Sports HLS Proxy Server API
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Available Routes:

1. GET /schedule
   Fetches the live sports schedule from embedhd and returns the event list in JSON,
   enriching each stream with a proxy_url pointing at this server.
   Example: /schedule

2. GET /<stream_id>/index.m3u8
   Resolves and proxies the HLS (.m3u8) media playlist for the given stream id.
   Uses request coalescing and caching (5m0s HLS-URL cache), with auto-retry on a
   stale cached upstream link. segments served straight from the upstream CDN (passthrough).
   Example: /106/index.m3u8

    auth: ?token=... required; direct LAN/IP access exempt