fix: align production defaults and close review parity gaps

Ship greenfield min_rr=2.0 and conf=0, read-only Structural S/R, indicator
cache invalidation, and UI/gate language that treats GTL as screening not exit.
Align strategy_rank missing-vol fallback live vs backtest, single-source
PRIMARY_TARGET_MIN_RR, expand prod parity tests, and drop dead FE clients.

app/routers/trades.py

@@ -76,13 +76,13 @@ async def get_trade_performance(
     _user=Depends(require_access),
     db: AsyncSession = Depends(get_db),
 ) -> APIEnvelope:
-    """Aggregate outcome statistics over evaluated trade setups.
+    """Aggregate setup-outcome statistics (gate barrier diagnostic).
 
-    Outcomes are written by the nightly outcome_evaluator job (win = target
-    hit first, loss = stop hit first, expired = neither within the window).
-    With qualified_only, the overall/direction/action breakdowns cover only
-    setups clearing the activation gate; the confidence breakdown always
-    covers all setups so the gate can be validated against it.
+    Outcomes come from the nightly outcome_evaluator: win = gate target first,
+    loss = stop first, expired = neither in the window. This is **not** the
+    production ATR-trail book; it checks setup grading plumbing only.
+    With qualified_only, overall/direction/action cover only gate-clearing
+    setups; the confidence breakdown always covers all setups.
     """
     config = await admin_service.get_activation_config(db) if qualified_only else None
     stats = await get_performance_stats(db, config=config)