feat(v1.1.6): realtime channels + v1.1.5 follow-ups + version bumps

Server-side realtime SSE on per-app pub/sub topics, plus the three
v1.1.5 follow-ups and the version bumps.

Realtime:
- topics registry (0021) + admin endpoints + Capability::AppTopicManage
  (-> app:admin; no new scope).
- GET /realtime/topics/{topic} SSE endpoint (orchestrator-core data
  plane): Host -> app, RealtimeAuthority gate (404 missing/internal,
  401 bad/absent token), broadcast::Receiver stream + heartbeat.
- RealtimeBroadcaster / RealtimeEvent / RealtimeAuthority traits
  (picloud-shared); InProcessBroadcaster + GC (orchestrator-core);
  DB-backed RealtimeAuthorityImpl (manager-core). Publish path fans out
  to in-process subscribers after the durable outbox commit (best-effort,
  panic-isolated).
- HMAC subscriber tokens (subscriber_token.rs) + app_secrets table (0022)
  + pubsub::subscriber_token SDK (schema 1.6 -> 1.7). TTL clamp + env
  overrides.
- Dashboard Topics tab (register/list/edit/delete, prominent external
  badge, flip confirmation).

v1.1.5 follow-ups:
- Empty blobs accepted (NewFile/FileUpdate::validate) + round-trip test.
- Orphan *.tmp.* sweeper (spawn_files_orphan_sweep).
- Dispatcher e2e tests, one per trigger kind (DATABASE_URL-gated).

Versions: workspace 1.1.6, SDK 1.7, dashboard 0.12.0. Schema-snapshot
golden re-blessed.

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

crates/manager-core/src/pubsub_service.rs

@@ -11,20 +11,106 @@
 use std::sync::Arc;
 
 use async_trait::async_trait;
-use picloud_shared::{PubsubError, PubsubService, SdkCallCx, TriggerEvent};
+use picloud_shared::subscriber_token::{self, TokenClaims};
+use picloud_shared::{
+    PubsubError, PubsubService, RealtimeBroadcaster, RealtimeEvent, SdkCallCx, TriggerEvent,
+};
 
+use crate::app_secrets_repo::AppSecretsRepo;
 use crate::authz::{self, AuthzRepo, Capability};
 use crate::pubsub_repo::{PublishCtx, PubsubRepo, PubsubRepoError};
+use crate::topic_repo::TopicRepo;
+
+/// TTL bounds (seconds) for `pubsub::subscriber_token`. Env-overridable
+/// via `PICLOUD_SUBSCRIBER_TOKEN_TTL_{MIN,MAX,DEFAULT}_SEC`.
+#[derive(Debug, Clone, Copy)]
+pub struct SubscriberTokenConfig {
+    pub min_ttl: i64,
+    pub max_ttl: i64,
+    pub default_ttl: i64,
+}
+
+impl SubscriberTokenConfig {
+    #[must_use]
+    pub const fn conservative() -> Self {
+        Self {
+            min_ttl: 10,
+            max_ttl: 86_400,
+            default_ttl: 3_600,
+        }
+    }
+
+    /// Load from env, falling back to the conservative defaults for any
+    /// missing / invalid value.
+    #[must_use]
+    pub fn from_env() -> Self {
+        let mut c = Self::conservative();
+        load_i64(&mut c.min_ttl, "PICLOUD_SUBSCRIBER_TOKEN_TTL_MIN_SEC");
+        load_i64(&mut c.max_ttl, "PICLOUD_SUBSCRIBER_TOKEN_TTL_MAX_SEC");
+        load_i64(
+            &mut c.default_ttl,
+            "PICLOUD_SUBSCRIBER_TOKEN_TTL_DEFAULT_SEC",
+        );
+        c
+    }
+}
+
+impl Default for SubscriberTokenConfig {
+    fn default() -> Self {
+        Self::conservative()
+    }
+}
+
+fn load_i64(dst: &mut i64, key: &str) {
+    if let Ok(v) = std::env::var(key) {
+        match v.parse::<i64>() {
+            Ok(n) if n > 0 => *dst = n,
+            _ => tracing::warn!(env = key, value = %v, "ignoring invalid token-ttl value"),
+        }
+    }
+}
 
