ani-web: FastAPI + HLS proxy over anidb.app, vanilla UI

- upstream.py: Cloudflare-proof fetchers (curl_cffi), self-checking
- app.py: /api/* routes + /stream/{token} HLS proxy (CDN has no CORS)
- static/: search -> detail/seasons/episodes -> hls.js player, history
- verified end-to-end: search chainsaw man -> ep1 dub 1080p segment

.gitignore

@@ -0,0 +1,3 @@
+.venv/
+__pycache__/
+*.pyc