feat(v1.1.5): pubsub::publish_durable SDK + pubsub:* triggers

Durable pub/sub through the universal outbox — the sixth trigger kind.

- `pubsub::publish_durable(topic, message)` Rhai SDK (no handle; topics
  ARE the grouping unit). Message JSON-encoded; Blobs base64 at any
  depth.
- `PubsubService` trait in picloud-shared with the topic matcher +
  validator (exact / `<prefix>.*` / `*`; mid-pattern wildcards
  rejected). `PostgresPubsubRepo` + `PubsubServiceImpl` in manager-core.
- Publish-time fan-out: one outbox row per matching enabled pubsub
  trigger, all in ONE transaction (no half-fan-out on crash). No
  matching trigger → publish succeeds silently, zero rows.
- `pubsub:*` trigger kind via Layout-E (0020: widen both CHECKs +
  pubsub_trigger_details + partial index), TriggerEvent::Pubsub +
  ctx.event.pubsub, dispatcher arm, admin endpoint POST /triggers/pubsub
  (validates topic pattern + reuses validate_trigger_target).
- AppPubsubPublish capability → script:write (seven-scope held).
- Dashboard Pub/Sub trigger form on the Triggers tab + list rendering.

publish_ephemeral stays deferred to v1.2. ~18 new tests (service
in-memory incl. transactional-rollback, shared matcher, bridge
encoding). No DB required for the suite.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/manager-core/migrations/0020_pubsub_triggers.sql

@@ -0,0 +1,34 @@
+-- v1.1.5: extend the triggers framework to recognise `pubsub` as the
+-- sixth concrete kind. Same Layout-E shape as files (0019): two CHECK
+-- constraints widen, one new detail table.
+--
+-- Pub/sub fans out at PUBLISH time (one outbox row per matching trigger,
+-- written by the PubsubServiceImpl), so the dispatcher needs no pubsub-
+-- specific branching — a pubsub outbox row dispatches like any other
+-- async trigger.
+
+-- Extend triggers.kind to include 'pubsub'.
+ALTER TABLE triggers DROP CONSTRAINT triggers_kind_check;
+ALTER TABLE triggers ADD CONSTRAINT triggers_kind_check
+    CHECK (kind IN ('kv', 'dead_letter', 'docs', 'cron', 'files', 'pubsub'));
+
+-- Extend outbox.source_kind to include 'pubsub'.
+ALTER TABLE outbox DROP CONSTRAINT outbox_source_kind_check;
+ALTER TABLE outbox ADD CONSTRAINT outbox_source_kind_check
+    CHECK (source_kind IN ('http', 'kv', 'dead_letter', 'docs',
+                           'cron', 'files', 'pubsub'));
+
+-- One row per pubsub trigger. `topic_pattern` is "exact", "prefix.*",
+-- or "*" — validated in Rust at trigger creation. Topics are implicit
+-- on first publish; the external-subscribable `topics` table is v1.1.6.
+CREATE TABLE pubsub_trigger_details (
+    trigger_id     UUID PRIMARY KEY REFERENCES triggers(id) ON DELETE CASCADE,
+    topic_pattern  TEXT NOT NULL
+);
+
+-- Hot lookup for fan-out: "all enabled pubsub triggers in app X".
+-- Third partial index of its kind (after v1.1.1's idx_triggers_app_kind_
+-- enabled); partial indexes are tiny and the planner picks the narrowest.
+CREATE INDEX idx_triggers_app_pubsub_enabled
+    ON triggers (app_id, kind)
+    WHERE enabled = TRUE AND kind = 'pubsub';

crates/manager-core/src/dispatcher.rs

@@ -167,7 +167,8 @@ impl Dispatcher {
             | OutboxSourceKind::Docs
             | OutboxSourceKind::DeadLetter
             | OutboxSourceKind::Cron
-            | OutboxSourceKind::Files => {
+            | OutboxSourceKind::Files
+            | OutboxSourceKind::Pubsub => {
                 let resolved = self.resolve_trigger(&row).await?;
                 let req = match self.build_exec_request(&row, &resolved).await {
                     Ok(req) => req,

