RestGuard: Local API Request Interceptor, Mock Response Override (200/402/429/500) & cURL Generator Chrome Extension (MV3 + Source)

Replace $15–$29/mo cloud-locked proxy extensions (like Requestly Pro) with a 100% local, zero-telemetry Manifest V3 Chrome Extension + Full Unminified Source Code. RestGuard hooks window.fetch in the page MAIN world to: (1) Capture live REST/GraphQL requests with HTTP status, latency (ms), and payload previews, (2) Deterministically override matching URL patterns with custom HTTP status codes (200, 402 Payment Required, 429 Rate Limit, 500 Server Error) and custom JSON bodies directly in the browser without backend changes, and (3) Export any live request to a ready-to-run cURL command in one click.