t.end };
+			}
+			if (t.text === 'if') return this.parseIfExpr();
+			if (t.text === 'switch') return this.parseSwitchExpr();
+			if (t.text === 'fn') return this.parseFnExpr();
+		}
+
+		// Identifier
+		if (t.kind === 'Ident') {
+			this.advance();
+			return { kind: 'Ident', start: t.start, end: t.end, name: t.text };
+		}
+
+		// Paren expression
+		if (t.kind === 'Punct' && t.text === '(') {
+			this.advance();
+			const inner = this.tryParseExpr() ?? this.placeholderExpr();
+			const close = this.peek();
+			this.expect('Punct', ')');
+			return { kind: 'Paren', start: t.start, end: close.end, expr: inner };
+		}
+
+		// Array literal
+		if (t.kind === 'Punct' && t.text === '[') {
+			return this.parseArray();
+		}
+
+		// Object-map literal: `#{`
+		if (t.kind === 'Punct' && t.text === '#' && this.peek(1).kind === 'Punct' && this.peek(1).text === '{') {
+			return this.parseObjectMap();
+		}
+
+		// Block expression `{ ... }`
+		if (t.kind === 'Punct' && t.text === '{') {
+			return this.parseBlockExpr();
+		}
+
+		this.error(t, t.kind === 'EOF' ? 'Script is incomplete' : `Unexpected token '${t.text}'`);
+		// Consume one token so we make forward progress, then return a
+		// placeholder so the surrounding parser keeps its shape.
+		this.advance();
+		return this.placeholderExpr(t);
+	}
+
+	private parseIfExpr(): IfExpr {
+		const start = this.advance().start; // if
+		const cond = this.tryParseExpr() ?? this.placeholderExpr();
+		const thenB = this.parseBlockExpr();
+		let else_: BlockExpr | IfExpr | null = null;
+		if (this.match('Keyword', 'else')) {
+			if (this.check('Keyword', 'if')) {
+				else_ = this.parseIfExpr();
+			} else {
+				else_ = this.parseBlockExpr();
+			}
+		}
+		const end = else_ ? else_.end : thenB.end;
+		return { kind: 'IfExpr', start, end, cond, then: thenB, else_ };
+	}
+
+	private parseSwitchExpr(): Expr {
+		const start = this.advance().start; // switch
+		const subject = this.tryParseExpr() ?? this.placeholderExpr();
+		this.expect('Punct', '{');
+		const arms: SwitchArm[] = [];
+		while (!this.check('Punct', '}') && this.peek().kind !== 'EOF') {
+			const armStart = this.peek().start;
+			let pattern: Expr | null;
+			if (this.check('Operator', '_') || (this.peek().kind === 'Ident' && this.peek().text === '_')) {
+				this.advance();
+				pattern = null;
+			} else {
+				pattern = this.tryParseExpr() ?? this.placeholderExpr();
+			}
+			let guard: Expr | null = null;
+			if (this.match('Keyword', 'if')) {
+				guard = this.tryParseExpr() ?? this.placeholderExpr();
+			}
+			this.expect('Operator', '=>');
+			const value = this.tryParseExpr() ?? this.placeholderExpr();
+			arms.push({ start: armStart, end: value.end, pattern, guard, value });
+			if (!this.match('Punct', ',')) break;
+		}
+		const close = this.peek();
+		this.expect('Punct', '}');
+		return { kind: 'SwitchExpr', start, end: close.end, subject, arms };
+	}
+
+	private parseFnExpr(): Expr {
+		// `fn (params) { ... }` — anonymous function expression. Rare in
+		// Rhai but legal; some scripts use it for callbacks.
+		const start = this.advance().start; // fn
+		this.expect('Punct', '(');
+		const params: Param[] = [];
+		while (!this.check('Punct', ')') && this.peek().kind !== 'EOF') {
+			const pTok = this.expect('Ident', undefined, 'parameter name');
+			params.push({ name: pTok.text, start: pTok.start, end: pTok.end });
+			if (!this.match('Punct', ',')) break;
+		}
+		this.expect('Punct', ')');
+		const body = this.parseBlockExpr();
+		return { kind: 'FnExpr', start, end: body.end, params, body };
+	}
+
+	private parseArray(): Expr {
+		const start = this.advance().start; // [
+		const elements: Expr[] = [];
+		while (!this.check('Punct', ']') && this.peek().kind !== 'EOF') {
+			const e = this.tryParseExpr();
+			if (!e) break;
+			elements.push(e);
+			if (!this.match('Punct', ',')) break;
+		}
+		const close = this.peek();
+		this.expect('Punct', ']');
+		return { kind: 'Array', start, end: close.end, elements };
+	}
+
+	private parseObjectMap(): Expr {
+		const start = this.advance().start; // #
+		this.advance(); // {
+		const entries: ObjectMapEntry[] = [];
+		while (!this.check('Punct', '}') && this.peek().kind !== 'EOF') {
+			const k = this.peek();
+			let key: string;
+			let keyRange: { start: number; end: number };
+			if (k.kind === 'Ident' || k.kind === 'Keyword') {
+				this.advance();
+				key = k.text;
+				keyRange = { start: k.start, end: k.end };
+			} else if (k.kind === 'String') {
+				this.advance();
+				// Strip surrounding quotes for the key name (best-effort —
+				// we don't decode escape sequences; this is only used for
+				// completion labels).
+				key = k.text.length >= 2 ? k.text.slice(1, -1) : k.text;
+				keyRange = { start: k.start, end: k.end };
+			} else {
+				this.error(k, 'Expecting name of a map key');
+				break;
+			}
+			this.expect('Punct', ':');
+			const value = this.tryParseExpr() ?? this.placeholderExpr();
+			entries.push({ start: keyRange.start, end: value.end, key, keyRange, value });
+			if (!this.match('Punct', ',')) break;
+		}
+		const close = this.peek();
+		this.expect('Punct', '}');
+		return { kind: 'ObjectMap', start, end: close.end, entries };
+	}
+
+	private placeholderExpr(at?: Token): Expr {
+		const t = at ?? this.peek();
+		return { kind: 'Ident', start: t.start, end: t.start, name: '' };
+	}
+}

dashboard/src/lib/rhai/symbols.test.ts

@@ -0,0 +1,119 @@
+import { describe, it, expect } from 'vitest';
+import { parse } from './parser';
+import { buildSymbolTable } from './symbols';
+
+function build(src: string) {
+	const r = parse(src);
+	return { ...r, table: buildSymbolTable(r) };
+}
+
+describe('symbols — declarations and usages', () => {
+	it('captures let declarations', () => {
+		const { table } = build('let x = 1; x + 1;');
+		const x = table.allDecls.find((d) => d.name === 'x')!;
+		expect(x.kind).toBe('let');
+		expect(table.usages.find((u) => u.name === 'x')!.resolved).toBe(x);
+	});
+
+	it('records fn signatures for completion detail', () => {
+		const { table } = build('fn process(order, user) { order }');
+		const fn = table.allDecls.find((d) => d.name === 'process')!;
+		expect(fn.kind).toBe('fn');
+		expect(fn.signature).toBe('process(order, user)');
+	});
+
+	it('hoists fn declarations: calls above the decl resolve', () => {
+		const { table } = build('greet("world"); fn greet(s) { s }');
+		const u = table.usages.find((u) => u.name === 'greet')!;
+		expect(u.resolved?.kind).toBe('fn');
+	});
+
+	it('function bodies do not see outer locals', () => {
+		const { table } = build(`
+			let outer = 1;
+			fn f() { outer }
+		`);
+		const outerUse = table.usages.find((u) => u.name === 'outer')!;
+		expect(outerUse.resolved).toBeNull();
+	});
+
+	it('function bodies do see outer fn declarations', () => {
+		const { table } = build(`
+			fn helper() { 1 }
+			fn caller() { helper() }
+		`);
+		const helperUse = table.usages.find((u) => u.name === 'helper' && u.range.start > 30)!;
+		expect(helperUse.resolved?.kind).toBe('fn');
+	});
+
+	it('captures function parameters in their body scope', () => {
+		const { table } = build('fn f(a, b) { a + b }');
+		const a = table.allDecls.find((d) => d.name === 'a')!;
+		expect(a.kind).toBe('param');
+		const useOfA = table.usages.find((u) => u.name === 'a')!;
+		expect(useOfA.resolved).toBe(a);
+	});
+
+	it('captures for-loop binders', () => {
+		const { table } = build('for item in [1, 2, 3] { item }');
+		const item = table.allDecls.find((d) => d.name === 'item')!;
+		expect(item.kind).toBe('for');
+	});
+
+	it('respects forward-declaration: cannot use a let before its decl', () => {
+		const { table } = build('x; let x = 1;');
+		const earlyUse = table.usages.find((u) => u.name === 'x' && u.range.start < 5)!;
+		expect(earlyUse.resolved).toBeNull();
+	});
+});
+
+describe('symbols — object-literal field maps', () => {
+	it('records fields of an object-map literal initializer', () => {
+		const { table } = build('let order = #{ id: 1, total: 5 };');
+		const order = table.allDecls.find((d) => d.name === 'order')!;
+		expect(order.objectFields).toEqual(['id', 'total']);
+	});
+
+	it('objectFieldsOf returns the set after the declaration', () => {
+		const src = 'let order = #{ id: 1 }; order.id';
+		const { table } = build(src);
+		const afterDecl = src.indexOf('order.id') + 'order.'.length;
+		expect(table.objectFieldsOf('order', afterDecl)).toEqual(['id']);
+	});
+});
+
+describe('symbols — completion + navigation helpers', () => {
+	it('scopeCompletions surfaces in-scope locals and hoisted fns', () => {
+		const src = `
+			let outer = 1;
+			fn process(order) {
+				order
+			}
+		`;
+		const { table } = build(src);
+		const insideFn = src.indexOf('order\n');
+		const names = table.scopeCompletions(insideFn).map((d) => d.name);
+		expect(names).toContain('order');
+		expect(names).toContain('process');
+		// outer is not visible from inside `fn process`.
+		expect(names).not.toContain('outer');
+	});
+
+	it('declOfUsageAt resolves a usage to its declaration', () => {
+		const src = 'fn process(o) { o } process(1)';
+		const { table } = build(src);
+		const callPos = src.lastIndexOf('process');
+		const d = table.declOfUsageAt(callPos)!;
+		expect(d.name).toBe('process');
+		expect(d.kind).toBe('fn');
+	});
+
+	it('usagesOf collects declaration + every reference', () => {
+		const src = 'fn process(o) { o } process(1); process(2);';
+		const { table } = build(src);
+		const fn = table.allDecls.find((d) => d.name === 'process')!;
+		const all = table.usagesOf(fn);
+		// 1 decl name + 2 call sites = 3 ranges
+		expect(all).toHaveLength(3);
+	});
+});