crates/manager-core/src/lib.rs

@@ -43,6 +43,8 @@ pub mod module_source;
 pub mod outbox_event_emitter;
 pub mod outbox_repo;
 pub mod principal_resolver;
+pub mod pubsub_repo;
+pub mod pubsub_service;
 pub mod repo;
 pub mod route_admin;
 pub mod route_repo;
@@ -113,6 +115,8 @@ pub use outbox_repo::{
     NewOutboxRow, OutboxRepo, OutboxRepoError, OutboxRow, OutboxSourceKind, PostgresOutboxRepo,
 };
 pub use principal_resolver::{AdminPrincipalResolver, PrincipalResolver, PrincipalResolverError};
+pub use pubsub_repo::{PostgresPubsubRepo, PublishCtx, PubsubRepo, PubsubRepoError};
+pub use pubsub_service::PubsubServiceImpl;
 pub use repo::{
     ExecutionLogRepository, NewScript, PostgresExecutionLogRepository, PostgresScriptRepository,
     RepoResolver, ScriptPatch, ScriptRepository, ScriptRepositoryError,
@@ -123,8 +127,8 @@ pub use sandbox::{CeilingError, SandboxCeiling};
 pub use trigger_config::{BackoffShape, TriggerConfig};
 pub use trigger_repo::{
     collection_matches, CreateDeadLetterTrigger, CreateDocsTrigger, CreateFilesTrigger,
-    CreateKvTrigger, DeadLetterTriggerMatch, DocsTriggerMatch, FilesTriggerMatch, KvTriggerMatch,
-    PostgresTriggerRepo, Trigger, TriggerDetails, TriggerDispatchMode, TriggerKind, TriggerRepo,
-    TriggerRepoError,
+    CreateKvTrigger, CreatePubsubTrigger, DeadLetterTriggerMatch, DocsTriggerMatch,
+    FilesTriggerMatch, KvTriggerMatch, PostgresTriggerRepo, Trigger, TriggerDetails,
+    TriggerDispatchMode, TriggerKind, TriggerRepo, TriggerRepoError,
 };
 pub use triggers_api::{triggers_router, TriggersApiError, TriggersState};

crates/manager-core/src/outbox_repo.rs

@@ -29,6 +29,8 @@ pub enum OutboxSourceKind {
     Cron,
     /// v1.1.5.
     Files,
+    /// v1.1.5.
+    Pubsub,
 }
 
 impl OutboxSourceKind {
@@ -41,6 +43,7 @@ impl OutboxSourceKind {
             Self::DeadLetter => "dead_letter",
             Self::Cron => "cron",
             Self::Files => "files",
+            Self::Pubsub => "pubsub",
         }
     }
 
@@ -53,6 +56,7 @@ impl OutboxSourceKind {
             "dead_letter" => Some(Self::DeadLetter),
             "cron" => Some(Self::Cron),
             "files" => Some(Self::Files),
+            "pubsub" => Some(Self::Pubsub),
             _ => None,
         }
     }

