fix(awooop): persist signal metadata and auto-repair prestate

apps/api/src/services/post_execution_verifier.py

@@ -208,10 +208,28 @@ class PostExecutionVerifier:
                 timeout=TOOL_TIMEOUT_SEC,
             )
             snapshot.pre_execution_state = state
+            try:
+                await snapshot.update_pre_execution(state)
+            except Exception as exc:
+                logger.warning(
+                    "verifier_pre_state_persist_failed",
+                    incident_id=incident_id,
+                    snapshot_id=snapshot.snapshot_id,
+                    error=str(exc),
+                )
             logger.debug("verifier_pre_state_captured", incident_id=incident_id)
         except Exception:
             logger.warning("verifier_pre_state_failed", incident_id=incident_id)
             snapshot.pre_execution_state = {}
+            try:
+                await snapshot.update_pre_execution({})
+            except Exception as exc:
+                logger.warning(
+                    "verifier_empty_pre_state_persist_failed",
+                    incident_id=incident_id,
+                    snapshot_id=snapshot.snapshot_id,
+                    error=str(exc),
+                )
 
     async def _collect_post_state(self, incident: "Incident") -> dict[str, Any]:
         """