feat(notifications): emit at maintenance/turn/sync/reauth events

packages/backend/tests/unit/git-connection-status.test.ts

@@ -16,6 +16,13 @@ const seedConnection = async (
       email: '[email protected]',
       name: 'A',
     });
+    // Disable email so a reauth emit does not schedule the best-effort node
+    // email action, whose async logging would race test teardown.
+    await ctx.db.insert('notificationPreferences', {
+      userId,
+      emailEnabled: false,
+      updatedAt: now,
+    });
     return await ctx.db.insert('gitConnections', {
       userId,
       provider: 'github',