feat: improve messaging, chat unread states, and social discovery

src/app/(app)/app/profile/page.tsx

@@ -8,6 +8,8 @@ export default async function ProfilePage() {
   return (
     <ProfileDashboard
       displayName={displayName}
+      initialDiscoverable={profile?.is_discoverable ?? true}
+      userId={profile?.id ?? null}
       username={profile?.username ?? null}
     />
   );

src/components/app-workspace.tsx

@@ -38,6 +38,12 @@ export function AppWorkspace({
       : "Student";
   const username =
     authState.mode === "authenticated" ? authState.profile.username : null;
+  const userId =
+    authState.mode === "authenticated" ? authState.profile.id : null;
+  const isDiscoverable =
+    authState.mode === "authenticated"
+      ? authState.profile.is_discoverable
+      : true;
 
   if (!activeView) {
     return fallback;
@@ -85,7 +91,12 @@ export function AppWorkspace({
         id="profile"
         key={`profile:${resetKeys["/app/profile"] ?? 0}`}
       >
-        <ProfileDashboard displayName={displayName} username={username} />
+        <ProfileDashboard
+          displayName={displayName}
+          initialDiscoverable={isDiscoverable}
+          userId={userId}
+          username={username}
+        />
       </WorkspacePanel>
     </div>
   );

src/components/friends/direct-messages.tsx

@@ -68,12 +68,16 @@ export function DirectMessages({
   friends,
   initialFriendId,
   onConversationClosed,
+  onConversationOpenChange,
+  onUnreadCountChange,
   remoteClient,
 }: {
   currentUserId: string | null;
   friends: SocialFriend[];
   initialFriendId: string | null;
   onConversationClosed: () => void;
+  onConversationOpenChange?: (open: boolean) => void;
+  onUnreadCountChange?: (count: number) => void;
   remoteClient: SupabaseClient | null;
 }) {
   const [conversations, setConversations] = useState<Conversation[]>([]);
@@ -173,6 +177,21 @@ export function DirectMessages({
     friendsRef.current = friends;
   }, [friends]);
 
+  useEffect(() => {
+    onConversationOpenChange?.(Boolean(selectedFriend));
+  }, [onConversationOpenChange, selectedFriend]);
+
+  useEffect(() => {
+    if (!hasLoadedConversationsRef.current) return;
+
+    onUnreadCountChange?.(
+      conversations.reduce(
+        (total, conversation) => total + conversation.unreadCount,
+        0,
+      ),
+    );
+  }, [conversations, isLoadingConversations, onUnreadCountChange]);
+
   const markConversationRead = useCallback(
     async (friendId: string) => {
       if (!remoteClient || !currentUserId) return;
@@ -449,6 +468,7 @@ export function DirectMessages({
   }
 
   function openConversation(friendId: string) {
+    onConversationOpenChange?.(true);
     setSelectedFriendId(friendId);
     setMessages([]);
     setFeedback(null);
@@ -466,6 +486,7 @@ export function DirectMessages({
             aria-label="Back to messages"
             className="mac-focus inline-flex h-10 w-10 shrink-0 items-center justify-center rounded-md text-[var(--color-text-muted)]"
             onClick={() => {
+              onConversationOpenChange?.(false);
               setSelectedFriendId(null);
               setMessages([]);
               setFeedback(null);