crates/manager-core/src/pubsub_repo.rs

@@ -0,0 +1,118 @@
+//! `PubsubRepo` — publish-time fan-out for the v1.1.5 `pubsub::*` SDK.
+//!
+//! `publish_durable` writes one outbox row per matching enabled `pubsub`
+//! trigger, all inside a single transaction so a partial fan-out (some
+//! subscribers got rows, others didn't, then a crash) can't happen.
+//! Each delivery row then retries / dead-letters independently through
+//! the existing dispatcher — no pub/sub-specific dispatch branching.
+//!
+//! Topic pattern matching runs in Rust (`picloud_shared::topic_matches`)
+//! against the small set of the app's enabled pubsub triggers, keeping
+//! the SELECT trivial. v1.2 can add a topic-trie index if fan-out
+//! becomes a hot path.
+
+use async_trait::async_trait;
+use picloud_shared::{topic_matches, AdminUserId, AppId, ExecutionId};
+use sqlx::PgPool;
+use uuid::Uuid;
+
+#[derive(Debug, thiserror::Error)]
+pub enum PubsubRepoError {
+    #[error("database error: {0}")]
+    Db(#[from] sqlx::Error),
+}
+
+/// The execution-context bits a fan-out needs to stamp onto each outbox
+/// row. Derived from the publishing script's `SdkCallCx`.
+#[derive(Debug, Clone, Copy)]
+pub struct PublishCtx {
+    pub app_id: AppId,
+    pub origin_principal: Option<AdminUserId>,
+    pub trigger_depth: u32,
+    pub root_execution_id: ExecutionId,
+}
+
+#[async_trait]
+pub trait PubsubRepo: Send + Sync {
+    /// Fan out a publish to every matching enabled pubsub trigger in
+    /// `ctx.app_id`, inserting one outbox row each in a SINGLE
+    /// transaction. `event_payload` is the serialized
+    /// `TriggerEvent::Pubsub`. Returns the number of delivery rows
+    /// written (0 when no trigger matched — the publish still succeeds).
+    async fn fan_out_publish(
+        &self,
+        ctx: PublishCtx,
+        topic: &str,
+        event_payload: serde_json::Value,
+    ) -> Result<u32, PubsubRepoError>;
+}
+
+pub struct PostgresPubsubRepo {
+    pool: PgPool,
+}
+
+impl PostgresPubsubRepo {
+    #[must_use]
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+}
+
+#[derive(sqlx::FromRow)]
+struct PubsubTriggerRow {
+    id: Uuid,
+    script_id: Uuid,
+    topic_pattern: String,
+}
+
+#[async_trait]
+impl PubsubRepo for PostgresPubsubRepo {
+    async fn fan_out_publish(
+        &self,
+        ctx: PublishCtx,
+        topic: &str,
+        event_payload: serde_json::Value,
+    ) -> Result<u32, PubsubRepoError> {
+        let mut tx = self.pool.begin().await?;
+
+        // Load all enabled pubsub triggers for the app; filter by topic
+        // pattern in Rust (keeps the query simple, honours the
+        // empty/`*`/prefix semantics without teaching SQL about globs).
+        let rows: Vec<PubsubTriggerRow> = sqlx::query_as(
+            "SELECT t.id, t.script_id, d.topic_pattern \
+             FROM triggers t \
+             JOIN pubsub_trigger_details d ON d.trigger_id = t.id \
+             WHERE t.app_id = $1 AND t.kind = 'pubsub' AND t.enabled = TRUE",
+        )
+        .bind(ctx.app_id.into_inner())
+        .fetch_all(&mut *tx)
+        .await?;
+
+        let mut written: u32 = 0;
+        for r in rows {
+            if !topic_matches(&r.topic_pattern, topic) {
+                continue;
+            }
+            sqlx::query(
+                "INSERT INTO outbox ( \
+                    app_id, source_kind, trigger_id, script_id, reply_to, \
+                    payload, origin_principal, trigger_depth, root_execution_id \
+                 ) VALUES ($1, 'pubsub', $2, $3, NULL, $4, $5, $6, $7)",
+            )
+            .bind(ctx.app_id.into_inner())
+            .bind(r.id)
+            .bind(r.script_id)
+            .bind(&event_payload)
+            .bind(ctx.origin_principal.map(AdminUserId::into_inner))
+            .bind(i32::try_from(ctx.trigger_depth.saturating_add(1)).unwrap_or(1))
+            .bind(ctx.root_execution_id.into_inner())
+            .execute(&mut *tx)
+            .await?;
+            written += 1;
+        }
+
+        // Commit once — all rows or none.
+        tx.commit().await?;
+        Ok(written)
+    }
+}