 pub struct PubsubServiceImpl {
     repo: Arc<dyn PubsubRepo>,
     authz: Arc<dyn AuthzRepo>,
+    // Realtime extras (v1.1.6) — optional so the existing two-arg
+    // constructor (and its unit tests) keep working without them. The
+    // production binary attaches them via `with_realtime`.
+    realtime: Option<Arc<dyn RealtimeBroadcaster>>,
+    topics: Option<Arc<dyn TopicRepo>>,
+    secrets: Option<Arc<dyn AppSecretsRepo>>,
+    token_config: SubscriberTokenConfig,
 }
 
 impl PubsubServiceImpl {
     #[must_use]
     pub fn new(repo: Arc<dyn PubsubRepo>, authz: Arc<dyn AuthzRepo>) -> Self {
-        Self { repo, authz }
+        Self {
+            repo,
+            authz,
+            realtime: None,
+            topics: None,
+            secrets: None,
+            token_config: SubscriberTokenConfig::conservative(),
+        }
+    }
+
+    /// Attach the v1.1.6 realtime surface: the in-process broadcaster
+    /// (publish fan-out to SSE subscribers), the topic registry +
+    /// app-secrets repo (subscriber-token minting), and the TTL config.
+    #[must_use]
+    pub fn with_realtime(
+        mut self,
+        broadcaster: Arc<dyn RealtimeBroadcaster>,
+        topics: Arc<dyn TopicRepo>,
+        secrets: Arc<dyn AppSecretsRepo>,
+        token_config: SubscriberTokenConfig,
+    ) -> Self {
+        self.realtime = Some(broadcaster);
+        self.topics = Some(topics);
+        self.secrets = Some(secrets);
+        self.token_config = token_config;
+        self
     }
 
     async fn check_publish(&self, cx: &SdkCallCx) -> Result<(), PubsubError> {
@@ -60,12 +146,15 @@ impl PubsubService for PubsubServiceImpl {
         }
         self.check_publish(cx).await?;
 
