Add a live feed to view Timmy's internal state and agent activity

Introduces a new CLI script `timmy-watch` to establish a WebSocket connection and display real-time updates of Timmy's status, agent states, and recent events.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 90c7a60b-2c61-4699-b5c6-6a1ac7469a4d
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: 56ce6fae-6759-4857-bf0c-606a96a71bdb
Replit-Helium-Checkpoint-Created: true

scripts/package.json

@@ -5,6 +5,7 @@
   "type": "module",
   "scripts": {
     "hello": "tsx ./src/hello.ts",
+    "timmy-watch": "tsx ./src/timmy-watch.ts",
     "typecheck": "tsc -p tsconfig.json --noEmit"
   },
   "devDependencies": {