crates/manager-core/src/pubsub_service.rs

@@ -0,0 +1,320 @@
+//! `PubsubServiceImpl` — wires `PubsubRepo` underneath the
+//! `picloud_shared::PubsubService` trait scripts see via the Rhai
+//! bridge.
+//!
+//! Mirrors the other stateful services: script-as-gate authz
+//! (`AppPubsubPublish`, skipped when `cx.principal` is `None`), with the
+//! backend doing a publish-time outbox fan-out instead of a row write.
+//! No `ServiceEventEmitter` here — pub/sub publishes directly to the
+//! outbox; it doesn't mutate local data that other triggers observe.
+
+use std::sync::Arc;
+
+use async_trait::async_trait;
+use picloud_shared::{PubsubError, PubsubService, SdkCallCx, TriggerEvent};
+
+use crate::authz::{self, AuthzRepo, Capability};
+use crate::pubsub_repo::{PublishCtx, PubsubRepo, PubsubRepoError};
+
+pub struct PubsubServiceImpl {
+    repo: Arc<dyn PubsubRepo>,
+    authz: Arc<dyn AuthzRepo>,
+}
+
+impl PubsubServiceImpl {
+    #[must_use]
+    pub fn new(repo: Arc<dyn PubsubRepo>, authz: Arc<dyn AuthzRepo>) -> Self {
+        Self { repo, authz }
+    }
+
+    async fn check_publish(&self, cx: &SdkCallCx) -> Result<(), PubsubError> {
+        if let Some(ref principal) = cx.principal {
+            authz::require(
+                &*self.authz,
+                principal,
+                Capability::AppPubsubPublish(cx.app_id),
+            )
+            .await
+            .map_err(|_| PubsubError::Forbidden)?;
+        }
+        Ok(())
+    }
+}
+
+impl From<PubsubRepoError> for PubsubError {
+    fn from(e: PubsubRepoError) -> Self {
+        Self::Unavailable(e.to_string())
+    }
+}
+
+#[async_trait]
+impl PubsubService for PubsubServiceImpl {
+    async fn publish_durable(
+        &self,
+        cx: &SdkCallCx,
+        topic: &str,
+        message: serde_json::Value,
+    ) -> Result<(), PubsubError> {
+        if topic.trim().is_empty() {
+            return Err(PubsubError::EmptyTopic);
+        }
+        self.check_publish(cx).await?;
+
+        // `published_at` is stamped on the manager side so every
+        // delivery agrees on one instant.
+        let event = TriggerEvent::Pubsub {
+            topic: topic.to_string(),
+            message,
+            published_at: chrono::Utc::now(),
+        };
+        let payload = serde_json::to_value(&event)
+            .map_err(|e| PubsubError::Rejected(format!("event serialize: {e}")))?;
+
+        let publish_ctx = PublishCtx {
+            app_id: cx.app_id,
+            origin_principal: cx.principal.as_ref().map(|p| p.user_id),
+            trigger_depth: cx.trigger_depth,
+            root_execution_id: cx.root_execution_id,
+        };
+        // No matching triggers → 0 rows written, publish still succeeds.
+        self.repo
+            .fan_out_publish(publish_ctx, topic, payload)
+            .await?;
+        Ok(())
+    }
+}
+
+// ----------------------------------------------------------------------------
+// Tests — in-memory PubsubRepo so unit tests don't need Postgres. The
+// real transactional fan-out is covered against a live DB by the
+// integration suite; the in-memory fake models the all-or-nothing
+// commit so the rollback semantics can be asserted without a DB.
+// ----------------------------------------------------------------------------
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::authz::{AuthzError, AuthzRepo};
+    use async_trait::async_trait;
+    use picloud_shared::{
+        topic_matches, AdminUserId, AppId, AppRole, ExecutionId, InstanceRole, Principal,
+        RequestId, ScriptId, UserId,
+    };
+    use std::sync::Mutex;
+
+    /// In-memory pubsub repo. Holds a set of `(app, pattern)`
+    /// subscriptions and records the outbox rows a publish would write.
+    /// `fail_at` simulates a mid-fan-out INSERT failure: when set to
+    /// `Some(n)`, the n-th (1-indexed) matching row errors and NOTHING
+    /// is recorded — modelling the single-transaction rollback.
+    struct InMemoryPubsubRepo {
+        subs: Vec<(AppId, String)>,
+        written: Mutex<Vec<(AppId, String)>>,
+        fail_at: Option<usize>,
+    }
+
+    impl InMemoryPubsubRepo {
+        fn new(subs: Vec<(AppId, String)>) -> Self {
+            Self {
+                subs,
+                written: Mutex::new(Vec::new()),
+                fail_at: None,
+            }
+        }
+        fn written_count(&self) -> usize {
+            self.written.lock().unwrap().len()
+        }
+    }
+
+    #[async_trait]
+    impl PubsubRepo for InMemoryPubsubRepo {
+        async fn fan_out_publish(
+            &self,
+            ctx: PublishCtx,
+            topic: &str,
+            _event_payload: serde_json::Value,
+        ) -> Result<u32, PubsubRepoError> {
+            let matches: Vec<&(AppId, String)> = self
+                .subs
+                .iter()
+                .filter(|(a, pat)| *a == ctx.app_id && topic_matches(pat, topic))
+                .collect();
+            let mut staged = Vec::new();
+            for (i, _) in matches.iter().enumerate() {
+                if self.fail_at == Some(i + 1) {
+                    // Rollback: nothing was committed.
+                    return Err(PubsubRepoError::Db(sqlx::Error::Protocol(
+                        "simulated insert failure".into(),
+                    )));
+                }
+                staged.push((ctx.app_id, topic.to_string()));
+            }
+            let n = staged.len();
+            self.written.lock().unwrap().extend(staged);
+            Ok(u32::try_from(n).unwrap_or(u32::MAX))
+        }
+    }
+
+    #[derive(Default)]
