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

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

bot/executor/paper.py

@@ -57,6 +57,16 @@ class Trade:
     feat_news_lo:    float = 0.0
     feat_mfld_lo:    float = 0.0
     feat_btc_dom_lo: float = 0.0
+    # ── Manifold match audit ──────────────────────────────────────────────────
+    mfld_market_id:   Optional[str]   = None
+    mfld_market_title: Optional[str]  = None
+    mfld_market_url:  Optional[str]   = None
+    mfld_prob_raw:    Optional[float] = None
+    mfld_prob_final:  Optional[float] = None
+    mfld_inverted:    bool            = False
+    mfld_match_score: Optional[float] = None
+    mfld_match_reason: Optional[str]  = None
+    mfld_match_status: Optional[str]  = None
 
     def __str__(self) -> str:
         return (
@@ -176,6 +186,16 @@ class PaperExecutor:
             feat_news_lo=order.feat_news_lo,
             feat_mfld_lo=order.feat_mfld_lo,
             feat_btc_dom_lo=order.feat_btc_dom_lo,
+            # Manifold audit
+            mfld_market_id=order.mfld_market_id,
+            mfld_market_title=order.mfld_market_title,
+            mfld_market_url=order.mfld_market_url,
+            mfld_prob_raw=order.mfld_prob_raw,
+            mfld_prob_final=order.mfld_prob_final,
+            mfld_inverted=order.mfld_inverted,
+            mfld_match_score=order.mfld_match_score,
+            mfld_match_reason=order.mfld_match_reason,
+            mfld_match_status=order.mfld_match_status,
         )
 
         # Update paper portfolio