fix(mcp-server): exclude test artifacts and build metadata from npm package (#1342)

Add negation patterns to the files field in package.json to exclude
spec files, tsbuildinfo, and source map files from the published
npm tarball. Reduces packaged files from 1081 to 691.

Author: JeremyDev87

apps/mcp-server/package.json

@@ -34,6 +34,11 @@
   "bin": "./dist/src/cli/cli.js",
   "files": [
     "dist",
+    "!dist/**/*.spec.js",
+    "!dist/**/*.spec.d.ts",
+    "!dist/**/*.tsbuildinfo",
+    "!dist/**/*.js.map",
+    "!dist/**/*.d.ts.map",
     "README.md"
   ],
   "publishConfig": {