+    struct DenyingAuthzRepo;
+    #[async_trait]
+    impl AuthzRepo for DenyingAuthzRepo {
+        async fn membership(
+            &self,
+            _user_id: UserId,
+            _app_id: AppId,
+        ) -> Result<Option<AppRole>, AuthzError> {
+            Ok(None)
+        }
+    }
+
+    #[derive(Default)]
+    struct EditorAuthzRepo;
+    #[async_trait]
+    impl AuthzRepo for EditorAuthzRepo {
+        async fn membership(
+            &self,
+            _user_id: UserId,
+            _app_id: AppId,
+        ) -> Result<Option<AppRole>, AuthzError> {
+            Ok(Some(AppRole::Editor))
+        }
+    }
+
+    fn anon_cx(app_id: AppId) -> SdkCallCx {
+        SdkCallCx {
+            app_id,
+            script_id: ScriptId::new(),
+            principal: None,
+            execution_id: ExecutionId::new(),
+            request_id: RequestId::new(),
+            trigger_depth: 0,
+            root_execution_id: ExecutionId::new(),
+            is_dead_letter_handler: false,
+            event: None,
+        }
+    }
+
+    fn member_cx(app_id: AppId) -> SdkCallCx {
+        SdkCallCx {
+            principal: Some(Principal {
+                user_id: AdminUserId::new(),
+                instance_role: InstanceRole::Member,
+                scopes: None,
+                app_binding: None,
+            }),
+            ..anon_cx(app_id)
+        }
+    }
+
+    fn svc(repo: Arc<dyn PubsubRepo>, authz: Arc<dyn AuthzRepo>) -> PubsubServiceImpl {
+        PubsubServiceImpl::new(repo, authz)
+    }
+
+    #[tokio::test]
+    async fn publish_writes_one_row_per_matching_trigger() {
+        let app = AppId::new();
+        let repo = Arc::new(InMemoryPubsubRepo::new(vec![
+            (app, "user.*".into()),
+            (app, "user.created".into()),
+            (app, "order.*".into()), // does not match
+        ]));
+        let files = svc(repo.clone(), Arc::new(DenyingAuthzRepo));
+        files
+            .publish_durable(&anon_cx(app), "user.created", serde_json::json!({"id": 1}))
+            .await
+            .unwrap();
+        // Two of the three subscriptions match "user.created".
+        assert_eq!(repo.written_count(), 2);
+    }
+
+    #[tokio::test]
+    async fn no_matching_trigger_succeeds_silently() {
+        let app = AppId::new();
+        let repo = Arc::new(InMemoryPubsubRepo::new(vec![(app, "order.*".into())]));
+        let svc = svc(repo.clone(), Arc::new(DenyingAuthzRepo));
+        svc.publish_durable(&anon_cx(app), "user.created", serde_json::json!(1))
+            .await
+            .unwrap();
+        assert_eq!(repo.written_count(), 0);
+    }
+
+    #[tokio::test]
+    async fn empty_topic_rejected() {
+        let app = AppId::new();
+        let repo = Arc::new(InMemoryPubsubRepo::new(vec![]));
+        let svc = svc(repo, Arc::new(DenyingAuthzRepo));
+        let err = svc
+            .publish_durable(&anon_cx(app), "   ", serde_json::json!(1))
+            .await
+            .unwrap_err();
+        assert!(matches!(err, PubsubError::EmptyTopic));
+    }
+
+    #[tokio::test]
+    async fn cross_app_isolation() {
+        let app_a = AppId::new();
+        let app_b = AppId::new();
+        // The only subscription belongs to app B.
+        let repo = Arc::new(InMemoryPubsubRepo::new(vec![(app_b, "*".into())]));
+        let svc = svc(repo.clone(), Arc::new(DenyingAuthzRepo));
+        // App A publishes — app B's trigger must NOT fire.
+        svc.publish_durable(&anon_cx(app_a), "user.created", serde_json::json!(1))
+            .await
+            .unwrap();
+        assert_eq!(repo.written_count(), 0);
+    }
+
+    #[tokio::test]
+    async fn fan_out_is_transactional_all_or_nothing() {
+        let app = AppId::new();
+        let mut repo = InMemoryPubsubRepo::new(vec![
+            (app, "*".into()),
+            (app, "user.*".into()),
+            (app, "user.created".into()),
+        ]);
+        repo.fail_at = Some(3); // fail on the 3rd matching insert
+        let repo = Arc::new(repo);
+        let svc = svc(repo.clone(), Arc::new(DenyingAuthzRepo));
+        let err = svc
+            .publish_durable(&anon_cx(app), "user.created", serde_json::json!(1))
+            .await
+            .unwrap_err();
+        assert!(matches!(err, PubsubError::Unavailable(_)));
+        // Rollback: no partial fan-out survived.
+        assert_eq!(repo.written_count(), 0);
+    }
+
+    #[tokio::test]
+    async fn anonymous_cx_skips_authz() {
+        let app = AppId::new();
+        let repo = Arc::new(InMemoryPubsubRepo::new(vec![]));
+        let svc = svc(repo, Arc::new(DenyingAuthzRepo));
+        // No principal → no authz check even with a denying repo.
+        svc.publish_durable(&anon_cx(app), "t", serde_json::json!(1))
+            .await
+            .unwrap();
+    }
+
+    #[tokio::test]
+    async fn member_without_role_is_forbidden() {
+        let app = AppId::new();
+        let repo = Arc::new(InMemoryPubsubRepo::new(vec![]));
+        let svc = svc(repo, Arc::new(DenyingAuthzRepo));
+        let err = svc
+            .publish_durable(&member_cx(app), "t", serde_json::json!(1))
+            .await
+            .unwrap_err();
+        assert!(matches!(err, PubsubError::Forbidden));
+    }
+
+    #[tokio::test]
+    async fn member_with_editor_role_allowed() {
+        let app = AppId::new();
+        let repo = Arc::new(InMemoryPubsubRepo::new(vec![]));
+        let svc = svc(repo, Arc::new(EditorAuthzRepo));
+        svc.publish_durable(&member_cx(app), "t", serde_json::json!(1))
+            .await
+            .unwrap();
+    }
+}