-        // `published_at` is stamped on the manager side so every
-        // delivery agrees on one instant.
+        // `published_at` is stamped once on the manager side so every
+        // delivery path — durable triggers AND the realtime broadcast —
+        // agrees on one instant. The message is cloned into the trigger
+        // event so the realtime path can reuse the original.
+        let published_at = chrono::Utc::now();
         let event = TriggerEvent::Pubsub {
             topic: topic.to_string(),
-            message,
-            published_at: chrono::Utc::now(),
+            message: message.clone(),
+            published_at,
         };
         let payload = serde_json::to_value(&event)
             .map_err(|e| PubsubError::Rejected(format!("event serialize: {e}")))?;
@@ -76,12 +165,115 @@ impl PubsubService for PubsubServiceImpl {
             trigger_depth: cx.trigger_depth,
             root_execution_id: cx.root_execution_id,
         };
+        // Order (design notes §8): transactional outbox fan-out + commit
+        // FIRST; only then the best-effort realtime broadcast. If the
+        // fan-out fails, the publish throws and no broadcast happens. If
+        // the broadcast fails after a committed fan-out, trigger
+        // deliveries still happen and only SSE subscribers miss this
+        // event (no replay in v1.1.6).
+        //
         // No matching triggers → 0 rows written, publish still succeeds.
         self.repo
             .fan_out_publish(publish_ctx, topic, payload)
             .await?;
+
+        // Non-transactional, best-effort fan-out to in-process SSE
+        // subscribers. Run on a child task so a panicking broadcaster
+        // (or a future cluster-mode resolver fault) becomes a warn log,
+        // never a failed publish — the durable deliveries already
+        // committed above.
+        if let Some(realtime) = self.realtime.clone() {
+            let app_id = cx.app_id;
+            let topic_owned = topic.to_string();
+            let realtime_event = RealtimeEvent {
+                topic: topic_owned.clone(),
+                message,
+                published_at,
+            };
+            let handle = tokio::spawn(async move {
+                realtime.publish(app_id, &topic_owned, realtime_event).await;
+            });
+            if let Err(e) = handle.await {
+                tracing::warn!(error = %e, "realtime broadcast failed; publish unaffected");
+            }
+        }
         Ok(())
     }
+
+    async fn mint_subscriber_token(
+        &self,
+        cx: &SdkCallCx,
+        topics: Vec<String>,
+        ttl_seconds: Option<i64>,
+    ) -> Result<String, PubsubError> {
+        // Anonymous (public-HTTP) scripts can't mint — that would bypass
+        // the token-minting authz boundary.
+        let Some(principal) = cx.principal.as_ref() else {
+            return Err(PubsubError::SubscriberToken(
+                "pubsub::subscriber_token: requires an authenticated principal \
+                 (a script on a public route cannot mint tokens)"
+                    .into(),
+            ));
+        };
+        // Minting reuses the existing pub/sub publish capability (no new
+        // scope — the seven-scope commitment holds).
+        authz::require(
+            &*self.authz,
+            principal,
+            Capability::AppPubsubPublish(cx.app_id),
+        )
+        .await
+        .map_err(|_| PubsubError::Forbidden)?;
+
+        let (Some(topic_repo), Some(secrets)) = (self.topics.as_ref(), self.secrets.as_ref())
+        else {
+            return Err(PubsubError::Unavailable(
+                "subscriber tokens are not wired in".into(),
+            ));
+        };
+
+        if topics.is_empty() {
+            return Err(PubsubError::SubscriberToken(
+                "pubsub::subscriber_token: topics list must not be empty".into(),
+            ));
+        }
+
+        let ttl = ttl_seconds.unwrap_or(self.token_config.default_ttl);
+        if ttl < self.token_config.min_ttl || ttl > self.token_config.max_ttl {
+            return Err(PubsubError::SubscriberToken(format!(
+                "pubsub::subscriber_token: ttl_seconds must be between {} and {}",
+                self.token_config.min_ttl, self.token_config.max_ttl
+            )));
+        }
+
+        // Every requested topic must be registered as externally
+        // subscribable in this app — fail fast rather than mint a token
+        // that won't work.
+        for name in &topics {
+            let registered = topic_repo
+                .get(cx.app_id, name)
+                .await
+                .map_err(|e| PubsubError::Unavailable(e.to_string()))?;
+            if !registered.map(|t| t.external_subscribable).unwrap_or(false) {
+                return Err(PubsubError::SubscriberToken(format!(
+                    "pubsub::subscriber_token: topic {name} is not externally subscribable"
+                )));
+            }
+        }
+
+        let key = secrets
+            .get_or_create_signing_key(cx.app_id)
+            .await
+            .map_err(|e| PubsubError::Unavailable(e.to_string()))?;
+        let now = chrono::Utc::now().timestamp();
+        let claims = TokenClaims {
+            app_id: cx.app_id,
+            topics,
+            exp: now.saturating_add(ttl),
+            iat: now,
+        };
+        Ok(subscriber_token::sign(&key, &claims))
+    }
 }
 
