Add S/R v2 research and validation harness

scripts/run_backtest_snapshot.py

@@ -46,6 +46,30 @@ def _parse_args() -> argparse.Namespace:
         help="Allow spawn multiprocessing for offline CLI runs, useful on Windows.",
     )
     parser.add_argument("--quiet", action="store_true", help="Hide progress output.")
+    parser.add_argument(
+        "--sr-variant",
+        choices=(
+            "production_control", "rr_aligned_control", "rewrite",
+            "soft_zones", "confirmed_rounds", "gate_v2",
+        ),
+        default=None,
+        help="Research-only S/R detector/gate arm.",
+    )
+    parser.add_argument(
+        "--entry-start",
+        default=None,
+        help="Include entries on/after YYYY-MM-DD.",
+    )
+    parser.add_argument(
+        "--entry-end",
+        default=None,
+        help="Include entries on/before YYYY-MM-DD.",
+    )
+    parser.add_argument(
+        "--sr-audit",
+        action="store_true",
+        help="Include candidate-level S/R audit rows for paired comparison.",
+    )
     return parser.parse_args()
 
 
@@ -138,6 +162,14 @@ async def _main() -> None:
     os.environ["BACKTEST_SNAPSHOT_OFFLINE"] = "1"
     if args.allow_spawn:
         os.environ["BACKTEST_ALLOW_SPAWN"] = "1"
+    if args.sr_variant:
+        os.environ["BACKTEST_SR_VARIANT"] = args.sr_variant
+    if args.entry_start:
+        os.environ["BACKTEST_ENTRY_START"] = args.entry_start
+    if args.entry_end:
+        os.environ["BACKTEST_ENTRY_END"] = args.entry_end
+    if args.sr_audit:
+        os.environ["BACKTEST_SR_AUDIT"] = "1"
 
     from app.config import settings
     from app.services.backtest_service import run_backtest