crates/manager-core/src/trigger_repo.rs

@@ -55,6 +55,8 @@ pub enum TriggerKind {
     Cron,
     /// v1.1.5.
     Files,
+    /// v1.1.5.
+    Pubsub,
 }
 
 impl TriggerKind {
@@ -66,6 +68,7 @@ impl TriggerKind {
             Self::DeadLetter => "dead_letter",
             Self::Cron => "cron",
             Self::Files => "files",
+            Self::Pubsub => "pubsub",
         }
     }
 
@@ -77,6 +80,7 @@ impl TriggerKind {
             "dead_letter" => Some(Self::DeadLetter),
             "cron" => Some(Self::Cron),
             "files" => Some(Self::Files),
+            "pubsub" => Some(Self::Pubsub),
             _ => None,
         }
     }
@@ -131,6 +135,8 @@ pub enum TriggerDetails {
         collection_glob: String,
         ops: Vec<FilesEventOp>,
     },
+    /// v1.1.5. A topic pattern: exact, `<prefix>.*`, or `*`.
+    Pubsub { topic_pattern: String },
 }
 
 /// Create payload for a KV trigger. Defaults applied at the admin
@@ -213,6 +219,19 @@ pub struct FilesTriggerMatch {
     pub registered_by_principal: AdminUserId,
 }
 
+/// Create payload for a pubsub trigger (v1.1.5). `topic_pattern` is
+/// validated (exact / `<prefix>.*` / `*`) before insert.
+#[derive(Debug, Clone)]
+pub struct CreatePubsubTrigger {
+    pub script_id: ScriptId,
+    pub topic_pattern: String,
+    pub dispatch_mode: TriggerDispatchMode,
+    pub retry_max_attempts: u32,
+    pub retry_backoff: BackoffShape,
+    pub retry_base_ms: u32,
+    pub registered_by_principal: AdminUserId,
+}
+
 /// One match for the dispatcher's "which KV triggers fire on this
 /// event" lookup. Carries everything the dispatcher needs to construct
 /// the outbox row.
@@ -287,6 +306,13 @@ pub trait TriggerRepo: Send + Sync {
         req: CreateFilesTrigger,
     ) -> Result<Trigger, TriggerRepoError>;
 
+    /// v1.1.5. `topic_pattern` is validated before insert.
+    async fn create_pubsub_trigger(
+        &self,
+        app_id: AppId,
+        req: CreatePubsubTrigger,
+    ) -> Result<Trigger, TriggerRepoError>;
+
     async fn list_for_app(&self, app_id: AppId) -> Result<Vec<Trigger>, TriggerRepoError>;
 
     async fn get(&self, id: TriggerId) -> Result<Option<Trigger>, TriggerRepoError>;
@@ -675,6 +701,66 @@ impl TriggerRepo for PostgresTriggerRepo {
         })
     }
 
