feat: check source links during scheduled fetches

apps/api/app/community_scheduler.py

@@ -14,6 +14,7 @@ from .config import settings
 from .database import SessionLocal
 from .logging_config import configure_logging
 from .models import CommunityImportRun, DataSource
+from .source_lifecycle import classify_source_failure, record_scheduled_source_check
 
 logger = logging.getLogger("rf4.community_scheduler")
 MAX_BACKOFF_SECONDS = 24 * 60 * 60
@@ -102,11 +103,27 @@ def run_source(source_system: str, *, now: datetime | None = None) -> bool:
             html = fetch_html(url)
             records = parser(html, source_url=url) if source_system in {"rf4map", "rf4posts-spot"} else parser(html)
             created, updated = stage_observations(session, [asdict(item) for item in records])
+            record_scheduled_source_check(
+                session, source_system=source_system, source_url=url,
+                status="available", checked_at=current,
+            )
             run.status, run.rows_seen, run.rows_created, run.rows_updated = "success", len(records), created, updated
         except Exception as exc:
             session.rollback()
+            source_status = classify_source_failure(exc)
+            checked = datetime.now(timezone.utc)
+            affected = record_scheduled_source_check(
+                session,
+                source_system=source_system,
+                source_url=url,
+                status=source_status,
+                checked_at=checked,
+            )
             run.status, run.error_summary = "failed", f"{type(exc).__name__}: {str(exc)[:500]}"
-            logger.exception("community import failed", extra={"event":"community_import_failed", "source_system":source_system})
+            logger.exception("community import failed", extra={
+                "event":"community_import_failed", "source_system":source_system,
+                "source_check_status": source_status, "affected_observations": affected,
+            })
         run.finished_at = datetime.now(timezone.utc); session.commit()
         return True