 // ----------------------------------------------------------------------------
@@ -317,4 +509,218 @@ mod tests {
             .await
             .unwrap();
     }
+
+    // ------------------------------------------------------------------
+    // v1.1.6 realtime broadcast + subscriber-token minting
+    // ------------------------------------------------------------------
+
+    use crate::app_secrets_repo::{AppSecretsRepo, AppSecretsRepoError};
+    use crate::topic_repo::{Topic, TopicAuthMode, TopicRepo, TopicRepoError};
+    use picloud_orchestrator_core::InProcessBroadcaster;
+    use picloud_shared::{RealtimeBroadcaster, RealtimeEvent};
+
+    /// Topic repo fake: returns the configured topics as registered +
+    /// externally-subscribable (unless absent).
+    struct FakeTopicRepo(Vec<String>);
+    #[async_trait]
+    impl TopicRepo for FakeTopicRepo {
+        async fn create(
+            &self,
+            _: AppId,
+            _: &str,
+            _: bool,
+            _: TopicAuthMode,
+        ) -> Result<Topic, TopicRepoError> {
+            unimplemented!()
+        }
+        async fn list(&self, _: AppId) -> Result<Vec<Topic>, TopicRepoError> {
+            unimplemented!()
+        }
+        async fn get(&self, _: AppId, name: &str) -> Result<Option<Topic>, TopicRepoError> {
+            Ok(self.0.iter().any(|t| t == name).then(|| Topic {
+                name: name.to_string(),
+                external_subscribable: true,
+                auth_mode: TopicAuthMode::Token,
+                created_at: chrono::Utc::now(),
+                updated_at: chrono::Utc::now(),
+            }))
+        }
+        async fn update(
+            &self,
+            _: AppId,
+            _: &str,
+            _: Option<bool>,
+            _: Option<TopicAuthMode>,
+        ) -> Result<Option<Topic>, TopicRepoError> {
+            unimplemented!()
+        }
+        async fn delete(&self, _: AppId, _: &str) -> Result<bool, TopicRepoError> {
+            unimplemented!()
+        }
+    }
+
+    #[derive(Default)]
+    struct FakeSecrets;
+    #[async_trait]
+    impl AppSecretsRepo for FakeSecrets {
+        async fn get_or_create_signing_key(
+            &self,
+            _: AppId,
+        ) -> Result<Vec<u8>, AppSecretsRepoError> {
+            Ok(vec![42u8; 32])
+        }
+        async fn signing_key(&self, _: AppId) -> Result<Option<Vec<u8>>, AppSecretsRepoError> {
+            Ok(Some(vec![42u8; 32]))
+        }
+    }
+
+    /// Broadcaster that panics on publish — proves a broadcast fault
+    /// can't fail the publish.
+    struct PanicBroadcaster;
+    #[async_trait]
+    impl RealtimeBroadcaster for PanicBroadcaster {
+        async fn subscribe(
+            &self,
+            _: AppId,
+            _: &str,
+        ) -> Result<tokio::sync::broadcast::Receiver<RealtimeEvent>, picloud_shared::BroadcasterError>
+        {
+            unimplemented!()
+        }
+        async fn publish(&self, _: AppId, _: &str, _: RealtimeEvent) {
+            panic!("boom");
+        }
+        async fn drop_topic(&self, _: AppId, _: &str) {}
+    }
+
+    fn realtime_svc(
+        repo: Arc<dyn PubsubRepo>,
+        broadcaster: Arc<dyn RealtimeBroadcaster>,
+        topics: Vec<String>,
+    ) -> PubsubServiceImpl {
+        PubsubServiceImpl::new(repo, Arc::new(EditorAuthzRepo)).with_realtime(
+            broadcaster,
+            Arc::new(FakeTopicRepo(topics)),
+            Arc::new(FakeSecrets),
+            SubscriberTokenConfig::conservative(),
+        )
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+    async fn publish_broadcasts_to_in_process_subscribers() {
+        let app = AppId::new();
+        let broadcaster = Arc::new(InProcessBroadcaster::new(16));
+        let mut rx = broadcaster.subscribe(app, "chat").await.unwrap();
+        let svc = realtime_svc(
+            Arc::new(InMemoryPubsubRepo::new(vec![])),