+    async fn create_pubsub_trigger(
+        &self,
+        app_id: AppId,
+        req: CreatePubsubTrigger,
+    ) -> Result<Trigger, TriggerRepoError> {
+        // Defense-in-depth validation (the admin endpoint validates too).
+        picloud_shared::validate_topic_pattern(&req.topic_pattern)
+            .map_err(TriggerRepoError::Invalid)?;
+
+        let mut tx = self.pool.begin().await?;
+        let parent: TriggerRow = sqlx::query_as(
+            "INSERT INTO triggers ( \
+                app_id, script_id, kind, enabled, dispatch_mode, \
+                retry_max_attempts, retry_backoff, retry_base_ms, \
+                registered_by_principal \
+             ) VALUES ($1, $2, 'pubsub', TRUE, $3, $4, $5, $6, $7) \
+             RETURNING id, app_id, script_id, kind, enabled, dispatch_mode, \
+                       retry_max_attempts, retry_backoff, retry_base_ms, \
+                       registered_by_principal, created_at, updated_at",
+        )
+        .bind(app_id.into_inner())
+        .bind(req.script_id.into_inner())
+        .bind(req.dispatch_mode.as_str())
+        .bind(i32::try_from(req.retry_max_attempts).unwrap_or(3))
+        .bind(req.retry_backoff.as_str())
+        .bind(i32::try_from(req.retry_base_ms).unwrap_or(1000))
+        .bind(req.registered_by_principal.into_inner())
+        .fetch_one(&mut *tx)
+        .await?;
+
+        sqlx::query(
+            "INSERT INTO pubsub_trigger_details (trigger_id, topic_pattern) VALUES ($1, $2)",
+        )
+        .bind(parent.id)
+        .bind(&req.topic_pattern)
+        .execute(&mut *tx)
+        .await?;
+
+        tx.commit().await?;
+
+        Ok(Trigger {
+            id: parent.id.into(),
+            app_id: parent.app_id.into(),
+            script_id: parent.script_id.into(),
+            kind: TriggerKind::Pubsub,
+            enabled: parent.enabled,
+            dispatch_mode: dispatch_from_str(&parent.dispatch_mode),
+            retry_max_attempts: u32::try_from(parent.retry_max_attempts).unwrap_or(3),
+            retry_backoff: BackoffShape::from_wire(&parent.retry_backoff)
+                .unwrap_or(BackoffShape::Exponential),
+            retry_base_ms: u32::try_from(parent.retry_base_ms).unwrap_or(1000),
+            registered_by_principal: parent.registered_by_principal.into(),
+            created_at: parent.created_at,
+            updated_at: parent.updated_at,
+            details: TriggerDetails::Pubsub {
+                topic_pattern: req.topic_pattern,
+            },
+        })
+    }
+
     async fn list_for_app(&self, app_id: AppId) -> Result<Vec<Trigger>, TriggerRepoError> {
         let parents: Vec<TriggerRow> = sqlx::query_as(
             "SELECT id, app_id, script_id, kind, enabled, dispatch_mode, \
@@ -980,6 +1066,17 @@ async fn hydrate_one(pool: &PgPool, parent: TriggerRow) -> Result<Trigger, Trigg
                 ops,
             }
         }
+        TriggerKind::Pubsub => {
+            let row: PubsubDetailRow = sqlx::query_as(
+                "SELECT topic_pattern FROM pubsub_trigger_details WHERE trigger_id = $1",
+            )
+            .bind(parent.id)
+            .fetch_one(pool)
+            .await?;
+            TriggerDetails::Pubsub {
+                topic_pattern: row.topic_pattern,
+            }
+        }
     };
 
     Ok(Trigger {
@@ -1052,6 +1149,11 @@ struct CronDetailRow {
     last_fired_at: Option<DateTime<Utc>>,
 }
 
+#[derive(sqlx::FromRow)]
+struct PubsubDetailRow {
+    topic_pattern: String,
+}
+
 #[derive(sqlx::FromRow)]
 #[allow(clippy::struct_field_names)]
 struct DlDetailRow {

crates/manager-core/src/triggers_api.rs

@@ -28,7 +28,8 @@ use crate::repo::{ScriptRepository, ScriptRepositoryError};
 use crate::trigger_config::{BackoffShape, TriggerConfig};
 use crate::trigger_repo::{
     CreateCronTrigger, CreateDeadLetterTrigger, CreateDocsTrigger, CreateFilesTrigger,
-    CreateKvTrigger, Trigger, TriggerDispatchMode, TriggerRepo, TriggerRepoError,
+    CreateKvTrigger, CreatePubsubTrigger, Trigger, TriggerDispatchMode, TriggerRepo,
+    TriggerRepoError,
 };
 
 #[derive(Clone)]
@@ -57,6 +58,10 @@ pub fn triggers_router(state: TriggersState) -> Router {
         .route("/apps/{app_id}/triggers/docs", post(create_docs_trigger))
         .route("/apps/{app_id}/triggers/cron", post(create_cron_trigger))
         .route("/apps/{app_id}/triggers/files", post(create_files_trigger))
+        .route(
+            "/apps/{app_id}/triggers/pubsub",
+            post(create_pubsub_trigger),
+        )
         .route(
             "/apps/{app_id}/triggers/dead_letter",
             post(create_dl_trigger),
@@ -349,6 +354,57 @@ async fn create_cron_trigger(
     Ok((StatusCode::CREATED, Json(created)))
 }
 
