Move source files to src/

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -5,9 +5,9 @@
   "main": "index.js",
   "type": "module",
   "scripts": {
-    "start": "tsx server.ts",
-    "login": "tsx login.ts",
-    "inspect": "tsx inspect.ts",
+    "start": "tsx src/server.ts",
+    "login": "tsx src/login.ts",
+    "inspect": "tsx src/inspect.ts",
     "typecheck": "tsc --noEmit"
   },
   "keywords": [],