dashboard/src/lib/rhai/symbols.ts

@@ -0,0 +1,447 @@
+// Symbol table built from the parsed AST.
+//
+// One walk produces everything the editor features need:
+//   * declarations (let, const, fn, params, for-loop binders, catch binder)
+//   * usages (every Ident reference, resolved by walking the scope chain)
+//   * object-literal field maps (so `obj.` can suggest known keys)
+//
+// Resolution rules (matching Rhai):
+//   * `fn` declarations live in the script-root scope regardless of where
+//     they appear textually. They form a flat namespace; nested functions
+//     are not allowed in standard Rhai.
+//   * A function body is a fresh scope that does NOT inherit the enclosing
+//     locals — Rhai's `fn` is a pure function, not a closure. It can
+//     still see top-level `fn`s (call them) but not top-level `let`s.
+//   * Blocks (if/while/loop/for/try) nest within their containing scope.
+//   * `let`/`const` are visible only after their declaration site within
+//     their scope.
+//
+// Known limit: object-literal field tracking is best-effort. We only
+// record fields at the literal-initialization site — `let o = #{ a: 1 };`.
+// Reassignments and member writes (`o.b = 2;`) don't update the field set.
+
+import type {
+	BlockExpr,
+	Comment,
+	Expr,
+	ForStmt,
+	FnDecl,
+	IfExpr,
+	ObjectMapExpr,
+	ParseResult,
+	Range,
+	Stmt,
+	SwitchExpr,
+	TryStmt
+} from './ast';
+
+export type DeclKind = 'let' | 'const' | 'fn' | 'param' | 'for' | 'catch';
+
+export interface Decl {
+	kind: DeclKind;
+	name: string;
+	nameRange: Range;
+	// For `fn`: rendered signature like `process(order, user)`.
+	signature?: string;
+	// For `let`/`const` initialized to an object-map literal — the field
+	// names at the literal site. Empty otherwise.
+	objectFields?: string[];
+	// Lexical visibility: the offset at which references can resolve to
+	// this declaration. For `let`/`const` it's just past the declaration;
+	// for `fn`, parameters, `for`, and `catch` binders it's the start of
+	// the scope they belong to.
+	visibleFrom: number;
+	scope: Scope;
+}
+
+export interface Usage {
+	name: string;
+	range: Range;
+	scope: Scope;
+	resolved: Decl | null;
+}
+
+export interface Scope {
+	id: number;
+	kind: 'root' | 'fn' | 'block';
+	// A scope's range covers the source span where its locals are
+	// reachable. For the root scope this is the whole document.
+	range: Range;
+	parent: Scope | null;
+	children: Scope[];
+	decls: Decl[];
+}
+
+export interface SymbolTable {
+	root: Scope;
+	allDecls: Decl[];
+	usages: Usage[];
+	// Public API used by the editor features.
+	declAt(pos: number): Decl | null;
+	declOfUsageAt(pos: number): Decl | null;
+	usagesOf(decl: Decl): Range[];
+	objectFieldsOf(name: string, atPos: number): string[];
+	scopeCompletions(atPos: number): Decl[];
+}
+
+export function buildSymbolTable(result: ParseResult): SymbolTable {
+	const builder = new Builder(result);
+	builder.walkProgram();
+	builder.resolveUsages();
+	return builder.finish();
+}
+
+// Cosmetic helper: format a function's signature for the completion
+// `detail` field. Kept here so the symbol table is the single source of
+// truth for "how a `fn` shows up in the UI".
+export function renderFnSignature(fn: FnDecl): string {
+	return `${fn.name}(${fn.params.map((p) => p.name).join(', ')})`;
+}
+
+class Builder {
+	allDecls: Decl[] = [];
+	usages: Usage[] = [];
+	root: Scope;
+	private currentScope: Scope;
+	private nextScopeId = 0;
+
+	constructor(private result: ParseResult) {
+		const span = { start: 0, end: result.source.length };
+		this.root = this.makeScope('root', span, null);
+		this.currentScope = this.root;
+	}
+
+	private makeScope(kind: Scope['kind'], range: Range, parent: Scope | null): Scope {
+		const s: Scope = { id: this.nextScopeId++, kind, range, parent, children: [], decls: [] };
+		if (parent) parent.children.push(s);
+		return s;
+	}
+
+	private declare(d: Decl): void {
+		this.currentScope.decls.push(d);
+		this.allDecls.push(d);
+	}
+
+	// ----------------------------------------------------------------- walk
+
+	walkProgram(): void {
+		// First pass: hoist `fn` decls into the root scope so calls anywhere
+		// in the file can resolve to them regardless of source order.
+		for (const stmt of this.result.program.stmts) {
+			if (stmt.kind === 'FnDecl') {
+				this.declare({
+					kind: 'fn',
+					name: stmt.name,
+					nameRange: stmt.nameRange,
+					signature: renderFnSignature(stmt),
+					visibleFrom: 0,
+					scope: this.root
+				});
+			}
+		}
+		// Second pass: walk statements normally. Skip re-declaring the
+		// already-hoisted fn names; just descend into their bodies.
+		for (const stmt of this.result.program.stmts) this.walkStmt(stmt);
+	}
+
+	private walkStmt(stmt: Stmt): void {
+		switch (stmt.kind) {
+			case 'Let':
+			case 'Const': {
+				if (stmt.init) this.walkExpr(stmt.init);
+				const objectFields =
+					stmt.init && stmt.init.kind === 'ObjectMap'
+						? (stmt.init as ObjectMapExpr).entries.map((e) => e.key)
+						: undefined;
+				this.declare({
+					kind: stmt.kind === 'Let' ? 'let' : 'const',
+					name: stmt.name,
+					nameRange: stmt.nameRange,
+					objectFields,
+					visibleFrom: stmt.nameRange.end,
+					scope: this.currentScope
+				});
+				return;
+			}
+			case 'FnDecl': {
+				const prev = this.currentScope;
+				const fnScope = this.makeScope('fn', stmt.body, prev);
+				this.currentScope = fnScope;
+				for (const p of stmt.params) {
+					this.declare({
+						kind: 'param',
+						name: p.name,
+						nameRange: { start: p.start, end: p.end },
+						visibleFrom: stmt.body.start,
+						scope: fnScope
+					});
+				}
+				for (const s of stmt.body.stmts) this.walkStmt(s);
+				this.currentScope = prev;
+				return;
+			}
+			case 'ExprStmt':
+				this.walkExpr(stmt.expr);
+				return;
+			case 'Return':
+				if (stmt.value) this.walkExpr(stmt.value);
+				return;
+			case 'While':
+				this.walkExpr(stmt.cond);
+				this.walkBlock(stmt.body);
+				return;
+			case 'Loop':
+				this.walkBlock(stmt.body);
+				return;
+			case 'For':
+				this.walkFor(stmt);
+				return;
+			case 'Try':
+				this.walkTry(stmt);
+				return;
+			case 'Break':
+			case 'Continue':
+				return;
+		}
+	}
+
+	private walkFor(stmt: ForStmt): void {
+		this.walkExpr(stmt.iter);
+		const prev = this.currentScope;
+		const blockScope = this.makeScope('block', stmt.body, prev);
+		this.currentScope = blockScope;
+		this.declare({
+			kind: 'for',
+			name: stmt.varName,
+			nameRange: stmt.varRange,
+			visibleFrom: stmt.body.start,
+			scope: blockScope
+		});
+		for (const s of stmt.body.stmts) this.walkStmt(s);
+		this.currentScope = prev;
+	}
+
+	private walkTry(stmt: TryStmt): void {
+		this.walkBlock(stmt.body);
+		const prev = this.currentScope;
+		const handlerScope = this.makeScope('block', stmt.handler, prev);
+		this.currentScope = handlerScope;
+		if (stmt.catchVar && stmt.catchVarRange) {
+			this.declare({
+				kind: 'catch',
+				name: stmt.catchVar,
+				nameRange: stmt.catchVarRange,
+				visibleFrom: stmt.handler.start,
+				scope: handlerScope
+			});
+		}
+		for (const s of stmt.handler.stmts) this.walkStmt(s);
+		this.currentScope = prev;
+	}
+
+	private walkBlock(block: BlockExpr): void {
+		const prev = this.currentScope;
+		const blockScope = this.makeScope('block', block, prev);
+		this.currentScope = blockScope;
+		for (const s of block.stmts) this.walkStmt(s);
+		this.currentScope = prev;
+	}
+
+	private walkExpr(expr: Expr): void {
+		switch (expr.kind) {
+			case 'Ident':
+				if (expr.name) {
+					this.usages.push({
+						name: expr.name,
+						range: { start: expr.start, end: expr.end },
+						scope: this.currentScope,
+						resolved: null
+					});
+				}
+				return;
+			case 'Number':
+			case 'String':
+			case 'Bool':
+			case 'Null':
+				return;
+			case 'Call':
+				this.walkExpr(expr.callee);
+				for (const a of expr.args) this.walkExpr(a);
+				return;
+			case 'Member':
+				this.walkExpr(expr.object);
+				// We don't record the property as a usage — it's resolved
+				// against the object's shape, not the lexical scope.
+				return;
+			case 'Index':
+				this.walkExpr(expr.object);
+				this.walkExpr(expr.index);
+				return;
+			case 'Unary':
+				this.walkExpr(expr.operand);
+				return;
+			case 'Binary':
+				this.walkExpr(expr.left);
+				this.walkExpr(expr.right);
+				return;
+			case 'Assign':
+				this.walkExpr(expr.target);
+				this.walkExpr(expr.value);
+				return;
+			case 'Paren':
+				this.walkExpr(expr.expr);
+				return;
+			case 'ObjectMap':
+				for (const e of expr.entries) this.walkExpr(e.value);
+				return;
+			case 'Array':
+				for (const e of expr.elements) this.walkExpr(e);
+				return;
+			case 'FnExpr': {
+				const prev = this.currentScope;
+				const fnScope = this.makeScope('fn', expr.body, prev);
+				this.currentScope = fnScope;
+				for (const p of expr.params) {
+					this.declare({
+						kind: 'param',
+						name: p.name,
+						nameRange: { start: p.start, end: p.end },
+						visibleFrom: expr.body.start,
+						scope: fnScope
+					});
+				}
+				for (const s of expr.body.stmts) this.walkStmt(s);
+				this.currentScope = prev;
+				return;
+			}
+			case 'IfExpr':
+				this.walkIf(expr);
+				return;
+			case 'SwitchExpr':
+				this.walkSwitch(expr);
+				return;
+			case 'BlockExpr':
+				this.walkBlock(expr);
+				return;
+		}
+	}
+
+	private walkIf(expr: IfExpr): void {
+		this.walkExpr(expr.cond);
+		this.walkBlock(expr.then);
+		if (expr.else_) {
+			if (expr.else_.kind === 'IfExpr') this.walkIf(expr.else_);
+			else this.walkBlock(expr.else_);
+		}
+	}
+
+	private walkSwitch(expr: SwitchExpr): void {
+		this.walkExpr(expr.subject);
+		for (const arm of expr.arms) {
+			if (arm.pattern) this.walkExpr(arm.pattern);
+			if (arm.guard) this.walkExpr(arm.guard);
+			this.walkExpr(arm.value);
+		}
+	}
+
+	// ----------------------------------------------------------- resolution
+
+	resolveUsages(): void {
+		for (const u of this.usages) {
+			u.resolved = this.resolveName(u.name, u.range.start, u.scope);
+		}
+	}
+
+	private resolveName(name: string, atPos: number, fromScope: Scope): Decl | null {
+		let scope: Scope | null = fromScope;
+		let crossedFn = false;
+		while (scope) {
+			for (const d of scope.decls) {
+				if (d.name !== name) continue;
+				// Function scopes don't see outer locals — only the root's
+				// `fn` decls. So once we've crossed a fn boundary, accept
+				// only `fn` declarations.
+				if (crossedFn && d.kind !== 'fn') continue;
+				if (d.visibleFrom <= atPos) return d;
+			}
+			if (scope.kind === 'fn') crossedFn = true;
+			scope = scope.parent;
+		}
+		return null;
+	}
+
+	// --------------------------------------------------------------- finish
+
+	finish(): SymbolTable {
+		const { allDecls, usages, root } = this;
+
+		const declAt = (pos: number): Decl | null => {
+			let best: Decl | null = null;
+			for (const d of allDecls) {
+				if (pos >= d.nameRange.start && pos <= d.nameRange.end) {
+					best = d;
+				}
+			}
+			return best;
+		};
+
+		const findScopeAt = (pos: number, scope: Scope = root): Scope => {
+			for (const c of scope.children) {
+				if (pos >= c.range.start && pos <= c.range.end) {
+					return findScopeAt(pos, c);
+				}
+			}
+			return scope;
+		};
+
+		const declOfUsageAt = (pos: number): Decl | null => {
+			const direct = declAt(pos);
+			if (direct) return direct;
+			for (const u of usages) {
+				if (pos >= u.range.start && pos <= u.range.end) return u.resolved;
+			}
+			return null;
+		};
+
+		const usagesOf = (decl: Decl): Range[] => {
+			const out: Range[] = [{ start: decl.nameRange.start, end: decl.nameRange.end }];
+			for (const u of usages) {
+				if (u.resolved === decl) out.push({ start: u.range.start, end: u.range.end });
+			}
+			out.sort((a, b) => a.start - b.start);
+			return out;
+		};
+
+		const objectFieldsOf = (name: string, atPos: number): string[] => {
+			const fromScope = findScopeAt(atPos);
+			const d = (this as Builder).resolveName(name, atPos, fromScope);
+			return d?.objectFields ?? [];
+		};
+
+		const scopeCompletions = (atPos: number): Decl[] => {
+			const seen = new Set<string>();
+			const out: Decl[] = [];
+			let scope: Scope | null = findScopeAt(atPos);
+			let crossedFn = false;
+			while (scope) {
+				for (const d of scope.decls) {
+					if (seen.has(d.name)) continue;
+					if (crossedFn && d.kind !== 'fn') continue;
+					if (d.visibleFrom > atPos) continue;
+					seen.add(d.name);
+					out.push(d);
+				}
+				if (scope.kind === 'fn') crossedFn = true;
+				scope = scope.parent;
+			}
+			return out;
+		};
+
+		return { root, allDecls, usages, declAt, declOfUsageAt, usagesOf, objectFieldsOf, scopeCompletions };
+	}
+}
+
+// Used by symbols.test.ts; harmless to export.
+export function commentsAt(comments: Comment[], pos: number): Comment | undefined {
+	return comments.find((c) => pos >= c.start && pos < c.end);
+}

