feat(scanners): remove caps for technical_breakout; add missing config entry

- technical_breakout: max_tickers 150 → 0 (reads from OHLCV cache, no need for cap)
- minervini: fix stale default max_tickers 50 → 0 in code (config already 0)
- default_config: add missing technical_breakout scanner config entry

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tradingagents/dataflows/discovery/scanners/minervini.py

@@ -42,7 +42,7 @@ class MinerviniScanner(BaseScanner):
         self.sma_200_slope_days = self.scanner_config.get("sma_200_slope_days", 20)
         self.min_pct_off_low = self.scanner_config.get("min_pct_off_low", 30)
         self.max_pct_from_high = self.scanner_config.get("max_pct_from_high", 25)
-        self.max_tickers = self.scanner_config.get("max_tickers", 50)
+        self.max_tickers = self.scanner_config.get("max_tickers", 0)  # 0 = no cap
 
     def scan(self, state: Dict[str, Any]) -> List[Dict[str, Any]]:
         if not self.is_enabled():

tradingagents/dataflows/discovery/scanners/technical_breakout.py

@@ -22,7 +22,7 @@ class TechnicalBreakoutScanner(BaseScanner):
 
     def __init__(self, config: Dict[str, Any]):
         super().__init__(config)
-        self.max_tickers = self.scanner_config.get("max_tickers", 150)
+        self.max_tickers = self.scanner_config.get("max_tickers", 0)  # 0 = no cap
         self.min_volume_multiple = self.scanner_config.get("min_volume_multiple", 2.0)
         self.lookback_days = self.scanner_config.get("lookback_days", 20)
 
@@ -37,7 +37,8 @@ class TechnicalBreakoutScanner(BaseScanner):
             logger.warning("No tickers loaded for breakout scan")
             return []
 
-        tickers = tickers[: self.max_tickers]
+        if self.max_tickers:
+            tickers = tickers[: self.max_tickers]
 
         cache_dir = self.config.get("discovery", {}).get("ohlcv_cache_dir", "data/ohlcv_cache")
         logger.info(f"Loading OHLCV for {len(tickers)} tickers from cache (3mo)...")

tradingagents/default_config.py

@@ -240,6 +240,14 @@ DEFAULT_CONFIG = {
                 "fetch_market_cap": False,  # Skip for speed (1 NaN out of 30 features)
                 "max_workers": 8,  # Parallel feature computation threads
             },
+            "technical_breakout": {
+                "enabled": True,
+                "pipeline": "momentum",
+                "limit": 10,
+                "max_tickers": 0,  # 0 = no cap (reads from OHLCV cache)
+                "min_volume_multiple": 2.0,  # Min volume vs 20d avg to confirm breakout
+                "lookback_days": 20,  # Days for volume/price lookback
+            },
             "minervini": {
                 "enabled": True,
                 "pipeline": "momentum",