chore: initial commit

Laimiao agent v2 service: agent orchestration, sessions, billing,
gateway client, skills catalog, auth, config, plus tests.

tsconfig.build.json

@@ -0,0 +1,10 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "dist",
+    "noEmit": false
+  },
+  "include": ["src/**/*.ts"],
+  "exclude": ["node_modules", "dist", "tests"]
+}