Each macro gauge selected in the Sentiment desk can now be independently
configured with three alert criteria:
- Seuil bas (≤): alert when value crosses below
- Seuil haut (≥): alert when value crosses above
- Variation % (Δ%): alert when N-day % change exceeds threshold
Frontend: GaugeThresholdConfig component — one row per selected gauge,
compact grid layout with enable toggle + 3 numeric inputs.
Stored in config.gauge_thresholds[gauge_id].
Backend: _check_sentiment() extended — after CBOE signals, reads
macro_gauge_snapshots history, checks each enabled gauge threshold,
emits sentiment market_events with options_note for each breach.
Gauge → affected_assets mapping covers all 32 gauge keys.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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