fixed issues namely reveloved around chat

frontend/src/lib/stores/chat.svelte.ts

@@ -50,21 +50,38 @@ class ChatStore {
 	});
 
 	async init(opts: ChatInit) {
+		// Re-initialize whenever the family OR the actor changes (e.g. switching
+		// between parent and child in the same browser session). The store is a
+		// module singleton — keeping the previous actor's identity/subscription
+		// would make one direction's realtime silently dead.
+		const sameIdentity =
+			this.initialized &&
+			this.famId === opts.famId &&
+			this.actorId === opts.actorId &&
+			this.actorType === opts.actorType;
+		if (sameIdentity) return;
+		if (this.initPromise) {
+			await this.initPromise;
+			if (
+				this.initialized &&
+				this.famId === opts.famId &&
+				this.actorId === opts.actorId &&
+				this.actorType === opts.actorType
+			)
+				return;
+		}
+
+		this.cleanup();
+		this.destroyed = false;
 		this.famId = opts.famId;
 		this.actorId = opts.actorId;
 		this.actorType = opts.actorType;
 		this.actorName = opts.actorName;
 		this.actorColor = opts.actorColor;
 		this.pbToken = opts.pbToken || '';
-
-		if (this.initialized && this.famId === opts.famId) return;
-		if (this.initPromise) {
-			await this.initPromise;
-			if (this.initialized && this.famId === opts.famId) return;
-		}
-
-		this.cleanup();
-		this.destroyed = false;
+		this.messages = [];
+		this.typing = {};
+		this.unread = 0;
 		this.lastSeenAt = Date.now();
 
 		this.initPromise = (async () => {