[eric] strip the ux-trace debug logging from the chat-reopen investigation

frontend/src/shared/state/agentsSlice.ts

@@ -680,7 +680,6 @@ const agentsSlice = createSlice({
           (m) => m.client_message_id === incoming.client_message_id && m.optimistic_status === 'pending',
         );
         if (optIdx >= 0) {
-          console.warn(`[ux-trace] ws-echo-merge sid=${action.payload.sessionId.slice(0, 8)} cmid=${incoming.client_message_id?.slice(-6)}`);
           session.messages[optIdx] = { ...incoming, optimistic_status: undefined };
           return;
         }
@@ -709,7 +708,6 @@ const agentsSlice = createSlice({
     ) {
       const { sessionId, clientMessageId, prompt, contextPaths, forcedTools, attachedSkills, images, hidden } = action.payload;
       const session = state.sessions[sessionId];
-      console.warn(`[ux-trace] optimistic-add sid=${sessionId.slice(0, 8)} cmid=${clientMessageId.slice(-6)} sessionInStore=${!!session} hidden=${!!hidden} status=${session?.status}`);
       if (!session) return;
       // Hidden messages (e.g. internal continuation prompts) skip the optimistic bubble.
       if (hidden) return;

frontend/src/shared/ws/WebSocketManager.ts

@@ -812,7 +812,6 @@ class WebSocketManager {
   }
 
   stopAgent(sessionId: string) {
-    console.warn(`[ux-trace] STOP-SENT sid=${sessionId.slice(0, 8)}\n${new Error().stack}`);
     this.send('agent:stop', { session_id: sessionId });
   }