+            broadcaster,
+            vec![],
+        );
+        svc.publish_durable(&anon_cx(app), "chat", serde_json::json!({ "hi": 1 }))
+            .await
+            .unwrap();
+        let ev = rx.recv().await.unwrap();
+        assert_eq!(ev.topic, "chat");
+        assert_eq!(ev.message, serde_json::json!({ "hi": 1 }));
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+    async fn panicking_broadcaster_does_not_fail_publish() {
+        let app = AppId::new();
+        let svc = realtime_svc(
+            Arc::new(InMemoryPubsubRepo::new(vec![])),
+            Arc::new(PanicBroadcaster),
+            vec![],
+        );
+        // The outbox fan-out committed; the broadcast panic is swallowed.
+        svc.publish_durable(&anon_cx(app), "chat", serde_json::json!(1))
+            .await
+            .expect("publish must succeed despite broadcast panic");
+    }
+
+    fn mint_svc(topics: Vec<String>) -> PubsubServiceImpl {
+        realtime_svc(
+            Arc::new(InMemoryPubsubRepo::new(vec![])),
+            Arc::new(picloud_shared::NoopRealtimeBroadcaster),
+            topics,
+        )
+    }
+
+    #[tokio::test]
+    async fn mint_returns_token_scoped_to_topics() {
+        let app = AppId::new();
+        let svc = mint_svc(vec!["chat".into(), "notify".into()]);
+        let token = svc
+            .mint_subscriber_token(
+                &member_cx(app),
+                vec!["chat".into(), "notify".into()],
+                Some(120),
+            )
+            .await
+            .unwrap();
+        // Verify with the fake key; claims carry the topics + expiry.
+        let claims = subscriber_token::verify(&[42u8; 32], &token, chrono::Utc::now().timestamp())
+            .expect("token verifies");
+        assert_eq!(claims.app_id, app);
+        assert!(claims.allows_topic("chat") && claims.allows_topic("notify"));
+        assert!(claims.exp > claims.iat);
+    }
+
+    #[tokio::test]
+    async fn mint_anonymous_principal_throws() {
+        let app = AppId::new();
+        let svc = mint_svc(vec!["chat".into()]);
+        let err = svc
+            .mint_subscriber_token(&anon_cx(app), vec!["chat".into()], None)
+            .await
+            .unwrap_err();
+        assert!(matches!(err, PubsubError::SubscriberToken(_)));
+    }
+
+    #[tokio::test]
+    async fn mint_empty_topics_throws() {
+        let app = AppId::new();
+        let svc = mint_svc(vec!["chat".into()]);
+        let err = svc
+            .mint_subscriber_token(&member_cx(app), vec![], None)
+            .await
+            .unwrap_err();
+        assert!(matches!(err, PubsubError::SubscriberToken(_)));
+    }
+
+    #[tokio::test]
+    async fn mint_ttl_below_min_and_above_max_throw() {
+        let app = AppId::new();
+        let svc = mint_svc(vec!["chat".into()]);
+        for bad in [Some(5), Some(90_000)] {
+            let err = svc
+                .mint_subscriber_token(&member_cx(app), vec!["chat".into()], bad)
+                .await
+                .unwrap_err();
+            assert!(
+                matches!(err, PubsubError::SubscriberToken(_)),
+                "ttl {bad:?}"
+            );
+        }
+    }
+
+    #[tokio::test]
+    async fn mint_unregistered_topic_throws_with_message() {
+        let app = AppId::new();
+        // "chat" registered; "secret" is not.
+        let svc = mint_svc(vec!["chat".into()]);
+        let err = svc
+            .mint_subscriber_token(&member_cx(app), vec!["chat".into(), "secret".into()], None)
+            .await
+            .unwrap_err();
+        match err {
+            PubsubError::SubscriberToken(msg) => {
+                assert!(
+                    msg.contains("topic secret is not externally subscribable"),
+                    "got: {msg}"
+                );
+            }
+            other => panic!("expected SubscriberToken, got {other:?}"),
+        }
+    }
 }