feat: add task management CLI and improve activity curation

- Add task store with dependency tracking and CLI (packages/server/src/tasks/)
- Extract principal param logic to shared util for server/app reuse
- Improve activity curator: collapse timeline, dedupe tool calls, simpler output
- Add MessageInput ref for focus control after agent cancel
- Include recent activity in wait timeout messages

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packages/server/package.json

@@ -3,6 +3,9 @@
   "version": "0.1.0",
   "description": "Paseo backend server",
   "type": "module",
+  "exports": {
+    "./utils/tool-call-parsers": "./src/utils/tool-call-parsers.ts"
+  },
   "scripts": {
     "dev": "NODE_ENV=development tsx scripts/dev-runner.ts",
     "dev:tsx": "NODE_ENV=development tsx watch --ignore '**/*.timestamp-*' src/server/index.ts",