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/ipc/server.go

@@ -280,9 +280,9 @@ type Server struct {
 	api  CoreAPI
 	path string
 
-	ln    net.Listener
-	wg    sync.WaitGroup
-	done  chan struct{}
+	ln   net.Listener
+	wg   sync.WaitGroup
+	done chan struct{}
 
 	// Check — optional authorization hook. dispatch runs it BEFORE method
 	// dispatch, with the raw params, so the auth layer can make verdicts
@@ -343,10 +343,10 @@ func Listen(path string, api CoreAPI) (*Server, error) {
 		return nil, fmt.Errorf("ipc: chmod socket: %w", err)
 	}
 	return &Server{
-		api:   api,
-		path:  path,
-		ln:    ln,
-		done:  make(chan struct{}),
+		api:  api,
+		path: path,
+		ln:   ln,
+		done: make(chan struct{}),
 	}, nil
 }
 
@@ -754,4 +754,4 @@ func peerCaller(c net.Conn) (Caller, bool) {
 		return Caller{}, false
 	}
 	return Caller{Uid: int32(cred.Uid), Pid: int32(cred.Pid)}, true
-}
+}