feat(cli): add CI gating flags for dependency checks

* Introduced --fail-on-diff and --fail-on-missing options
* Updated run() to return a result summary
* Enhanced README and tests to cover new functionality

tsconfig.json

@@ -6,7 +6,7 @@
     "target": "ES6",
     "lib": ["DOM", "ESNext"],
     "module": "ESNext",
-    "moduleResolution": "Node",
+    "moduleResolution": "Bundler",
     "jsx": "react-jsx",
     "resolveJsonModule": true,
     "esModuleInterop": true,