fix: resolve Issue #3 — API stability, error handling & new endpoints

- Added /api/sources/:id path-based endpoint for streaming sources
- Improved Cloudflare detection with proper 503 status codes
- Added timeout handling (15s) with exponential backoff for pipe requests
- Enhanced CORS with Authorization header and rate limit expose headers
- All streaming endpoints now return descriptive error messages
- Pipe health check reports skipped/unconfigured methods separately
- Updated OpenAPI spec with new /sources/{id} route
- Version bumped to 2.3.3

Fixed endpoints: /search, /info/:id, /trending, /filter, /episodes/:id,
/sources/:id (new), /stream, /watch, /download
All endpoints return consistent { success, results/message } format
Proper 400/404/503 responses for invalid inputs and failures

package.json

@@ -1,6 +1,6 @@
 {
   "name": "miruro-api",
-  "version": "2.3.2",
+  "version": "2.3.3",
   "description": "RESTful API for Miruro - Anime streaming data powered by AniList GraphQL and Miruro streaming providers",
   "main": "server.js",
   "scripts": {