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/loop/feedback_test.go

@@ -97,10 +97,10 @@ func TestFeedbackKeyMatchesRuleName(t *testing.T) {
 func TestParseCooldownFactRoundTrip(t *testing.T) {
 	d := 45 * time.Minute
 	f := store.Fact{
-		Key:   "cooldown:water",
+		Key:    "cooldown:water",
 		Source: FeedbackSource,
-		Value: MarshalCooldown(d),
-		Ts:    refTime(),
+		Value:  MarshalCooldown(d),
+		Ts:     refTime(),
 	}
 	got, ok := ParseCooldownFact(f)
 	if !ok {
@@ -149,4 +149,4 @@ func repeat(v string, n int) []string {
 		out[i] = v
 	}
 	return out
-}
+}