fix(cli): resolve ESM module resolution for tsx dev mode

- Remove "type": "module" from apps/cli/package.json to avoid
  ESM/CJS interop issues with workspace packages in tsx dev mode
- Configure tsup to output .mjs files (always treated as ESM by Node.js)
- Rename bin entry from chatlab.js to chatlab.mjs
- Change chatlab web default port to 3100 (serve keeps 3110)
- Fix vite plugin: use pnpm instead of npx for tsx invocation

apps/cli/package.json

@@ -1,12 +1,11 @@
 {
   "name": "chatlab-cli",
   "version": "0.1.0",
-  "description": "ChatLab CLI & Service - 聊天记录分析工具",
-  "type": "module",
+  "description": "ChatLab CLI & Service - Chat history analysis tool",
   "bin": {
-    "chatlab": "./bin/chatlab.js"
+    "chatlab": "./bin/chatlab.mjs"
   },
-  "main": "./dist/index.js",
+  "main": "./dist/index.mjs",
   "files": [
     "bin/",
     "dist/",