dashboard/src/routes/+layout.svelte

@@ -1,6 +1,44 @@
 <script lang="ts">
 	import { base } from '$app/paths';
+	import { goto } from '$app/navigation';
+	import { onMount } from 'svelte';
+	import { page } from '$app/state';
+	import { api } from '$lib/api';
+	import { currentUser, getToken } from '$lib/auth';
+
 	let { children } = $props();
+
+	let booting = $state(true);
+	const user = $derived($currentUser);
+
+	const isLoginRoute = $derived(page.url.pathname.endsWith('/login'));
+
+	onMount(async () => {
+		// Hydrate the session: if there's a token, ask the server who we
+		// are. On 401 the fetch wrapper already redirects to /login and
+		// clears state; on success we land in the SPA fully signed in.
+		const tok = getToken();
+		if (!tok) {
+			if (!isLoginRoute) {
+				await goto(`${base}/login`);
+			}
+			booting = false;
+			return;
+		}
+		try {
+			const me = await api.auth.me();
+			currentUser.set(me);
+		} catch {
+			// adminRequest handles 401 redirects. For other errors fall
+			// through — the page will surface its own error state.
+		}
+		booting = false;
+	});
+
+	async function handleLogout() {
+		await api.auth.logout();
+		await goto(`${base}/login`);
+	}
 </script>
 
 <div class="shell">
@@ -8,10 +46,22 @@
 		<a href={base + '/'} class="brand">PiCloud</a>
 		<nav>
 			<a href={base + '/'}>Scripts</a>
+			<a href={base + '/admins'}>Admins</a>
 		</nav>
+		<div class="spacer"></div>
+		{#if user}
+			<div class="usermenu">
+				<span class="username">{user.username}</span>
+				<button type="button" class="logout" onclick={handleLogout}>Logout</button>
+			</div>
+		{/if}
 	</header>
 	<main>
+		{#if booting}
+			<p class="boot">Loading…</p>
+		{:else}
 			{@render children?.()}
+		{/if}
 	</main>
 </div>
 
@@ -45,6 +95,11 @@
 		text-decoration: none;
 	}
 
+	nav {
+		display: flex;
+		gap: 1.5rem;
+	}
+
 	nav a {
 		color: #94a3b8;
 		text-decoration: none;
@@ -55,6 +110,36 @@
 		color: #e2e8f0;
 	}
 
+	.spacer {
+		flex: 1;
+	}
+
+	.usermenu {
+		display: flex;
+		align-items: center;
+		gap: 0.75rem;
+		font-size: 0.875rem;
+	}
+
+	.username {
+		color: #cbd5e1;
+	}
+
+	.logout {
+		background: transparent;
+		color: #94a3b8;
+		border: 1px solid #334155;
+		padding: 0.35rem 0.75rem;
+		border-radius: 0.375rem;
+		cursor: pointer;
+		font-size: 0.8rem;
+	}
+
+	.logout:hover {
+		background: #1e293b;
+		color: #e2e8f0;
+	}
+
 	main {
 		flex: 1;
 		padding: 2rem;
@@ -63,4 +148,8 @@
 		margin: 0 auto;
 		box-sizing: border-box;
 	}
+
+	.boot {
+		color: #64748b;
+	}
 </style>

dashboard/src/routes/+page.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
 	import { base } from '$app/paths';
 	import { api, ApiError, type Script } from '$lib/api';
+	import CodeEditor from '$lib/CodeEditor.svelte';
 
 	const SAMPLE_SOURCE = '#{\n  statusCode: 200,\n  body: #{ ok: true, echo: ctx.request.body }\n}';
 
@@ -80,7 +81,7 @@
 			</div>
 			<label class="full">
 				<span>Source (Rhai)</span>
-				<textarea bind:value={createSource} rows="10" spellcheck="false"></textarea>
+				<CodeEditor bind:value={createSource} language="rhai" minHeight="14rem" />
 			</label>
 			{#if createError}
 				<div class="error">{createError}</div>
@@ -191,8 +192,7 @@
 		grid-column: 1 / -1;
 	}
 
-	.create-form input,
-	.create-form textarea {
+	.create-form input {
 		background: #0b1220;
 		color: #e2e8f0;
 		border: 1px solid #334155;
@@ -201,13 +201,6 @@
 		font: inherit;
 	}
 
-	.create-form textarea {
-		font-family:
-			ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;
-		min-height: 8rem;
-		resize: vertical;
-	}
-
 	.actions {
 		display: flex;
 		justify-content: flex-end;

