docs: Update all documentation for v2.2.0 — 38 endpoints, streaming resolver, proxy

README.md:
- Version badge: 2.1.0 → 2.2.0
- Endpoint count: 33 → 38
- Feature table: added stream URL resolution, M3U8 proxy, season/epMin/epMax filters
- Streaming section: added /stream/resolve, /stream/qualities, /stream/proxy docs
- Project structure: updated controller/extractor/helper file lists
- Dependencies: removed cors, updated dep list
- Changelog highlights: added v2.2.0 entry
- Completed checklist: added 38 endpoints, streaming resolver, proxy, diagnostic sweep

docs/endpoints.md:
- Added 8 new endpoint sections: upcoming, top-rankings, recently-updated, completed,
  stream/resolve, stream/qualities, stream/proxy, stream/ts-proxy

docs/streaming.md:
- Added Stream URL Resolution section (Step 4)
- Added M3U8 quality parsing docs
- Added M3U8 proxy docs with CORS-free playback explanation
- Updated troubleshooting table

docs/architecture.md:
- Updated project structure with all new files (streamResolver, parseListItem, etc.)
- Updated streaming flow diagram with resolver/proxy steps
- Updated dependencies table

docs/examples.md:
- Added curl examples for upcoming, top-rankings, recently-updated, completed
- Added stream resolver, qualities, proxy examples

CHANGELOG.md:
- Updated v2.2.0 entry with M3U8/TS proxy, mirror fix, all bug fixes

agents/:
- Updated api-tester.md: 36 → 38 endpoints
- Updated technical-writer.md: 36 → 38 endpoints
- Updated performance-benchmarker.md: 36 → 38 endpoints

agents/performance-benchmarker.md

@@ -133,7 +133,7 @@ compression({
 
 ## What You Do
 
-1. **Benchmark endpoints** — Measure response times for all 36 endpoints
+1. **Benchmark endpoints** — Measure response times for all 38 endpoints
 2. **Profile cache** — Track hit/miss ratios, measure TTL effectiveness
 3. **Test compression** — Compare compressed vs uncompressed sizes
 4. **Load test** — Simulate concurrent users, check rate limiting