fix: outbox consumer_inbox idempotency logic + tenant_plugin_activation per-tenant check

app/core/outbox.py

@@ -179,6 +179,18 @@ async def process_outbox_batch(
             payload_dict.setdefault("_event_name", event_name)
             payload_dict.setdefault("_event_timestamp", datetime.now(timezone.utc).isoformat())
             
+            # Idempotency check: has this event already been processed? (P1.5 fix)
+            already_processed = await db.execute(
+                text("SELECT 1 FROM consumer_inbox WHERE event_id = :eid AND status = 'processed' LIMIT 1"),
+                {"eid": str(event_id)},
+            )
+            if already_processed.first():
+                # Event was already processed by all consumers — mark as published
+                await db.execute(_MARK_PUBLISHED_SQL, {"id": str(event_id)})
+                published_count += 1
+                logger.debug("Outbox event %s already processed, marking as published", event_id)
+                continue
+            
             results = await event_bus.publish_with_results(event_name, payload_dict)
             
             # Check if any handlers were registered at all
@@ -190,13 +202,17 @@ async def process_outbox_batch(
             
             if handler_count == 0:
                 # No handlers registered — mark as 'no_handlers' not 'published'
-                # This prevents events from silently disappearing
                 await db.execute(
                     text("UPDATE event_outbox SET status = 'no_handlers', published_at = now() WHERE id = :id"),
                     {"id": str(event_id)},
                 )
                 logger.warning("Outbox event %s (%s) had no handlers registered", event_id, event_name)
             else:
+                # Record in consumer_inbox for idempotency (P1.5 fix)
+                await db.execute(
+                    text("INSERT INTO consumer_inbox (event_id, consumer_name, status, processed_at) VALUES (:eid, :name, 'processed', now()) ON CONFLICT DO NOTHING"),
+                    {"eid": str(event_id), "name": event_name},
+                )
                 await db.execute(_MARK_PUBLISHED_SQL, {"id": str(event_id)})
             published_count += 1
         except Exception as exc: