feat(manifold): audit matching quality with ManifoldMatchResult and manifold_match_audit table

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

bot/main.py

@@ -141,6 +141,12 @@ async def run_trading_loop(
                     # Block this family for the rest of the cycle (Phase 2)
                     occupied_families.add(signal.family_key)
                     cycle_trades += 1
+                    # Mark manifold audit record as used in this trade
+                    if signal.mfld_audit_id:
+                        try:
+                            await db.mark_manifold_audit_used(signal.mfld_audit_id)
+                        except Exception as exc:
+                            log.warning("Failed to mark manifold audit used: %s", exc)
 
             # 8. [CYCLE SUMMARY] — one block per cycle, stable format for grep/compare
             stats = strategy.get_cycle_stats()
@@ -375,7 +381,7 @@ async def main() -> None:
     external = ExternalDataClient()
     news = NewsClient()
     manifold = ManifoldClient()
-    strategy = BayesianStrategy(news=news, manifold=manifold)
+    strategy = BayesianStrategy(news=news, manifold=manifold, db=db)
     risk = RiskManager(max_position_pct=0.05, max_exposure_pct=0.30)
     executor = PaperExecutor(db=db, bankroll=PAPER_BANKROLL) if PAPER_MODE else None
     metrics = MetricsTracker(db=db)