Document S/R findings and isolate legacy gate features

app/services/sr_service.py

@@ -400,25 +400,36 @@ def detect_sr_levels_legacy(
     closes: list[float],
     volumes: list[int],
     tolerance: float = DEFAULT_TOLERANCE,
+    *,
+    include_volume_profile: bool = True,
+    include_pivots: bool = True,
+    neutral_strength: bool = False,
 ) -> list[dict]:
-    """Exact research control for the deployed pre-rewrite detector."""
+    """Deployed detector plus source-isolation controls for local research.
+
+    The defaults remain the exact production control. Keyword-only switches
+    allow a research arm to remove one source or neutralize strength without
+    copying or subtly changing the legacy implementation.
+    """
     if not closes:
         return []
 
     candidates: list[tuple[float, str]] = []
-    try:
-        for price in _legacy_volume_profile_nodes(highs, lows, closes, volumes):
-            candidates.append((float(price), "volume_profile"))
-    except ValidationError:
-        pass
-    try:
-        pivots = compute_pivot_points(highs, lows, closes)
-        candidates.extend(
-            (float(price), "pivot_point")
-            for price in pivots.get("swing_highs", []) + pivots.get("swing_lows", [])
-        )
-    except ValidationError:
-        pass
+    if include_volume_profile:
+        try:
+            for price in _legacy_volume_profile_nodes(highs, lows, closes, volumes):
+                candidates.append((float(price), "volume_profile"))
+        except ValidationError:
+            pass
+    if include_pivots:
+        try:
+            pivots = compute_pivot_points(highs, lows, closes)
+            candidates.extend(
+                (float(price), "pivot_point")
+                for price in pivots.get("swing_highs", []) + pivots.get("swing_lows", [])
+            )
+        except ValidationError:
+            pass
     if not candidates:
         return []
 
@@ -469,6 +480,9 @@ def detect_sr_levels_legacy(
         )
 
     _tag_levels(merged, closes[-1])
+    if neutral_strength:
+        for level in merged:
+            level["strength"] = 50
     merged.sort(key=lambda row: row["strength"], reverse=True)
     return merged