Consolidate the two stream-check tools into a single master script with
three subcommands:
- check <url> verify one stream (or --live dashboard)
- playlist <path|url> batch an .m3u list -> aggregate JSON (+ per-stream files)
- graph <inputs...> render the JSON as SVG charts
Shared helpers (HTTP, slugify, m3u/JSON handling) are now defined once.
The old --playlist flag becomes the `playlist` subcommand and the bare-URL
form becomes `check <url>`; the streamtest harness is updated accordingly.
Also fix the per-stream SVG rendering black in viewers that do not support
8-digit #rrggbbaa hex: the bitrate area fill and not-PLAYING bands now use
6-digit hex plus a separate fill-opacity attribute.
Docs (English + tools READMEs + STREAMTEST) updated to the new invocation.
Removes stream_queue_check.py and stream_graph.py.
New streamtest-gen / -gen-stop / -backup / streamtest commands: configure the panel once by hand, snapshot the DB, then restore + run repeatably. The container runner rebuilds caches, launches the test-stream-generator, fetches the panel's output m3u for the test line, and runs the checker (aggregate JSON + per-stream logs copied out). STREAMTEST.md documents the flow; docker-compose mounts tools/ and exposes port 8088; ignore out/, fixtures/, graphs/.
Divarion_D