maven: fix test mocks for CalendarEvents interface (verification)

- Add CalendarEvents method to recordingAPI in auth_test.go
- Add CalendarEvents method to fakeCore in handlers_test.go

Co-Authored-By: opencode <opencode@anthropic.com>

internal/store/reminders.go

@@ -12,13 +12,13 @@ import (
 
 // Reminder — user-stated future intent. fires once or recurring (if cron set).
 type Reminder struct {
-	ID        int64
-	CreatedTs time.Time
-	FireTs    time.Time
-	NextFireTs time.Time   // computed next fire (for recurring) or same as FireTs
-	Payload   string       // raw json
-	Status    string       // pending | fired | cancelled
-	Cron      string       // cron expression, empty for one-shot
+	ID         int64
+	CreatedTs  time.Time
+	FireTs     time.Time
+	NextFireTs time.Time // computed next fire (for recurring) or same as FireTs
+	Payload    string    // raw json
+	Status     string    // pending | fired | cancelled
+	Cron       string    // cron expression, empty for one-shot
 
 	// Collapsed — set only on a synthetic digest reminder (ID=0): the original
 	// due reminders it stands in for. Not persisted. The dispatcher completes
@@ -144,4 +144,4 @@ func (s *Store) RescheduleReminder(ctx context.Context, id int64, now time.Time)
 	}
 	_, err = s.db.ExecContext(ctx, "UPDATE reminders SET next_fire_ts = ? WHERE id = ?", next.UnixMilli(), id)
 	return err
-}
+}