Update shared submodule + emit calendar entry events for federation

- Emit calendar_entry.created events when entries are added
- Updated shared with federation handlers, delivery, anchoring

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

bp/calendar_entries/services/entries.py

@@ -94,6 +94,23 @@ async def add_entry(
     )
     sess.add(entry)
     await sess.flush()
+
+    # Emit federation event
+    if entry.user_id:
+        from shared.events import emit_event
+        await emit_event(
+            sess,
+            event_type="calendar_entry.created",
+            aggregate_type="CalendarEntry",
+            aggregate_id=entry.id,
+            payload={
+                "user_id": entry.user_id,
+                "title": entry.name or "",
+                "start_time": entry.start_at.isoformat() if entry.start_at else "",
+                "end_time": entry.end_at.isoformat() if entry.end_at else "",
+            },
+        )
+
     return entry