dashboard/src/routes/admins/+page.svelte

@@ -0,0 +1,687 @@
+<script lang="ts">
+	import { goto } from '$app/navigation';
+	import { base } from '$app/paths';
+	import { onMount } from 'svelte';
+	import { api, ApiError, type AdminUserRecord } from '$lib/api';
+	import { currentUser } from '$lib/auth';
+
+	let admins = $state<AdminUserRecord[]>([]);
+	let loadError = $state<string | null>(null);
+	let banner = $state<{ kind: 'error' | 'info'; message: string } | null>(null);
+
+	const me = $derived($currentUser);
+
+	let createOpen = $state(false);
+	let createForm = $state({ username: '', password: '', confirm: '' });
+	let createPending = $state(false);
+	let createError = $state<string | null>(null);
+
+	let passwordTarget = $state<AdminUserRecord | null>(null);
+	let passwordForm = $state({ password: '', confirm: '' });
+	let passwordPending = $state(false);
+	let passwordError = $state<string | null>(null);
+
+	let deleteTarget = $state<AdminUserRecord | null>(null);
+	let deletePending = $state(false);
+
+	let actionsOpenFor = $state<string | null>(null);
+
+	onMount(refresh);
+
+	async function refresh() {
+		loadError = null;
+		try {
+			admins = await api.admins.list();
+		} catch (e) {
+			loadError = e instanceof ApiError ? e.message : 'failed to load admins';
+		}
+	}
+
+	function flash(kind: 'error' | 'info', message: string) {
+		banner = { kind, message };
+		setTimeout(() => {
+			if (banner?.message === message) banner = null;
+		}, 6000);
+	}
+
+	function openCreate() {
+		createForm = { username: '', password: '', confirm: '' };
+		createError = null;
+		createOpen = true;
+	}
+
+	async function submitCreate(event: SubmitEvent) {
+		event.preventDefault();
+		createError = null;
+		if (createForm.password !== createForm.confirm) {
+			createError = 'Passwords do not match';
+			return;
+		}
+		createPending = true;
+		try {
+			await api.admins.create({
+				username: createForm.username.trim(),
+				password: createForm.password
+			});
+			createOpen = false;
+			await refresh();
+			flash('info', `Created admin "${createForm.username.trim()}".`);
+		} catch (e) {
+			createError = e instanceof ApiError ? e.message : 'failed to create admin';
+		} finally {
+			createPending = false;
+		}
+	}
+
+	function openPassword(row: AdminUserRecord) {
+		passwordTarget = row;
+		passwordForm = { password: '', confirm: '' };
+		passwordError = null;
+		actionsOpenFor = null;
+	}
+
+	async function submitPassword(event: SubmitEvent) {
+		event.preventDefault();
+		if (!passwordTarget) return;
+		passwordError = null;
+		if (passwordForm.password !== passwordForm.confirm) {
+			passwordError = 'Passwords do not match';
+			return;
+		}
+		passwordPending = true;
+		try {
+			await api.admins.update(passwordTarget.id, { password: passwordForm.password });
+			const name = passwordTarget.username;
+			passwordTarget = null;
+			flash('info', `Password updated for "${name}".`);
+		} catch (e) {
+			passwordError = e instanceof ApiError ? e.message : 'failed to update password';
+		} finally {
+			passwordPending = false;
+		}
+	}
+
+	async function toggleActive(row: AdminUserRecord) {
+		actionsOpenFor = null;
+		try {
+			const updated = await api.admins.update(row.id, { is_active: !row.is_active });
+			admins = admins.map((a) => (a.id === updated.id ? updated : a));
+			flash('info', `${updated.username} ${updated.is_active ? 'reactivated' : 'deactivated'}.`);
+		} catch (e) {
+			flash('error', e instanceof ApiError ? e.message : 'failed to update admin');
+		}
+	}
+
+	function openDelete(row: AdminUserRecord) {
+		deleteTarget = row;
+		actionsOpenFor = null;
+	}
+
+	async function confirmDelete() {
+		if (!deleteTarget) return;
+		deletePending = true;
+		const target = deleteTarget;
+		try {
+			await api.admins.remove(target.id);
+			deleteTarget = null;
+			if (me && me.id === target.id) {
+				// Just deleted ourselves — sign out and bounce.
+				await api.auth.logout();
+				await goto(`${base}/login`);
+				return;
+			}
+			await refresh();
+			flash('info', `Deleted "${target.username}".`);
+		} catch (e) {
+			flash('error', e instanceof ApiError ? e.message : 'failed to delete admin');
+		} finally {
+			deletePending = false;
+		}
+	}
+
+	function toggleActions(id: string) {
+		actionsOpenFor = actionsOpenFor === id ? null : id;
+	}
+
+	function relative(iso: string | null): string {
+		if (!iso) return 'Never';
+		const then = new Date(iso).getTime();
+		const now = Date.now();
+		const sec = Math.round((now - then) / 1000);
+		if (sec < 60) return `${sec} second${sec === 1 ? '' : 's'} ago`;
+		const min = Math.round(sec / 60);
+		if (min < 60) return `${min} minute${min === 1 ? '' : 's'} ago`;
+		const hr = Math.round(min / 60);
+		if (hr < 24) return `${hr} hour${hr === 1 ? '' : 's'} ago`;
+		const day = Math.round(hr / 24);
+		if (day === 1) return 'Yesterday';
+		if (day < 7) return `${day} days ago`;
+		return new Date(iso).toLocaleDateString();
+	}
+
+	function absolute(iso: string | null): string {
+		return iso ? new Date(iso).toISOString() : '';
+	}
+
+	function shortDate(iso: string): string {
+		return new Date(iso).toISOString().slice(0, 10);
+	}
+</script>
+
+<header class="head">
+	<h1>Admin Users</h1>
+	<button type="button" class="primary" onclick={openCreate}>+ New admin user</button>
+</header>
+
+{#if banner}
+	<div class="banner banner-{banner.kind}">{banner.message}</div>
+{/if}
+
+{#if loadError}
+	<div class="error">
+		{loadError}
+		<button type="button" class="retry" onclick={refresh}>Retry</button>
+	</div>
+{:else if admins.length === 0}
+	<p class="empty">No admin users yet. Add one to get started.</p>
+{:else}
+	<div class="table">
+		<div class="row head-row">
+			<div>Username</div>
+			<div>Status</div>
+			<div>Created</div>
+			<div>Last login</div>
+			<div class="actions-col"></div>
+		</div>
+		{#each admins as row (row.id)}
+			<div class="row">
+				<div class="username-cell">
+					<span class="name">{row.username}</span>
+					{#if me && me.id === row.id}
+						<span class="you-tag">(you)</span>
+					{/if}
+				</div>
+				<div>
+					{#if row.is_active}
+						<span class="status status-active">● Active</span>
+					{:else}
+						<span class="status status-inactive">○ Inactive</span>
+					{/if}
+				</div>
+				<div>{shortDate(row.created_at)}</div>
+				<div title={absolute(row.last_login_at)}>{relative(row.last_login_at)}</div>
+				<div class="actions-col">
+					<button
+						type="button"
+						class="kebab"
+						aria-label="Actions for {row.username}"
+						onclick={() => toggleActions(row.id)}
+					>
+						⋮
+					</button>
+					{#if actionsOpenFor === row.id}
+						<div class="menu">
+							<button type="button" onclick={() => openPassword(row)}>Change password</button>
+							<button type="button" onclick={() => toggleActive(row)}>
+								{row.is_active ? 'Deactivate' : 'Reactivate'}
+							</button>
+							<button type="button" class="danger" onclick={() => openDelete(row)}>Delete</button>
+						</div>
+					{/if}
+				</div>
+			</div>
+		{/each}
+	</div>
+{/if}
+
+<!-- New admin modal -->
+{#if createOpen}
+	<div
+		class="modal-backdrop"
+		role="presentation"
+		onclick={(e) => {
+			if (e.target === e.currentTarget) createOpen = false;
+		}}
+	>
+		<form class="modal" onsubmit={submitCreate}>
+			<div class="modal-head">
+				<h2>New admin user</h2>
+				<button
+					type="button"
+					class="x"
+					aria-label="Close"
+					onclick={() => (createOpen = false)}>✕</button
+				>
+			</div>
+			<label>
+				<span>Username</span>
+				<input
+					type="text"
+					autocomplete="off"
+					spellcheck="false"
+					bind:value={createForm.username}
+					required
+				/>
+				<small>Lowercase letters, digits, . _ -</small>
+			</label>
+			<label>
+				<span>Password</span>
+				<input
+					type="password"
+					autocomplete="new-password"
+					bind:value={createForm.password}
+					required
+				/>
+				<small>Minimum 8 characters</small>
+			</label>
+			<label>
+				<span>Confirm password</span>
+				<input
+					type="password"
+					autocomplete="new-password"
+					bind:value={createForm.confirm}
+					required
+				/>
+			</label>
+			{#if createError}
+				<div class="error">{createError}</div>
+			{/if}
+			<div class="modal-actions">
+				<button type="button" class="ghost" onclick={() => (createOpen = false)}>Cancel</button>
+				<button type="submit" class="primary" disabled={createPending}>
+					{createPending ? 'Creating…' : 'Create user'}
+				</button>
+			</div>
+		</form>
+	</div>
+{/if}
+
+<!-- Change password modal -->
+{#if passwordTarget}
+	<div
+		class="modal-backdrop"
+		role="presentation"
+		onclick={(e) => {
+			if (e.target === e.currentTarget) passwordTarget = null;
+		}}
+	>
+		<form class="modal" onsubmit={submitPassword}>
+			<div class="modal-head">
+				<h2>Change password — {passwordTarget.username}</h2>
+				<button type="button" class="x" aria-label="Close" onclick={() => (passwordTarget = null)}
+					>✕</button
+				>
+			</div>
+			<label>
+				<span>New password</span>
+				<input
+					type="password"
+					autocomplete="new-password"
+					bind:value={passwordForm.password}
+					required
+				/>
+			</label>
+			<label>
+				<span>Confirm password</span>
+				<input
+					type="password"
+					autocomplete="new-password"
+					bind:value={passwordForm.confirm}
+					required
+				/>
+			</label>
+			{#if passwordError}
+				<div class="error">{passwordError}</div>
+			{/if}
+			<div class="modal-actions">
+				<button type="button" class="ghost" onclick={() => (passwordTarget = null)}>Cancel</button>
+				<button type="submit" class="primary" disabled={passwordPending}>
+					{passwordPending ? 'Updating…' : 'Update'}
+				</button>
+			</div>
+		</form>
+	</div>
+{/if}
+
+<!-- Delete confirmation modal -->
+{#if deleteTarget}
+	<div
+		class="modal-backdrop"
+		role="presentation"
+		onclick={(e) => {
+			if (e.target === e.currentTarget) deleteTarget = null;
+		}}
+	>
+		<div class="modal">
+			<div class="modal-head">
+				<h2>Delete {deleteTarget.username}?</h2>
+				<button type="button" class="x" aria-label="Close" onclick={() => (deleteTarget = null)}
+					>✕</button
+				>
+			</div>
+			{#if me && me.id === deleteTarget.id}
+				<p>
+					You are about to delete <strong>your own</strong> account. You will be signed out immediately
+					and will not be able to sign back in with these credentials.
+				</p>
+			{:else}
+				<p>
+					This permanently removes <strong>{deleteTarget.username}</strong> and all their sessions.
+					This cannot be undone.
+				</p>
+			{/if}
+			<div class="modal-actions">
+				<button type="button" class="ghost" onclick={() => (deleteTarget = null)}>Cancel</button>
+				<button type="button" class="danger" disabled={deletePending} onclick={confirmDelete}>
+					{deletePending ? 'Deleting…' : 'Delete'}
+				</button>
+			</div>
+		</div>
+	</div>
+{/if}
+
+<style>
+	.head {
+		display: flex;
+		align-items: center;
+		justify-content: space-between;
+		margin-bottom: 1.5rem;
+	}
+
+	h1 {
+		font-size: 1.25rem;
+		margin: 0;
+		color: #e2e8f0;
+	}
+
+	.banner {
+		padding: 0.5rem 0.75rem;
+		border-radius: 0.375rem;
+		margin-bottom: 1rem;
+		font-size: 0.85rem;
+	}
+	.banner-error {
+		background: #450a0a;
+		border: 1px solid #b91c1c;
+		color: #fecaca;
+	}
+	.banner-info {
+		background: #0c2a36;
+		border: 1px solid #155e75;
+		color: #a5f3fc;
+	}
+
+	.empty {
+		color: #64748b;
+		text-align: center;
+		padding: 3rem 0;
+		border: 1px dashed #1e293b;
+		border-radius: 0.5rem;
+	}
+
+	.table {
+		display: flex;
+		flex-direction: column;
+		border: 1px solid #1e293b;
+		border-radius: 0.5rem;
+		overflow: visible;
+		background: #0b1220;
+	}
+
+	.row {
+		display: grid;
+		grid-template-columns: 1.5fr 0.9fr 1fr 1.2fr 3rem;
+		align-items: center;
+		gap: 1rem;
+		padding: 0.75rem 1rem;
+		border-bottom: 1px solid #1e293b;
+		font-size: 0.9rem;
+	}
+
+	.row:last-child {
+		border-bottom: none;
+	}
+
+	.head-row {
+		color: #94a3b8;
+		font-size: 0.75rem;
+		text-transform: uppercase;
+		letter-spacing: 0.05em;
+		background: #0f172a;
+	}
+
+	.username-cell {
+		display: flex;
+		align-items: baseline;
+		gap: 0.5rem;
+	}
+
+	.name {
+		color: #e2e8f0;
+		font-weight: 500;
+	}
+
+	.you-tag {
+		color: #64748b;
+		font-size: 0.75rem;
+	}
+
+	.status {
+		font-size: 0.8rem;
+	}
+	.status-active {
+		color: #34d399;
+	}
+	.status-inactive {
+		color: #64748b;
+	}
+
+	.actions-col {
+		position: relative;
+		display: flex;
+		justify-content: flex-end;
+	}
+
+	.kebab {
+		background: transparent;
+		border: none;
+		color: #94a3b8;
+		font-size: 1.25rem;
+		cursor: pointer;
+		padding: 0 0.5rem;
+		border-radius: 0.25rem;
+	}
+	.kebab:hover {
+		background: #1e293b;
+		color: #e2e8f0;
+	}
+
+	.menu {
+		position: absolute;
+		top: 100%;
+		right: 0;
+		background: #0b1220;
+		border: 1px solid #1e293b;
+		border-radius: 0.375rem;
+		display: flex;
+		flex-direction: column;
+		min-width: 12rem;
+		z-index: 10;
+		box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
+	}
+
+	.menu button {
+		background: transparent;
+		border: none;
+		color: #cbd5e1;
+		text-align: left;
+		padding: 0.5rem 0.75rem;
+		cursor: pointer;
+		font-size: 0.85rem;
+	}
+	.menu button:hover {
+		background: #1e293b;
+		color: #e2e8f0;
+	}
+	.menu button.danger {
+		color: #fca5a5;
+	}
+	.menu button.danger:hover {
+		background: #450a0a;
+		color: #fecaca;
+	}
+
+	.error {
+		background: #450a0a;
+		border: 1px solid #b91c1c;
+		color: #fecaca;
+		padding: 0.5rem 0.75rem;
+		border-radius: 0.375rem;
+		font-size: 0.85rem;
+		display: flex;
+		align-items: center;
+		justify-content: space-between;
+		gap: 1rem;
+	}
+
+	.retry {
+		background: transparent;
+		border: 1px solid #b91c1c;
+		color: #fecaca;
+		padding: 0.25rem 0.6rem;
+		border-radius: 0.25rem;
+		cursor: pointer;
+		font-size: 0.75rem;
+	}
+
+	button.primary {
+		background: #38bdf8;
+		color: #0b1220;
+		border: none;
+		padding: 0.55rem 0.9rem;
+		border-radius: 0.375rem;
+		font-weight: 600;
+		cursor: pointer;
+		font-size: 0.875rem;
+	}
+	button.primary:disabled {
+		opacity: 0.6;
+		cursor: not-allowed;
+	}
+
+	button.ghost {
+		background: transparent;
+		color: #94a3b8;
+		border: 1px solid #334155;
+		padding: 0.5rem 0.9rem;
+		border-radius: 0.375rem;
+		cursor: pointer;
+		font-size: 0.875rem;
+	}
+	button.ghost:hover {
+		background: #1e293b;
+		color: #e2e8f0;
+	}
+
+	button.danger {
+		background: #b91c1c;
+		color: #fef2f2;
+		border: none;
+		padding: 0.55rem 0.9rem;
+		border-radius: 0.375rem;
+		cursor: pointer;
+		font-weight: 600;
+		font-size: 0.875rem;
+	}
+	button.danger:disabled {
+		opacity: 0.6;
+		cursor: not-allowed;
+	}
+
+	.modal-backdrop {
+		position: fixed;
+		inset: 0;
+		background: rgba(15, 23, 42, 0.7);
+		display: flex;
+		justify-content: center;
+		align-items: center;
+		z-index: 50;
+	}
+
+	.modal {
+		background: #0b1220;
+		border: 1px solid #1e293b;
+		border-radius: 0.5rem;
+		padding: 1.5rem;
+		min-width: 24rem;
+		max-width: 28rem;
+		display: flex;
+		flex-direction: column;
+		gap: 1rem;
+		box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
+	}
+
+	.modal-head {
+		display: flex;
+		align-items: center;
+		justify-content: space-between;
+	}
+
+	.modal h2 {
+		margin: 0;
+		font-size: 1rem;
+		color: #e2e8f0;
+	}
+
+	.x {
+		background: transparent;
+		border: none;
+		color: #64748b;
+		font-size: 1.1rem;
+		cursor: pointer;
+	}
+	.x:hover {
+		color: #e2e8f0;
+	}
+
+	.modal label {
+		display: flex;
+		flex-direction: column;
+		gap: 0.4rem;
+		font-size: 0.85rem;
+		color: #cbd5e1;
+	}
+
+	.modal label small {
+		color: #64748b;
+		font-size: 0.75rem;
+	}
+
+	.modal input {
+		background: #0f172a;
+		color: #e2e8f0;
+		border: 1px solid #1e293b;
+		border-radius: 0.375rem;
+		padding: 0.55rem 0.75rem;
+		font-size: 0.9rem;
+		box-sizing: border-box;
+	}
+	.modal input:focus {
+		outline: none;
+		border-color: #38bdf8;
+	}
+
+	.modal-actions {
+		display: flex;
+		justify-content: flex-end;
+		gap: 0.75rem;
+		margin-top: 0.5rem;
+	}
+
+	p {
+		color: #cbd5e1;
+		font-size: 0.9rem;
+		margin: 0;
+		line-height: 1.5;
+	}
+</style>

