Add authenticated global economic calendar with Jin10 fallback

Collect macroeconomic releases, events and holidays through the official browser SDK with resumable history from 2025. Preserve evidence, revisions and observation times, and merge verified series with official fields taking priority.

Add category filters, field provenance, coverage and connection status. Verify calendar persistence and deployment recovery in isolated acceptance checks.

backend/src/alphapulse/api/crawler.py

@@ -119,7 +119,6 @@ async def calendar_sources(session: AsyncSession) -> list[CalendarSourceOut]:
     now = datetime.now(UTC)
     raw = await redis.get(f"{KEY_PREFIX}calendar:status")
     heartbeat = json.loads(raw) if raw else None
-    alive = bool(heartbeat and now - datetime.fromisoformat(heartbeat["at"]) < timedelta(seconds=30))
     pending = EconomicRelease.first_received_at.is_(None) & (EconomicRelease.schedule_status == "scheduled")
     published = EconomicRelease.first_received_at.is_not(None)
     rows = (await session.execute(select(
@@ -138,18 +137,26 @@ async def calendar_sources(session: AsyncSession) -> list[CalendarSourceOut]:
         EconomicRelease.scheduled_at >= now - timedelta(days=45),
     ).order_by(EconomicRelease.last_checked_at.desc())):
         result_errors.setdefault(source, error)
-    codes = {family.source for family in FAMILIES.values()}
+    codes = {family.source for family in FAMILIES.values()} | {"jin10"}
+    raw_jin10 = await redis.get(f"{KEY_PREFIX}calendar:jin10")
+    jin10_heartbeat = json.loads(raw_jin10) if raw_jin10 else None
     sources = list(await session.scalars(select(Source).where(Source.code.in_(codes)).order_by(Source.code)))
     output = []
     for source in sources:
-        checks = [s for s in heartbeat["sources"].values() if s["source"] == source.code] if heartbeat else []
+        current_heartbeat = jin10_heartbeat if source.code == "jin10" else heartbeat
+        source_alive = bool(current_heartbeat and now - datetime.fromisoformat(current_heartbeat["at"]) < timedelta(seconds=30))
+        if source.code == "jin10":
+            checks = [{"source": "jin10", "checked_at": jin10_heartbeat["at"],
+                       "error": jin10_heartbeat.get("error") or (None if jin10_heartbeat.get("state") in ("ready", "syncing") else "金十同步尚未就绪")}] if jin10_heartbeat else []
+        else:
+            checks = [s for s in heartbeat["sources"].values() if s["source"] == source.code] if heartbeat else []
         errors = [s["error"] for s in checks if s["error"]]
         if source.code in result_errors:
             errors.append(result_errors[source.code])
         data = stats.get(source.code, {})
         output.append(CalendarSourceOut(
-            code=source.code, name=source.name, region_code=REGIONS[source.code], worker_alive=alive,
-            heartbeat_at=heartbeat["at"] if heartbeat else None,
+            code=source.code, name=source.name, region_code=REGIONS[source.code], worker_alive=source_alive,
+            heartbeat_at=current_heartbeat["at"] if current_heartbeat else None,
             schedule_checked_at=max((s["checked_at"] for s in checks), default=None),
             **{key: data.get(key) for key in ("schedule_success_at", "latest_result_at", "next_event_at", "history_start", "history_end")},
             overdue_count=data.get("overdue_count", 0), errors=list(dict.fromkeys(errors)),