migration 0030: app_user_invitations table — surrogate id PK + unique token_hash, app_id FK cascading, pre-stages email + display_name + roles for a user that doesn't exist yet. One-shot via atomic UPDATE SET accepted_at = NOW() WHERE accepted_at IS NULL. UsersServiceImpl gains invitations: Arc<dyn AppUserInvitationRepo> plus a mint_session() helper factored from login() and reused by accept_invite(). users::invite(email, opts) is gated on AppUsersAdmin (per brief — the most senior of the three new capabilities). Optional EmailTemplateOpts inside InviteOpts: omitting the template skips the email send so an admin can stamp invitations for out-of-band delivery (mailers, printed onboarding letters, etc.). If the template is present and the email service isn't configured, surfaces as NotConfigured; non-NotConfigured failures are logged but kept silent so the invitation row remains valid for retry. users::accept_invite(token, password, display_name?) atomically consumes the invitation, validates the new password, creates the user (returning () on DuplicateEmail — sign-up beat acceptance, they'll log in normally), and mints a fresh session via mint_session so the caller can return both the user and a working session token in one round trip. Pre-staged roles are stored on the invitation row but not yet applied — the app_user_roles table arrives in commit 8 (migration 0031). For commit 7 the staged-but-not-applied case logs an info record so an operator can audit the gap. list_invitations + revoke_invitation (admin-mediated, gated on AppUsersAdmin) ship in this commit and become reachable from the HTTP surface later in the series. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
PiCloud
A lightweight, self-hosted, event-driven serverless compute platform. Upload a Rhai script, get an HTTP endpoint. Designed to run on a single modest server with no idle CPU cost, and to scale out to a small cluster when you need it.
Status: Phase 1 — MVP scaffolding in progress.
The authoritative design lives in
serverless_cloud_blueprint.md.
Why
Existing serverless platforms are either cloud-locked, heavyweight, or both. PiCloud aims for the opposite end of the spectrum: one binary, one database, one reverse proxy — running on hardware you already own.
Architecture (one paragraph)
PiCloud splits into three logical services — manager (control plane: scripts, schedules, dashboard), orchestrator (per-node event ingress and dispatch), and executor (per-node Rhai sandbox) — each backed by a *-core Rust library. In MVP they run in a single process; in cluster mode they run as three binaries with one manager and one orchestrator + executor per node. Caddy fronts everything; PostgreSQL is the single source of truth.
See CLAUDE.md for working notes and serverless_cloud_blueprint.md for the full design.
Quick Start
Coming as scaffolding lands. For now:
# Rust toolchain (pinned via rust-toolchain.toml)
cargo check --workspace
# Run the all-in-one MVP binary (once main.rs is wired up)
cargo run -p picloud
Repository Layout
crates/
shared/ cross-cutting types
executor-core/ Rhai engine + sandbox
orchestrator-core/ event ingress, dispatch
manager-core/ control plane
picloud/ MVP all-in-one binary
picloud-{manager,orchestrator,executor}/ cluster-mode binaries (skeleton)
dashboard/ SvelteKit
caddy/ Caddyfile
docker/ Dockerfiles
docs/
git-workflow.md Trunk-based workflow
Contributing
See docs/git-workflow.md for the branching and commit conventions. TL;DR: trunk-based, short-lived branches, Conventional Commits, no force-pushing main.
License
TBD.