+/// v1.1.5 pubsub trigger. `topic_pattern` is validated to be exact /
+/// `<prefix>.*` / `*`.
+#[derive(Debug, Deserialize)]
+pub struct CreatePubsubTriggerRequest {
+    pub script_id: ScriptId,
+    pub topic_pattern: String,
+    #[serde(default = "default_dispatch")]
+    pub dispatch_mode: TriggerDispatchMode,
+    #[serde(default)]
+    pub retry_max_attempts: Option<u32>,
+    #[serde(default)]
+    pub retry_backoff: Option<BackoffShape>,
+    #[serde(default)]
+    pub retry_base_ms: Option<u32>,
+}
+
+async fn create_pubsub_trigger(
+    State(s): State<TriggersState>,
+    Extension(principal): Extension<Principal>,
+    Path(app_id): Path<AppId>,
+    Json(input): Json<CreatePubsubTriggerRequest>,
+) -> Result<(StatusCode, Json<Trigger>), TriggersApiError> {
+    ensure_app_exists(&*s.apps, app_id).await?;
+    require(
+        s.authz.as_ref(),
+        &principal,
+        Capability::AppManageTriggers(app_id),
+    )
+    .await?;
+
+    // Validate the topic pattern before touching the script repo so a
+    // bad pattern fails fast with a clear 422.
+    picloud_shared::validate_topic_pattern(&input.topic_pattern)
+        .map_err(TriggersApiError::Invalid)?;
+    validate_trigger_target(&*s.scripts, app_id, input.script_id).await?;
+
+    let req = CreatePubsubTrigger {
+        script_id: input.script_id,
+        topic_pattern: input.topic_pattern,
+        dispatch_mode: input.dispatch_mode,
+        retry_max_attempts: input
+            .retry_max_attempts
+            .unwrap_or(s.config.retry_max_attempts),
+        retry_backoff: input.retry_backoff.unwrap_or(s.config.retry_backoff),
+        retry_base_ms: input.retry_base_ms.unwrap_or(s.config.retry_base_ms),
+        registered_by_principal: principal.user_id,
+    };
+    let created = s.triggers.create_pubsub_trigger(app_id, req).await?;
+    Ok((StatusCode::CREATED, Json(created)))
+}
+
 async fn create_files_trigger(
     State(s): State<TriggersState>,
     Extension(principal): Extension<Principal>,
@@ -542,8 +598,9 @@ mod tests {
     use super::*;
     use crate::app_repo::{AppLookup, AppRepository};
     use crate::trigger_repo::{
-        CreateCronTrigger, CreateFilesTrigger, DeadLetterTriggerMatch, DocsTriggerMatch,
-        FilesTriggerMatch, KvTriggerMatch, Trigger, TriggerDetails, TriggerRepo, TriggerRepoError,
+        CreateCronTrigger, CreateFilesTrigger, CreatePubsubTrigger, DeadLetterTriggerMatch,
+        DocsTriggerMatch, FilesTriggerMatch, KvTriggerMatch, Trigger, TriggerDetails, TriggerRepo,
+        TriggerRepoError,
     };
     use async_trait::async_trait;
     use chrono::Utc;
@@ -703,6 +760,33 @@ mod tests {
             self.inner.lock().await.insert(id, trigger.clone());
             Ok(trigger)
         }
+        async fn create_pubsub_trigger(
+            &self,
+            app_id: AppId,
+            req: CreatePubsubTrigger,
+        ) -> Result<Trigger, TriggerRepoError> {
+            let now = Utc::now();
+            let id = TriggerId::new();
+            let trigger = Trigger {
+                id,
+                app_id,
+                script_id: req.script_id,
+                kind: crate::trigger_repo::TriggerKind::Pubsub,
+                enabled: true,
+                dispatch_mode: req.dispatch_mode,
+                retry_max_attempts: req.retry_max_attempts,
+                retry_backoff: req.retry_backoff,
+                retry_base_ms: req.retry_base_ms,
+                registered_by_principal: req.registered_by_principal,
+                created_at: now,
+                updated_at: now,
+                details: TriggerDetails::Pubsub {
+                    topic_pattern: req.topic_pattern,
+                },
+            };
+            self.inner.lock().await.insert(id, trigger.clone());
+            Ok(trigger)
+        }
         async fn list_for_app(&self, app_id: AppId) -> Result<Vec<Trigger>, TriggerRepoError> {
             Ok(self
                 .inner