feat(cdc): add Re-sync sources button + auto-heal for Debezium connectors

- streaming_ops: add connector status discovery, manual resync endpoint
  (POST /api/pipeline/streaming/resync), connectors status endpoint, and a
  background connector_autoheal_loop that restarts FAILED tasks automatically
- main: wire connector_autoheal_loop into app lifespan
- api.ts: add resyncSources() helper
- ChangesView: add "Re-sync sources" header button with live status

api/main.py

@@ -47,6 +47,7 @@ from elasticsearch_api import router as elasticsearch_router
 from sql_console import router as sql_router
 from agent_ops import router as agent_ops_router, agent_dml_loop, etl_agent_loop, custodian_offload_loop
 from agent_activity import agent_activity_loop
+from streaming_ops import connector_autoheal_loop
 from cdc_consumer import router as cdc_router, cdc_consumer_loop
 from movements import router as movements_router
 from movements import MOVEMENT_BY_ID, trigger_and_watch
@@ -737,6 +738,7 @@ async def lifespan(app: FastAPI):
     etl_task = asyncio.create_task(etl_agent_loop())
     cust_task = asyncio.create_task(custodian_offload_loop())
     act_task = asyncio.create_task(agent_activity_loop())
+    heal_task = asyncio.create_task(connector_autoheal_loop())
     add_feed("infra-sentinel", "ATC Command Center API online", "info")
     yield
     task.cancel()
@@ -745,6 +747,7 @@ async def lifespan(app: FastAPI):
     etl_task.cancel()
     cust_task.cancel()
     act_task.cancel()
+    heal_task.cancel()
     if redis_client:
         await redis_client.close()