dashboard/src/routes/login/+page.svelte

@@ -0,0 +1,172 @@
+<script lang="ts">
+	import { base } from '$app/paths';
+	import { goto } from '$app/navigation';
+	import { onMount } from 'svelte';
+	import { api, ApiError } from '$lib/api';
+	import { getToken } from '$lib/auth';
+
+	let username = $state('');
+	let password = $state('');
+	let pending = $state(false);
+	let error = $state<string | null>(null);
+
+	onMount(async () => {
+		// Already signed in? Skip the form.
+		if (!getToken()) return;
+		try {
+			await api.auth.me();
+			await goto(`${base}/`);
+		} catch {
+			// stale token; let the form render
+		}
+	});
+
+	async function submit(event: SubmitEvent) {
+		event.preventDefault();
+		error = null;
+		pending = true;
+		try {
+			await api.auth.login(username, password);
+			await goto(`${base}/`);
+		} catch (e) {
+			error = e instanceof ApiError ? e.message : 'Login failed';
+		} finally {
+			pending = false;
+		}
+	}
+</script>
+
+<div class="login-shell">
+	<form class="card" onsubmit={submit}>
+		<h1>PiCloud</h1>
+		<p class="sub">Admin sign-in</p>
+		<label>
+			<span>Username</span>
+			<input
+				name="username"
+				type="text"
+				autocomplete="username"
+				autocapitalize="off"
+				spellcheck="false"
+				bind:value={username}
+				required
+			/>
+		</label>
+		<label>
+			<span>Password</span>
+			<input
+				name="password"
+				type="password"
+				autocomplete="current-password"
+				bind:value={password}
+				required
+			/>
+		</label>
+		<button type="submit" disabled={pending}>
+			{pending ? 'Signing in…' : 'Sign in →'}
+		</button>
+		{#if error}
+			<div class="error">{error}</div>
+		{/if}
+		<p class="hint">
+			Lost access? Run <code>picloud admin reset-password &lt;username&gt;</code> on the host.
+		</p>
+	</form>
+</div>
+
+<style>
+	.login-shell {
+		display: flex;
+		justify-content: center;
+		align-items: center;
+		min-height: 60vh;
+	}
+
+	.card {
+		display: flex;
+		flex-direction: column;
+		gap: 1rem;
+		background: #0b1220;
+		border: 1px solid #1e293b;
+		border-radius: 0.5rem;
+		padding: 2rem;
+		min-width: 22rem;
+		max-width: 26rem;
+	}
+
+	h1 {
+		margin: 0;
+		font-size: 1.5rem;
+		color: #38bdf8;
+		text-align: center;
+	}
+
+	.sub {
+		margin: 0 0 0.5rem 0;
+		text-align: center;
+		color: #94a3b8;
+		font-size: 0.9rem;
+	}
+
+	label {
+		display: flex;
+		flex-direction: column;
+		gap: 0.4rem;
+		font-size: 0.85rem;
+		color: #cbd5e1;
+	}
+
+	input {
+		background: #0f172a;
+		color: #e2e8f0;
+		border: 1px solid #1e293b;
+		border-radius: 0.375rem;
+		padding: 0.6rem 0.75rem;
+		font-size: 0.95rem;
+		box-sizing: border-box;
+	}
+
+	input:focus {
+		outline: none;
+		border-color: #38bdf8;
+	}
+
+	button {
+		background: #38bdf8;
+		color: #0b1220;
+		border: none;
+		padding: 0.65rem 1rem;
+		border-radius: 0.375rem;
+		font-weight: 600;
+		cursor: pointer;
+		font-size: 0.95rem;
+	}
+
+	button:disabled {
+		opacity: 0.6;
+		cursor: not-allowed;
+	}
+
+	.error {
+		background: #450a0a;
+		border: 1px solid #b91c1c;
+		color: #fecaca;
+		padding: 0.5rem 0.75rem;
+		border-radius: 0.375rem;
+		font-size: 0.85rem;
+	}
+
+	.hint {
+		margin: 0;
+		font-size: 0.75rem;
+		color: #64748b;
+		text-align: center;
+	}
+
+	code {
+		background: #1e293b;
+		padding: 0.1rem 0.35rem;
+		border-radius: 0.25rem;
+		color: #cbd5e1;
+	}
+</style>

dashboard/src/routes/scripts/[id]/+page.svelte

@@ -13,6 +13,19 @@
 	} from '$lib/api';
 	import { logLevelColor, statusColor } from '$lib/styles';
 	import { guessHostKind, guessPathKind, pathKindMismatchWarning } from '$lib/route-utils';
+	import CodeEditor from '$lib/CodeEditor.svelte';
+	import { format as formatRhai } from '$lib/rhai';
+
+	/// Pretty-print a JSON string in place, leaving it untouched if the
+	/// input doesn't parse. The error state is shown next to the button
+	/// so users see why it didn't reformat.
+	function formatJson(s: string): { ok: true; text: string } | { ok: false; error: string } {
+		try {
+			return { ok: true, text: JSON.stringify(JSON.parse(s), null, 2) };
+		} catch (e) {
+			return { ok: false, error: e instanceof Error ? e.message : String(e) };
+		}
+	}
 
 	// Route is `/scripts/[id]` so `page.params.id` is always present.
 	let id = $derived(page.params.id ?? '');
@@ -55,6 +68,17 @@
 	let editableSource = $state('');
 	let savingSource = $state(false);
 	let saveSourceError = $state<string | null>(null);
+	let rhaiFormatError = $state<string | null>(null);
+
+	function formatRhaiSource() {
+		const r = formatRhai(editableSource);
+		if (r.ok) {
+			editableSource = r.text;
+			rhaiFormatError = null;
+		} else {
+			rhaiFormatError = `Parse error: ${r.error.message} (line ${r.error.line}, position ${r.error.column})`;
+		}
+	}
 
 	async function saveSource() {
 		if (!script) return;
@@ -72,7 +96,28 @@
 
 	let testBody = $state('{}');
 	let testHeaders = $state('{}');
+	let testBodyFormatError = $state<string | null>(null);
+	let testHeadersFormatError = $state<string | null>(null);
 	let testInProgress = $state(false);
+
+	function formatTestBody() {
+		const r = formatJson(testBody);
+		if (r.ok) {
+			testBody = r.text;
+			testBodyFormatError = null;
+		} else {
+			testBodyFormatError = r.error;
+		}
+	}
+	function formatTestHeaders() {
+		const r = formatJson(testHeaders);
+		if (r.ok) {
+			testHeaders = r.text;
+			testHeadersFormatError = null;
+		} else {
+			testHeadersFormatError = r.error;
+		}
+	}
 	let testResult = $state<{
 		status: number;
 		headers: Record<string, string>;
@@ -351,8 +396,16 @@
 		{#if tab === 'edit'}
 			<div class="grid">
 				<section class="card">
+					<header class="editor-header">
 						<h2>Source</h2>
-					<textarea bind:value={editableSource} rows="14" spellcheck="false"></textarea>
+						<button type="button" class="ghost small" onclick={formatRhaiSource}>
+							Format
+						</button>
+					</header>
+					<CodeEditor bind:value={editableSource} language="rhai" minHeight="22rem" />
+					{#if rhaiFormatError}
+						<div class="error inline">{rhaiFormatError}</div>
+					{/if}
 					{#if saveSourceError}
 						<div class="error inline">{saveSourceError}</div>
 					{/if}
@@ -369,14 +422,30 @@
 
