88b3ecd5e1
- Add real-time value source test: WebSocket endpoint streams get_value() at ~20Hz, frontend renders scrolling time-series chart with min/max/current stats - Add auto-gain for audio value sources: rolling peak normalization with slow decay, sensitivity range increased to 0.1-20.0 - Always show brightness overlay on LED preview when brightness source is set - Refactor ValueStreamManager to shared ref-counted streams (value streams produce scalars, not LED-count-dependent, so sharing is correct) - Simplify acquire/release API: remove consumer_id parameter since streams are no longer consumer-dependent Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>