docs: Add MA crossover detection to copilot instructions

.github/copilot-instructions.md

@@ -1551,7 +1551,7 @@ const { size, leverage } = getActualPositionSizeForSymbol(driftSymbol, config, q
 
 ### Execute Trade (Production)
 ```
-TradingView alert → n8n Parse Signal Enhanced (extracts metrics + timeframe)
+TradingView alert → n8n Parse Signal Enhanced (extracts metrics + timeframe + MA crossover flags)
   ↓ /api/trading/check-risk [validates quality score ≥81, checks duplicates, per-symbol cooldown]
   ↓ /api/trading/execute
   ↓ normalize symbol (SOLUSDT → SOL-PERP)
@@ -1567,6 +1567,19 @@ TradingView alert → n8n Parse Signal Enhanced (extracts metrics + timeframe)
   ↓ positionManager.addTrade() [ONLY after DB save succeeds - prevents unprotected positions]
 ```
 
+**n8n Parse Signal Enhanced Workflow (Nov 27, 2025):**
+- **File:** `workflows/trading/parse_signal_enhanced.json`
+- **Extracts from TradingView alerts:**
+  - Standard metrics: symbol, direction, timeframe, ATR, ADX, RSI, VOL, POS, MAGAP, signalPrice, indicatorVersion
+  - **MA Crossover Detection (NEW):** `isMACrossover`, `isDeathCross`, `isGoldenCross` flags
+- **Detection logic:** Searches for "crossing" keyword (case-insensitive) in alert message
+  - `isMACrossover = true` if "crossing" found
+  - `isDeathCross = true` if MA50 crossing below MA200 (short/sell direction)
+  - `isGoldenCross = true` if MA50 crossing above MA200 (long/buy direction)
+- **Purpose:** Enables data collection for MA crossover pattern validation (ADX weak→strong hypothesis)
+- **TradingView Alert Setup:** "MA50&200 Crossing" condition, once per bar close, 5-minute chart
+- **Goal:** Collect 5-10 crossover examples to validate v9's early detection pattern (signals 35 min before actual cross)
+
 **CRITICAL EXECUTION ORDER (Nov 26, 2025 - Multi-Timeframe Quality Scoring):**
 Quality scoring MUST happen BEFORE timeframe filtering - this is NOT arbitrary:
 - All timeframes (5min, 15min, 1H, 4H, Daily) need real quality scores for analysis