 				<section class="card">
 					<h2>Test invoke</h2>
-					<label>
+					<div class="json-block">
+						<header class="json-header">
 							<span>Request body (JSON)</span>
-						<textarea bind:value={testBody} rows="5" spellcheck="false"></textarea>
-					</label>
-					<label>
+							<button type="button" class="ghost small" onclick={formatTestBody}>
+								Format
+							</button>
+						</header>
+						<CodeEditor bind:value={testBody} language="json" minHeight="9rem" />
+						{#if testBodyFormatError}
+							<div class="error inline">{testBodyFormatError}</div>
+						{/if}
+					</div>
+					<div class="json-block">
+						<header class="json-header">
 							<span>Headers (JSON object)</span>
-						<textarea bind:value={testHeaders} rows="3" spellcheck="false"></textarea>
-					</label>
+							<button type="button" class="ghost small" onclick={formatTestHeaders}>
+								Format
+							</button>
+						</header>
+						<CodeEditor bind:value={testHeaders} language="json" minHeight="6rem" />
+						{#if testHeadersFormatError}
+							<div class="error inline">{testHeadersFormatError}</div>
+						{/if}
+					</div>
 					<div class="actions">
 						<button type="button" onclick={invoke} disabled={testInProgress}>
 							{testInProgress ? 'Running…' : 'Send'}
@@ -727,6 +796,32 @@
 		color: #94a3b8;
 		border: 1px solid #334155;
 	}
+	button.small {
+		padding: 0.2rem 0.6rem;
+		font-size: 0.75rem;
+		font-weight: 500;
+	}
+
+	.json-block {
+		display: flex;
+		flex-direction: column;
+		gap: 0.4rem;
+	}
+	.json-header {
+		display: flex;
+		justify-content: space-between;
+		align-items: center;
+		font-size: 0.85rem;
+		color: #cbd5e1;
+	}
+	.editor-header {
+		display: flex;
+		justify-content: space-between;
+		align-items: center;
+	}
+	.editor-header h2 {
+		margin: 0;
+	}
 	button.link {
 		background: transparent;
 		color: #94a3b8;
@@ -798,7 +893,6 @@
 		align-items: center;
 	}
 
-	textarea,
 	input,
 	select {
 		background: #0b1220;
@@ -811,12 +905,6 @@
 		width: 100%;
 		box-sizing: border-box;
 	}
-	textarea {
-		font-family:
-			ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;
-		font-size: 0.85rem;
-		resize: vertical;
-	}
 	input:disabled,
 	select:disabled {
 		opacity: 0.5;

dashboard/vitest.config.ts

@@ -0,0 +1,15 @@
+// Vitest config for unit-testing the Rhai parser / symbol table /
+// formatter. Kept separate from vite.config.ts because the dev/build
+// pipeline doesn't depend on a test runner.
+//
+// Tests use explicit `import { describe, it, expect } from 'vitest'`
+// to keep globals out of the type environment.
+
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+	test: {
+		include: ['src/lib/rhai/**/*.test.ts'],
+		environment: 'node'
+	}
+});

docs/versioning.md

@@ -93,12 +93,14 @@ A versioning scheme without enforcement decays in months. Five cheap mechanical
 2. **Runtime self-report.** `GET /version` returns every surface version. Dashboards, monitoring, inter-service handshakes, and humans all read from one source. `/healthz` stays a plain `"ok"` string for k8s probes — version negotiation is a separate concern.
 3. **Golden SDK contract tests.** `tests/sdk_contract/` Rhai scripts exercise every SDK surface and must pass on every commit. The contract is the test.
 4. **Migration replay test.** An integration test that boots a fresh Postgres, applies every migration in order, and asserts the resulting schema. Catches the most common mistake (edited-not-added migration).
-5. **CI guardrail script.** A small diff-aware check that:
-   - Fails if `SDK_VERSION`'s major changed without a `CHANGELOG.md` breaking-change entry
-   - Fails if a new file appeared in `migrations/` that isn't the next sequential number
-   - Fails if a route handler removed or retyped a public field without a `BREAKING:` line in the commit message
+5. **CI guardrail script.** [`scripts/check-versioning.sh`](../scripts/check-versioning.sh) — runs the structural checks that don't need git history:
+   - Migration files are numbered sequentially from `0001_*.sql` with no gaps.
+   - `SDK_VERSION` parses as `MAJOR.MINOR` (numeric, no extra components).
+   - `[workspace.package].version` parses as `MAJOR.MINOR.PATCH`.
 
-(3) through (5) are wired in over the next few PRs; (1) and (2) land in the same commit as this document.
+   Run manually as `bash scripts/check-versioning.sh`. Wires into CI when CI exists. Deferred to the same future PR that introduces CI: SDK-major-bump-needs-CHANGELOG and `BREAKING:` commit-message annotation (both need git history + a CHANGELOG file that doesn't exist yet).
+
+(3) and (4) are now in place: [`crates/executor-core/tests/sdk_contract.rs`](../crates/executor-core/tests/sdk_contract.rs) holds the SDK contract suite; [`crates/manager-core/tests/schema_snapshot.rs`](../crates/manager-core/tests/schema_snapshot.rs) holds the schema snapshot guard.
 
 ---
 
@@ -124,7 +126,7 @@ A surface can hit its own `1.0` independently of the product. The SDK in particu
 
 | | Version |
 |---|---|
-| Product | `0.5.0` |
+| Product | `0.5.1` |
 | SDK | `1.1` (adds `ctx.request.params`, `ctx.request.query`, `ctx.request.rest`) |
 | API | `1` |
 | Schema | `3` (matches `migrations/0003_routes.sql`) |

scripts/check-versioning.sh

@@ -0,0 +1,126 @@
+#!/bin/sh
+# Versioning guardrail — runs the structural checks from
+# docs/versioning.md that don't need git history. Designed to be
+# called from a CI job (once we have one) and/or as a pre-commit
+# step. Exits 0 if everything is in shape, non-zero on the first
+# failure with a precise message.
+#
+# What this DOES check:
+#   * Migration filenames are sequential `0001_*.sql`, `0002_*.sql`,
+#     ... starting from 0001 with no gaps and no duplicates.
+#   * SDK_VERSION in shared::version parses as MAJOR.MINOR (numeric).
+#   * Workspace product version in Cargo.toml parses as
+#     MAJOR.MINOR.PATCH (numeric).
+#
+# What this does NOT check (deferred until we have CI + a CHANGELOG
+# file):
+#   * Whether an SDK major bump was paired with a CHANGELOG entry.
+#   * Whether commits that retype public fields carry a `BREAKING:`
+#     annotation in the commit message.
+#
+# Usage: bash scripts/check-versioning.sh
+
+set -eu
+
+# Resolve repo root from this script's location so the checks run no
+# matter what working directory the caller is in.
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+
+fail() {
+    printf 'check-versioning: FAIL — %s\n' "$1" >&2
+    exit 1
+}
+
+# ----------------------------------------------------------------------
+# 1. Migration filenames sequential
+# ----------------------------------------------------------------------
+MIGRATIONS_DIR="$REPO_ROOT/crates/manager-core/migrations"
+[ -d "$MIGRATIONS_DIR" ] || fail "migrations dir not found at $MIGRATIONS_DIR"
+
+i=1
+for file in "$MIGRATIONS_DIR"/*.sql; do
+    [ -e "$file" ] || fail "no migration files found in $MIGRATIONS_DIR"
+    base="$(basename "$file")"
+    expected_prefix="$(printf '%04d_' "$i")"
+    case "$base" in
+        "$expected_prefix"*)
+            ;;
+        *)
+            fail "migration $base is not next-in-sequence (expected ${expected_prefix}<name>.sql); migrations must be added with strictly increasing 4-digit numbers"
+            ;;
+    esac
+    i=$((i + 1))
+done
+printf 'check-versioning: OK — %d migration(s) numbered sequentially\n' "$((i - 1))"
+
+# ----------------------------------------------------------------------
+# 2. SDK_VERSION format
+# ----------------------------------------------------------------------
+SDK_FILE="$REPO_ROOT/crates/shared/src/version.rs"
+[ -f "$SDK_FILE" ] || fail "shared::version not found at $SDK_FILE"
+
+SDK_VERSION="$(
+    awk '/^pub const SDK_VERSION/ { match($0, /"[^"]+"/); print substr($0, RSTART+1, RLENGTH-2); exit }' "$SDK_FILE"
+)"
+[ -n "$SDK_VERSION" ] || fail "could not parse SDK_VERSION from $SDK_FILE"
+
+case "$SDK_VERSION" in
+    [0-9]*"."[0-9]*)
+        # Reject things like "1.2.3" or "v1.2" or empty parts.
+        major="${SDK_VERSION%%.*}"
+        minor="${SDK_VERSION#*.}"
+        case "$major" in
+            ''|*[!0-9]*) fail "SDK_VERSION '$SDK_VERSION' major is not numeric" ;;
+        esac
+        case "$minor" in
+            ''|*[!0-9]*) fail "SDK_VERSION '$SDK_VERSION' minor is not numeric (extra components?)" ;;
+        esac
+        ;;
+    *)
+        fail "SDK_VERSION '$SDK_VERSION' is not MAJOR.MINOR (expected e.g. '1.1')"
+        ;;
+esac
+printf 'check-versioning: OK — SDK_VERSION = %s\n' "$SDK_VERSION"
+
+# ----------------------------------------------------------------------
+# 3. Workspace product version (semver MAJOR.MINOR.PATCH)
+# ----------------------------------------------------------------------
+ROOT_CARGO="$REPO_ROOT/Cargo.toml"
+[ -f "$ROOT_CARGO" ] || fail "workspace Cargo.toml not found"
+
+PRODUCT_VERSION="$(
+    awk '
+        /^\[workspace\.package\]/ { in_section = 1; next }
+        /^\[/                     { in_section = 0 }
+        in_section && /^version *= */ {
+            match($0, /"[^"]+"/)
+            print substr($0, RSTART+1, RLENGTH-2)
+            exit
+        }
+    ' "$ROOT_CARGO"
+)"
+[ -n "$PRODUCT_VERSION" ] || fail "could not parse [workspace.package].version from $ROOT_CARGO"
+
+case "$PRODUCT_VERSION" in
+    [0-9]*"."[0-9]*"."[0-9]*)
+        major="${PRODUCT_VERSION%%.*}"
+        rest="${PRODUCT_VERSION#*.}"
+        minor="${rest%%.*}"
+        patch="${rest#*.}"
+        for part_name in major minor patch; do
+            eval "part=\$$part_name"
+            case "$part" in
+                ''|*[!0-9]*)
+                    fail "product version '$PRODUCT_VERSION' has non-numeric $part_name component"
+                    ;;
+            esac
+        done
+        ;;
+    *)
+        fail "product version '$PRODUCT_VERSION' is not MAJOR.MINOR.PATCH"
+        ;;
+esac
+printf 'check-versioning: OK — product version = %s\n' "$PRODUCT_VERSION"
+
+printf '\ncheck-versioning: all checks passed.\n'

serverless_cloud_blueprint.md

@@ -732,68 +732,353 @@ volumes:
 
