feat: upgrade to v2.0.0 with multi-mirror fallback, new endpoints, and LRU cache

- Add multi-mirror fallback system with 5 mirror domains
- Add LRU cache with configurable TTL per endpoint
- Add response compression (gzip)
- Add Seasons endpoint (/api/seasons/:id)
- Add Watch Order endpoint (/api/watch-order/:id)
- Add Latest Updated endpoint (/api/latest-updated)
- Add Download endpoint (/api/download)
- Add cache stats endpoint (/api/cache/stats)
- Add mirror status/reset endpoints (/api/mirrors, /api/mirrors/reset)
- Add configurable rate limiting with X-RateLimit headers
- Add request timeouts and entity too large handling
- Update documentation with all new endpoints
- Update CHANGELOG.md with v2.0.0 entry
- Update package.json version to 2.0.0
- Add 6 AI agent prompts for development

src/controllers/watchOrder.controller.js

@@ -17,7 +17,7 @@
  */
 
 import { extractWatchOrder } from "../extractors/watchOrder.extractor.js";
-import { getCache, setCache } from "../helper/cache.helper.js";
+import { getCache, setCache, TTL } from "../helper/cache.helper.js";
 
 // ══════════════════════════════════════════════════════════════
 // CONTROLLER: WATCH ORDER
@@ -53,7 +53,7 @@ const getWatchOrder = async (req, res, next) => {
       return res.json({ success: true, results: cached });
     }
     const data = await extractWatchOrder(id);
-    setCache(cacheKey, data);
+    setCache(cacheKey, data, TTL.default);
     res.json({ success: true, results: data });
   } catch (error) {
     next(error);