Ingest ~4.2k direct HLS/YouTube feeds (VDOT, MDSHA, DelDOT, Iowa DOT,
OpenCCTV, etc.) from the public GeoJSON catalog. Popup plays HLS via a
CORS-safe playlist proxy + vendored hls.js, YouTube via embed, with
ffmpeg-MJPEG fallback. ALERTWest rows now use a stable camera id so
hourly scrapes do not duplicate.
Adds the documented getCameraDataByLoc API (~10k public wildfire, DOT,
and FAA stills with lat/lon). Masscan will not produce viewable feeds;
this will. Map bbox fetch raised to 2000 markers.