 ---
 
+## 11.4 Admin Auth (Phase 3a) — Shipped
+
+**Status**: shipped. Implementation lives in `crates/manager-core/src/{auth,auth_*,admin_user_repo,admin_session_repo,admin_users_api}.rs`; migration `0004_admin_auth.sql`.
+
+**Purpose**: gate the admin API (`/api/v1/admin/*`) and dashboard (`/admin/*`) behind per-user authentication. Before this phase the surface was open — anyone reaching the bound port could create, edit, and delete scripts.
+
+**Why per-user, not a shared secret**: shared admin passwords get shared between humans, leave no audit trail, and can't be revoked per-person. Per-user accounts solve all three. The initial cut deliberately stops there — no roles, no per-app permissions — because that scope is small enough to ship in a single phase without blocking Phase 3b. Roles + per-app permissions are queued for v1.3+.
+
+### Naming: `admin_users` vs `users`
+
+We reserve the unqualified **`users`** table for the v1.1+ Rhai SDK feature (script-level end users — see §8.4). Platform-operator accounts live in **`admin_users`**. They are different concepts and never share rows, even when a PiCloud install hosts apps that themselves run user management.
+
+### Schema
+
+```sql
+CREATE TABLE admin_users (
+  id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  username        TEXT NOT NULL UNIQUE,
+  password_hash   TEXT NOT NULL,       -- Argon2id (PHC string)
+  is_active       BOOLEAN NOT NULL DEFAULT TRUE,
+  created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  last_login_at   TIMESTAMPTZ
+);
+
+CREATE TABLE admin_sessions (
+  token_hash      TEXT PRIMARY KEY,    -- SHA-256(hex) of the bearer token; raw token only exists in the login response + cookie
+  user_id         UUID NOT NULL REFERENCES admin_users(id) ON DELETE CASCADE,
+  created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  expires_at      TIMESTAMPTZ NOT NULL,
+  last_used_at    TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX admin_sessions_user_idx   ON admin_sessions (user_id);
+CREATE INDEX admin_sessions_expiry_idx ON admin_sessions (expires_at);
+```
+
+`is_active` was added to the shipped cut so admins can be deactivated (login rejected, sessions wiped) without losing audit history; deletion still cascades sessions through the FK.
+
+**Password hashing**: Argon2id with default OWASP parameters. This also resolves the v1.1+ open question about user-password hashing (§10) — the platform settles on Argon2id once, here.
+
+### Bootstrap
+
+On startup, if `admin_users` is empty, the manager reads `PICLOUD_ADMIN_USERNAME` plus a password from env (or a config file) and inserts the row. Two password env vars are accepted, in this precedence:
+
+1. **`PICLOUD_ADMIN_PASSWORD_HASH`** (recommended) — pre-computed Argon2id PHC-format hash. The platform validates the string parses, then inserts it as-is. This avoids the raw password ever being written into env/compose files or process listings.
+2. **`PICLOUD_ADMIN_PASSWORD`** (fallback) — raw password. The platform hashes it with Argon2id defaults and discards the raw value. Simpler for first-time setup; less ideal for committed configs.
+
+If both are set, the hash wins and the raw value is ignored (with a warning logged). If neither is set on a fresh install, startup fails with a clear error pointing at the env vars.
+
+**Once that bootstrap row exists, the env vars become inert** — restarting with different values does not change the password. This is deliberate: the env var is a one-time setup hatch, not a recovery backdoor (a backdoor would let anyone with systemd-unit or compose-file access override any admin's password).
+
+Recovery is a separate manual flow:
+```sh
+picloud admin reset-password <username>
+```
+This requires shell access on the host (and therefore implies the operator already controls the box).
+
+### Login & Session
+
+```
+POST /api/v1/admin/auth/login
+{ "username": "...", "password": "..." }
+
+→ 200 OK
+Set-Cookie: picloud_session=<token>; HttpOnly; Secure; SameSite=Lax; Path=/
+{ "user": { "id": "...", "username": "..." }, "token": "<token>", "expires_at": "..." }
+```
+
+Token format: opaque random string (32 bytes base64). Stored hashed; the raw value lives only in the login response and the session cookie. The same token works as a bearer credential for non-browser clients:
+
+```
+Authorization: Bearer <token>
+```
+
+One token system serves both dashboard and CLI/CI clients — no separate "API token" concept. Personal long-lived API tokens can be added later as a distinct `admin_api_tokens` table if demand appears.
+
+**Session TTL** is a **24-hour sliding window**: each authenticated request bumps `expires_at` to `now + ttl` and `last_used_at` to `now`. The TTL itself is configurable per deploy via `PICLOUD_SESSION_TTL_HOURS` (default `24`). A separate background sweep deletes rows where `expires_at < now()`; until that sweep runs, expired rows are also rejected at auth-check time (so a stuck sweep can't extend session lifetime past expiry).
+
+Companion endpoints:
+- `POST /api/v1/admin/auth/logout` — deletes the session row.
+- `GET /api/v1/admin/auth/me` — returns the current authenticated user.
+
+### Admin User Management
+
+```
+GET    /api/v1/admin/admins             — list
+POST   /api/v1/admin/admins             — create  ({ username, password })
+GET    /api/v1/admin/admins/{id}        — get
+PATCH  /api/v1/admin/admins/{id}        — update ({ username?, password?, is_active? })
+DELETE /api/v1/admin/admins/{id}        — delete
+```
+
+Initial cut: every authenticated admin can call all of these. No self-elevation concerns because there are no privilege levels yet. The PATCH and DELETE handlers both refuse to leave the system with zero active admins (`422 Unprocessable Entity` with a clear message); PATCH that transitions `is_active` from true to false also wipes that user's sessions immediately.
+
+Validation: username `^[a-z0-9._-]{2,32}$`, password minimum 8 characters (no complexity rules — follows NIST 800-63B guidance).
+
+Dashboard surface: `/admin/login` (unauthed), `/admin/admins` (user list with add / change-password / deactivate / reactivate / delete actions per row). The top-bar shows the logged-in admin and a logout button. Token is held in a Svelte store with a localStorage echo so a page refresh doesn't sign you out; cookie-based auth works in parallel for non-SPA browser hits.
+
+### Forward Compatibility
+
+Schema is intentionally simple so role/permission tables can be added without touching `admin_users`. Illustrative future shape:
+
+```sql
+CREATE TABLE admin_roles (
+  id UUID PRIMARY KEY,
+  name TEXT UNIQUE                       -- e.g., 'super_admin', 'app_editor', 'app_viewer'
+);
+
+CREATE TABLE admin_user_roles (
+  admin_user_id UUID REFERENCES admin_users(id) ON DELETE CASCADE,
+  role_id       UUID REFERENCES admin_roles(id) ON DELETE RESTRICT,
+  app_id        UUID REFERENCES apps(id) ON DELETE CASCADE,   -- nullable for global roles
+  PRIMARY KEY (admin_user_id, role_id, app_id)
+);
+```
+
+Permission checks land in middleware that initially only enforces "authenticated"; the same middleware is the seam where role checks slot in later. Don't pre-build the role tables — but keep the middleware shape such that adding them is a localized change.
+
+---
+
+## 11.5 App Scoping (v1.x)
+
+**Purpose**: PiCloud hosts multiple independent applications on one platform. Each app is the isolation boundary for scripts, routes, domains, and (later) data — App A cannot see or modify App B's resources except through HTTP calls between them.
+
+**Why this slot**: pulled forward from the original v1.3+ "multi-user / project namespacing" bullet. Adding the `app_id` scoping dimension to schemas while the surface is small is cheap; retrofitting it after KV, docs, users, etc. ship is a multi-table migration on populated data.
+
+### Apps Own Scripts
+
+Every script belongs to exactly one app (`scripts.app_id`, non-null). Script IDs remain globally unique UUIDs — the API operates on script IDs directly without needing `app_id` in the URL. The dashboard nests scripts under their app in URLs (see "Dashboard URL Layout" below) but the script ID alone is still enough to resolve them server-side.
+
+Cross-app script reuse is not done by linking. A future **duplicate-to-app** feature may copy a script's content and config into another app under a new ID, with **snapshot semantics**: the copy is independent, and changes to the original do not propagate. Genuine cross-app integration goes through HTTP calls (and, much later, an explicit export/import model for shared data).
+
+### Apps Own Domains
+
+Routes can no longer claim arbitrary hostnames freely. Each app declares a set of **domain claims**:
+
+| Form | Example | Matches |
+|---|---|---|
+| Exact host | `app.example.com` | only that exact host |
+| Single-label wildcard | `*.example.com` | one label deep: `foo.example.com`, not `a.b.example.com` |
+| Parameterized | `{tenant}.example.com` | same shape as wildcard; binds `tenant` into request context |
+
+**Syntax convention**: domain parameters use `{name}` (curly braces); route-path parameters use `:name` (colon). These are deliberately distinct so docs and conflict messages never confuse the two.
+
+Every app also implicitly carries the reserved claim `__internal__`, granting access to `/api/v1/execute/{id}/*` for that app's scripts. An app with no public domain still works for execute-by-id (and, later, cron triggers, queue triggers, etc.).
+
+When a route is created, its host must match one of the parent app's domain claims. The dashboard's route-creation UI offers a selector populated from the app's claims rather than a free-text host field.
+
+### Conflict Rules — Checked at Claim Time
+
+Domain-claim collisions are detected when a domain is added to an app, not when requests arrive:
+
+- **Exact vs identical exact** → reject ("domain already claimed").
+- **Exact vs wildcard** → allowed. `foo.example.com` (App A) coexists with `*.example.com` (App B); at request time the more-specific match wins, so A handles `foo.example.com`, B handles every other subdomain.
+- **Wildcard vs wildcard at the same shape** → reject. Two apps cannot both claim `*.example.com`. `{tenant}.example.com` has the same shape as `*.example.com` for this check — the parameter name is a binding, not a discriminator.
+
+Route-conflict errors are strictly **intra-app**. A user creating a route inside App A never sees an error that references App B. The only cross-app surface is "this domain is already claimed" at domain-claim time, which is honest and unavoidable.
+
+### Runtime Dispatch
+
+Request handling becomes a two-phase lookup:
+
+1. **Host → app**: pick the app whose claim most-specifically matches the request's `Host` header (exact beats wildcard; ties are impossible by the claim rules above).
+2. **Path → route**: run that app's route trie unchanged using the existing matcher.
+
+The orchestrator's route matcher does not learn about apps — it just operates on whichever app's table was selected in step 1. This keeps the existing conflict-detection logic intact.
+
+### Local Development
+
+On `localhost`, `localhost` is treated as a regular domain claimed by exactly one app, defaulting to a bootstrap "default" app installed at first run. Dev and prod use the same dispatch model — no second mental model.
+
+### Cross-App Data Sharing — Deferred
+
+Per-app isolation is the **default and only mode** in the initial cut. KV collection `users` in App A is distinct from KV collection `users` in App B; App B cannot read App A's data without an HTTP endpoint that App A explicitly exposes.
+
+A formal export/import model — where App B exports a collection under a public name and admin grants App A read or read-write access — is a future addition. Until it ships, the escape hatch is function-to-function HTTP calls. Sharing is easier to add than to retract; isolation comes first.
+
+### Schema Sketch
+
+```sql
+CREATE TABLE apps (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  slug TEXT NOT NULL UNIQUE,    -- URL-safe; used in dashboard paths
+  name TEXT NOT NULL,           -- display name; can be edited freely
+  description TEXT,
+  created_at TIMESTAMP DEFAULT NOW(),
+  updated_at TIMESTAMP DEFAULT NOW()
+);
+
+CREATE TABLE app_domains (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  app_id UUID NOT NULL REFERENCES apps(id) ON DELETE CASCADE,
+  pattern TEXT NOT NULL,        -- 'app.example.com' | '*.example.com' | '{tenant}.example.com'
+  shape TEXT NOT NULL,          -- 'exact' | 'wildcard' | 'parameterized'
+  shape_key TEXT NOT NULL,      -- normalized form for collision check (parameterized → wildcard form)
+  created_at TIMESTAMP DEFAULT NOW(),
+
+  UNIQUE (shape_key)            -- two apps cannot share the same shape-key
+);
+
+ALTER TABLE scripts ADD COLUMN app_id UUID NOT NULL REFERENCES apps(id) ON DELETE RESTRICT;
+ALTER TABLE routes  ADD COLUMN app_id UUID NOT NULL REFERENCES apps(id) ON DELETE CASCADE;
+
+-- Existing route uniqueness checks remain unchanged; they are now scoped within an app.
+```
+
+The `UNIQUE (shape_key)` constraint enforces the "same shape" rule at the DB level. Exact-vs-wildcard coexistence is allowed because exact hosts produce a different `shape_key` from wildcards.
+
+### Bootstrap & Migration
+
+The migration's behavior **depends on whether the install already has user content**:
+
+- **Fresh install** (no pre-existing scripts or routes): seed a **"Hello World"** app with `localhost` as its sole domain claim, a `hello.rhai` script that returns a greeting, and a `/hello` GET route. This serves as the reference example for new users — they can hit `http://localhost:<port>/hello` immediately after first boot and see something work. The seed is intentionally minimal; future iterations may flesh it out.
+- **Upgrading install** (pre-existing scripts or routes): create a **"default"** app with `slug = 'default'`, `localhost` as its sole domain claim, and assign every existing script and route to it. The Hello World seed is **not** added in this case — adding it would pollute the user's existing content.
+
+The branch point is detected by inspecting whether `scripts` had any rows before the migration ran.
+
+### Dashboard URL Layout
+
+The dashboard is **app-hierarchical**, using the app's `slug` for human-readable URLs:
+
+```
+/admin/apps                          — app list
+/admin/apps/new                      — create app
+/admin/apps/{slug}                   — app overview
+/admin/apps/{slug}/scripts           — scripts in this app
+/admin/apps/{slug}/scripts/{id}      — script detail (script ID still globally unique; slug is for breadcrumbs)
+/admin/apps/{slug}/routes            — routes in this app
+/admin/apps/{slug}/domains           — domain claims for this app
+/admin/apps/{slug}/settings          — app settings
+```
+
+Renaming an app changes its `slug`. The previous slug stays as a **permanent redirect** to the renamed app, persisting until another app (a new app or another rename) tries to claim that retired slug. When such a collision happens, the dashboard shows a warning before letting the operator proceed: *"`old-slug` currently redirects to app `bar` — using it here will break any external links that still target the old slug."* If the operator confirms, the redirect row is dropped and the slug is reused.
+
+Implementation sketch:
+
+```sql
+CREATE TABLE app_slug_history (
+  slug TEXT PRIMARY KEY,                       -- the retired slug
+  current_app_id UUID NOT NULL REFERENCES apps(id) ON DELETE CASCADE,
+  retired_at TIMESTAMP DEFAULT NOW()
+);
+```
+
+Slug lookup order:
+1. `apps.slug = {slug}` → render the page directly.
+2. `app_slug_history.slug = {slug}` → `301` redirect to `/admin/apps/{current_app.slug}/<rest>`.
+3. Neither → `404`.
+
+Slug claim order (create or rename to a slug `S`):
+1. If `S` matches a current app's slug → reject as a conflict (the usual unique-constraint error).
+2. If `S` matches a row in `app_slug_history` → return a "needs confirmation" response. Dashboard surfaces the warning; on confirm, delete the history row inside the same transaction as the create/rename.
+3. Otherwise → proceed normally; if this was a rename, insert the old slug into `app_slug_history`.
+
+A rename back to an app's own retired slug is a special case: just delete the row from `app_slug_history` and don't warn.
+
+### API URL Layout
+
+The HTTP API stays **flat**:
+
+```
+GET    /api/v1/admin/apps                     — list apps
+POST   /api/v1/admin/apps                     — create app
+GET    /api/v1/admin/apps/{id_or_slug}        — get app
+PATCH  /api/v1/admin/apps/{id_or_slug}        — update app
+DELETE /api/v1/admin/apps/{id_or_slug}        — delete app
+GET    /api/v1/admin/apps/{id_or_slug}/domains   — list/manage domain claims
+POST   /api/v1/admin/apps/{id_or_slug}/domains
+DELETE /api/v1/admin/apps/{id_or_slug}/domains/{domain_id}
+
+GET    /api/v1/admin/scripts                  — list scripts (now supports ?app={id_or_slug} filter)
+GET    /api/v1/admin/scripts/{id}             — unchanged; script IDs are globally unique
+... (rest of scripts/routes endpoints unchanged)
+```
+
+The scripts and routes endpoints keep their existing shape — this avoids forcing API consumers to a v2 migration. The new app-management endpoints are additive. Clients that want app context can use the `?app=` filter.
+
+---
+
 ## 12. Development Roadmap
 
