fix(cli): store annonces inter-agent borné par projectId avec reset et réhydratation busy au changement de projet — #236

frontend/src/features/announcements/AnnouncementsProvider.tsx

@@ -1,5 +1,5 @@
 /**
- * `AnnouncementsProvider` — the live, app-wide store for inter-agent announcements
+ * `AnnouncementsProvider` — the live, project-scoped store for inter-agent announcements
  * (ticket #4, F1 wiring). Subscribes **once** to the domain-event stream via the
  * {@link SystemGateway} and folds two orthogonal signals:
  *
@@ -22,8 +22,9 @@
  * busy is the sole lifecycle authority, which is exactly what we want.)
  *
  * Consumers read via {@link useTargetAnnouncements} (F3) and
- * {@link useRequesterAnnouncements} (F2). The store is never persisted — it is
- * rebuilt live from the event stream and the read-model snapshot.
+ * {@link useRequesterAnnouncements} (F2). The store is never persisted and is
+ * reset whenever the provider's project changes; it is rebuilt live from the
+ * event stream and the read-model snapshot for that project.
  */
 
 import {
@@ -76,7 +77,13 @@ const DEFAULT_STORE: AnnouncementsStore = {
 
 const AnnouncementsContext = createContext<AnnouncementsStore | null>(null);
 
-export function AnnouncementsProvider({ children }: { children: ReactNode }) {
+export function AnnouncementsProvider({
+  projectId,
+  children,
+}: {
+  projectId: string | null;
+  children: ReactNode;
+}) {
   const { system } = useGateways();
   const [index, setIndex] = useState<AnnouncementIndex>(emptyAnnouncementIndex);
   const [busy, setBusy] = useState<BusyMap>({});
@@ -87,15 +94,21 @@ export function AnnouncementsProvider({ children }: { children: ReactNode }) {
     setBusy((prev) => (agentId in prev ? prev : { ...prev, [agentId]: value }));
   }, []);
 
+  useEffect(() => {
+    setIndex(emptyAnnouncementIndex());
+    setBusy({});
+  }, [projectId]);
+
   useEffect(() => {
     // `system` may be absent in unit tests injecting a partial gateway set.
-    if (!system) return;
+    if (!system || !projectId) return;
     let unsubscribe: (() => void) | undefined;
     let cancelled = false;
 
     void system
       .onDomainEvent((event) => {
         if (event.type === "agentAnnouncement") {
+          if (event.projectId !== projectId) return;
           // Content of the overlay/preview.
           setIndex((prev) =>
             appendAnnouncement(prev, {
@@ -127,7 +140,7 @@ export function AnnouncementsProvider({ children }: { children: ReactNode }) {
       cancelled = true;
       unsubscribe?.();
     };
-  }, [system]);
+  }, [system, projectId]);
 
   const store = useMemo<AnnouncementsStore>(
     () => ({ index, busy, seedBusy }),