feat(ai): upgrade pi-ai from @mariozechner 0.54 to @earendil-works 0.74

- Replace @mariozechner/pi-ai and pi-agent-core with @earendil-works scope
- Adapt to AgentTool.execute() params type change (Record → unknown)
- Migrate Agent constructor to use initialState for systemPrompt/tools/messages
- Update onPayload callback signature to include model parameter
- Filter finalMessages with isPiMessage() for new AgentMessage union type
- Use state.errorMessage instead of deprecated state.error

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/cli/package.json

@@ -2,6 +2,7 @@
   "name": "chatlab-cli",
   "version": "0.0.0",
   "description": "ChatLab CLI & Service - Chat history analysis tool",
+  "type": "module",
   "bin": {
     "chatlab": "bin/chatlab.mjs"
   },
@@ -46,8 +47,8 @@
   "dependencies": {
     "@fastify/multipart": "^10.0.0",
     "@fastify/static": "^9.1.3",
-    "@mariozechner/pi-agent-core": "0.54.2",
-    "@mariozechner/pi-ai": "0.54.2",
+    "@earendil-works/pi-agent-core": "0.74.2",
+    "@earendil-works/pi-ai": "0.74.2",
     "@modelcontextprotocol/sdk": "^1.12.1",
     "better-sqlite3": "^12.4.6",
     "commander": "^13.1.0",