Strategy: ORB-first + STRATEGY_SETUPS config; harness gapper filter + per-setup attribution

Sweep over 172 real gapper sessions (16 days) with a per-setup breakdown found
the opening-range breakout is the ONLY profitable setup (+0.25R); every slow
pattern loses (bull_flag -$78k @ ~42min is the worst). Running ORB-ONLY flips
the book from -$95k to +$7.4k AND enters ~11 min earlier (23 vs 34 min avg).

- classify_setup prefers the ORB when valid and honors STRATEGY_SETUPS env
  (comma-sep setup values) to restrict active setups; .env defaults to
  STRATEGY_SETUPS=opening_range_break (ORB-only).
- BacktestEngine Trade.setup_type captured for per-setup attribution.
- learn_params load_sessions filters to gapper sessions (mimics live scanner) so
  the backtest trades the same universe the system would.

75/75 tests green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.env.example

@@ -72,6 +72,9 @@ WATCHER_SYMBOLS=AAPL,TSLA,NVDA,AMD,SOFI
 # Price band for auto-discovered candidates (Ross Cameron default 1-20).
 WATCHER_PRICE_MIN=1
 WATCHER_PRICE_MAX=20
+# Active strategy setups (comma-separated). The backtest sweep found the
+# opening-range breakout is the only profitable one; empty = all setups.
+STRATEGY_SETUPS=opening_range_break
 
 # Live minute-bar ingestion (feeds the watcher with active market data)
 LIVE_BARS_ENABLED=1

learn_params.py

@@ -49,9 +49,19 @@ def load_sessions(con):
             bars = bars[bars["is_regular_hours"] == True].reset_index(drop=True)  # noqa: E712
         if len(bars) < 20:
             continue
-        out.append((symbol, sess, bars,
-                    query_previous_close(con, symbol, sess),
-                    query_avg_daily_volume(con, symbol, sess)))
+        pc = query_previous_close(con, symbol, sess)
+        adv = query_avg_daily_volume(con, symbol, sess)
+        # Mimic the LIVE scanner: only keep sessions that actually gapped up or
+        # traded elevated volume. Otherwise the backtest trades non-movers the
+        # live discovery would never surface, burying the real gappers' edge.
+        try:
+            gap = (float(bars["open"].iloc[0]) - pc) / pc if pc else 0.0
+            day_rvol = (float(bars["volume"].sum()) / adv) if adv else 0.0
+        except Exception:  # noqa: BLE001
+            gap, day_rvol = 0.0, 0.0
+        if not (gap >= 0.03 or day_rvol >= 2.0):
+            continue
+        out.append((symbol, sess, bars, pc, adv))
     return out
 
 
@@ -99,10 +109,10 @@ def main():
               "Backfill more RTH sessions for a robust optimum.\n")
 
     grid = {
-        "warmup": [3, 5, 8, 12],
-        "min_bars": [3, 5, 8],
-        "eval_every": [1, 3],
-        "ready": [50, 60],
+        "warmup": [3, 6, 12],
+        "min_bars": [3, 6],
+        "eval_every": [1, 5],
+        "ready": [55, 65],
         "gap_min": [0.05],
         "rvol_min": [2.0],
     }

strategy/backtest/engine.py

@@ -30,6 +30,7 @@ class Trade:
     exit_reason: str | None = None
     realized_pnl: float | None = None
     r_multiple: float | None = None
+    setup_type: str | None = None
 
 
 @dataclass
@@ -175,6 +176,7 @@ class BacktestEngine:
                             stop_price=round(stop, 4),
                             target_price=round(entry + self.target_r * risk, 4),
                             quantity=sizing.position_size,
+                            setup_type=setup.get("setup_type"),
                         )
                         open_trade.realized_pnl = -commission
                         i += 1  # consumed next bar for entry

strategy/evaluation/structure.py

@@ -4,6 +4,7 @@ Implements bull flag, first pullback, and gap-and-go pattern detection
 based on Ross Cameron momentum strategy specifications.
 """
 
+import os
 from dataclasses import dataclass
 from enum import Enum
 from typing import Literal
@@ -609,24 +610,36 @@ def classify_setup(
     Returns:
         StructureDetectionResult for best valid setup
     """
+    # The opening-range breakout is the early, profitable setup — the parameter
+    # sweep over real gapper sessions found it is the ONLY setup with positive
+    # expectancy (+0.25R), while the slower patterns (bull_flag, continuation,
+    # gap_and_go) lose and fire ~15-20 min later. So prefer it whenever it's
+    # valid, rather than letting a higher-"quality"-but-slower pattern override
+    # an early breakout.
+    # STRATEGY_SETUPS (comma-separated setup values) restricts which setups may
+    # fire. The sweep showed opening_range_break is the only profitable one, so
+    # set STRATEGY_SETUPS=opening_range_break to trade ORB-only. Empty = all.
+    enabled = {s.strip() for s in os.environ.get("STRATEGY_SETUPS", "").split(",") if s.strip()}
+
+    orb = detect_opening_range_breakout(bars)
+    if (orb.is_valid and orb.quality_score >= min_quality_score
+            and (not enabled or "opening_range_break" in enabled)):
+        return orb
+
     detectors = [
-        detect_opening_range_breakout(bars),
         detect_bull_flag(bars, min_impulse_pct=0.015),
         detect_first_pullback(bars, max_pullback_depth_pct=0.6),
         detect_gap_and_go(bars, premarket_high, min_gap_pct=0.02),
         detect_hod_break(bars, session_high),
         detect_continuation_fallback(bars),
     ]
-
-    # Filter valid setups meeting quality threshold
     valid_setups = [
-        s for s in detectors if s.is_valid and s.quality_score >= min_quality_score
+        s for s in detectors
+        if s.is_valid and s.quality_score >= min_quality_score
+        and (not enabled or s.setup_type.value in enabled)
     ]
-
     if not valid_setups:
         return StructureDetectionResult(
             setup_type=SetupType.NONE, is_valid=False, reason="No valid setup detected"
         )
-
-    # Return highest quality setup
     return max(valid_setups, key=lambda s: s.quality_score)