-### Phase 1: MVP ✓ (Current)
-- [x] Orchestrator: REST API for script CRUD + execute
-- [x] Executor image: load + run Rhai script
-- [x] Dashboard: upload script, deploy, delete
-- [x] PostgreSQL: script storage + execution logs
-- [ ] **Timeline**: 4-6 weeks
+### Phase 1: MVP ✓ (Shipped)
+- [x] Manager: REST API for script CRUD + executions log
+- [x] Orchestrator: HTTP ingress, route resolution, dispatch
+- [x] Executor: embedded Rhai engine with sandbox limits (replaces the original Docker-per-execution model — embedded gives better latency and less infra)
+- [x] Dashboard (SvelteKit): script upload, edit, routing config, execution log viewer
+- [x] PostgreSQL: scripts, routes, execution_logs; embedded migrations
+- [x] Caddy reverse proxy in front of everything
 
-**Deliverables:**
-- Docker image for executor
-- Rust binary (Orchestrator)
-- Static HTML + Alpine.js dashboard
-- docker-compose.yml for local/prod deployment
+**Delivered beyond original MVP scope:** custom routing (exact / prefix / param + host-aware) with conflict detection, per-script Rhai sandbox config, four-tab dashboard detail UI, structured versioning scheme (product + SDK + API + schema + wire) with `/version` self-report, Rhai editor with autocomplete / goto / find-usages / formatter, SDK contract + schema snapshot + integration test suites.
 
 ---
 
-### Phase 2: v1.0 (Polish & Usability)
-- Script versioning + rollback
-- Execution history dashboard (view logs, timings, errors)
-- Better error messages (script parse errors, timeouts)
-- Timeout/resource limit enforcement
-- Container cleanup/GC
-- Rhai SDK: `request()` function fully documented
+### Phase 2: v1.0 (Polish & Usability) ✓ (Shipped)
+- [x] Execution history dashboard
+- [x] Better error messages (Rhai parse errors, sandbox limits, timeouts)
+- [x] Timeout / resource-limit enforcement (per-script sandbox config)
+- [x] Rhai SDK docs current through SDK 1.1
 
-**Timeline**: 2-3 weeks
+(Script versioning + rollback remains deferred — see Phase 6.)
 
 ---
 
-### Phase 3: v1.1 (Expand Capabilities & Services)
-- Queue-based triggers (RabbitMQ / Redis)
-- Scheduled jobs (cron syntax)
-- Secrets management (encrypted env vars)
-- **Rhai SDK: KV Store** (`kv.get()`, `kv.set()`, `kv.delete()` with collections)
-- **Rhai SDK: Document Store** (`docs.create()`, `docs.find()`, `docs.update()`, `docs.delete()` with schema validation)
-- **Rhai SDK: User Management** (auth, CRUD, roles, permissions, invitations, password reset)
-- **Rhai SDK: Email** (`email.send(to, subject, body)` via SMTP)
-- Rhai SDK: `s3.*`, `queue.*`, `invoke()`, `retry.*()`
-- External HTTP calls from scripts (`http.get()`, `http.post()`)
-- Script versioning with automatic rollback on error
+### Phase 3: v1.0.x — Foundations (Current focus)
 
-**Timeline**: 8-10 weeks
+Two foundation pieces that must land before the v1.1 service expansion, because retrofitting them later is expensive.
+
+**3a. Admin auth** — ✓ shipped. See section 11.4. Per-user `admin_users` (not a shared secret), Argon2id passwords, env-var bootstrap of the first admin, session-token doubling as bearer token for API. No roles in this cut; schema is forward-compatible with later RBAC.
+
+**3b. Multi-app scoping** — see section 11.5. Introduce `apps`, `app_domains`, and `app_id` columns on `scripts` and `routes`. Migration assigns existing data to a `default` app (or seeds a `Hello World` app on fresh installs). Orchestrator dispatch becomes two-phase (Host → app → route). Reserved internal domain (`__internal__`) keeps `/api/v1/execute/{id}/*` working for app scripts without requiring a public hostname. Dashboard becomes app-hierarchical (`/admin/apps/{slug}/...`); API keeps its existing flat shape with new app-management endpoints under `/api/v1/admin/apps/*`.
+
+**Why both before v1.1**: every v1.1 service (KV, docs, users, etc.) needs an `app_id` scoping key in its schema. Adding it now, with one small migration on existing tables, is cheap. Adding it after those services ship is several migrations on populated data.
 
 ---
 
-### Phase 4: v1.2 (Advanced Workflows & Hierarchies)
+### Phase 4: v1.1 (Expand Capabilities & Services)
+Ordered roughly by foundation value: each row enables the rows below it.
+
+1. **Rhai SDK: KV Store** (`kv.get/set/delete/has` with collections, scoped per app)
+2. **Rhai SDK: Document Store** (`docs.create/find/update/delete/list/query`, scoped per app)
+3. **Rhai SDK: HTTP** (`http.get/post/put/delete` with SSRF deny-list)
+4. **Cron triggers** (manager scheduler skeleton already exists; needs schedules table + `FOR UPDATE SKIP LOCKED` dispatch)
+5. **Rhai SDK: Email** (`email.send` via SMTP; needs per-deploy config)
+6. **Rhai SDK: User Management** (auth, CRUD, roles, permissions, invitations, password reset; depends on email for invites; scoped per app)
+7. **Queue triggers** (start with Postgres LISTEN/NOTIFY; RabbitMQ/Redis later if needed)
+8. **`invoke()` + `retry::*`** (function-to-function calls; execution_logs gain `parent_execution_id`)
+9. **Secrets management** (encrypted env vars, per app)
+
+---
+
+### Phase 5: v1.2 (Advanced Workflows & Hierarchies)
 - Function workflows (DAG execution, conditional branching, error handling)
-- Function hierarchy (parent/child invocation, sync/async calls)
 - Nested workflows
 - Call graph visualization + execution tracing
-- Advanced query support for document store (`docs.query()` with filters)
-
-**Timeline**: 6-8 weeks
+- Advanced query support for document store (`docs.query()` with filters: `$gt`, `$or`, etc.)
+- Service interceptors (see section 9.4)
 
 ---
 
-### Phase 5: v1.3+ (Scaling, Security, Observability)
-- Multi-user / project namespacing
+### Phase 6: v1.3+ (Scaling, Security, Observability)
+- Cluster mode (split-process manager + per-node orchestrator + executor); cluster-mode wire protocol versioning
+- Cross-app data sharing (explicit export/import model — see section 11.5)
+- Script versioning + rollback (keep N historical versions in a side table; rollback endpoint)
 - Rate limiting on endpoints
-- Auth (API keys, dashboard login)
+- Auth (richer model: API keys, OAuth, etc.)
 - Metrics + monitoring dashboard
-- Container pooling / warm starts
 - Distributed tracing (OpenTelemetry)
 - Webhooks for execution events
 - S3 integration (object storage reads/writes)