build: PaddedCell-style install.mjs + SDK-aligned packaging

install.mjs (--install/--build-only/--uninstall/--openclaw-profile-path),
tsconfig outDir dist/fabric, package.json openclaw file dep + main.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tsconfig.json

@@ -8,7 +8,8 @@
     "esModuleInterop": true,
     "skipLibCheck": true,
     "declaration": false,
-    "outDir": "dist",
+    "resolveJsonModule": true,
+    "outDir": "dist/fabric",
     "rootDir": "."
   },
   "include": ["index.ts", "src/**/*.ts"]