isActive() was a local flag set at start() time, and start() fired playStream
without awaiting the actual stream connection, so 'broadcasting' was reported
even when nothing reached Discord (auto-start log + ffmpeg/NVENC running are not
proof of transmission).
start() now waits for the streaming library's real readiness signal (the stream
connection's WebRTC reaching "connected") before declaring live. On timeout it
logs a compact connection-state diagnostic, tears the local ffmpeg pipeline down
immediately, and returns an explicit failure. isActive() reports the real live
state. Timeout is config-driven (STREAM_READY_TIMEOUT_MS, default 25s). Adds a
test for the timeout/teardown path and updates the existing leak-teardown test.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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