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## Task Task #20: Timmy responds to Workshop input bar — make the "Say something to Timmy…" input bar actually trigger an AI response shown in Timmy's speech bubble. ## What was built ### Server (artifacts/api-server/src/lib/agent.ts) - Added `chatReply(userText)` method to AgentService - Uses claude-haiku (cheaper eval model) with a wizard persona system prompt - 150-token limit so replies fit in the speech bubble - Stub mode: returns one of 4 wizard-themed canned replies after 400ms delay - Real mode: calls Anthropic with wizard persona, truncates to 250 chars ### Server (artifacts/api-server/src/routes/events.ts) - Imported agentService - Added per-visitor rate limit system: 3 replies/minute per visitorId (in-memory Map) - Added broadcastToAll() helper for broadcasting to all WS clients - Updated visitor_message handler: 1. Broadcasts visitor message to all watchers as before 2. Checks rate limit — if exceeded, sends polite "I need a moment…" reply 3. Fire-and-forget async AI call: - Broadcasts agent_state: gamma=working (crystal ball pulses) - Calls agentService.chatReply() - Broadcasts agent_state: gamma=idle - Broadcasts chat: agentId=timmy, text=reply to ALL clients - Logs world event "visitor:reply" ### Frontend (the-matrix/js/websocket.js) - Updated case 'chat' handler to differentiate message sources: - agentId === 'timmy': speech bubble + event log entry "Timmy: <text>" - agentId === 'visitor': event log only (don't hijack speech bubble) - everything else (delta/alpha/beta payment notifications): speech bubble ## What was already working (no change needed) - Enter key on input bar (ui.js already had keydown listener) - Input clearing after send (already in ui.js) - Speech bubble rendering (setSpeechBubble already existed in agents.js) - WebSocket sendVisitorMessage already exported from websocket.js ## Tests - 27/27 testkit PASS (no regressions) - TypeScript: 0 errors - Vite build: clean (the-matrix rebuilt)