fix: failed test cases

src/core/commands/note/CreateNoteCommand.ts

@@ -130,6 +130,13 @@ export class CreateNoteCommand extends KGCommand {
     return this.regionId;
   }
 
+  /**
+   * Get the velocity that will be used for the created note.
+   */
+  public getVelocity(): number {
+    return this.velocity;
+  }
+
   /**
    * Factory method to create a note command from UI coordinates
    */

src/hooks/useNoteOperations.test.ts

@@ -173,9 +173,9 @@ describe('useNoteOperations', () => {
     });
 
     expect(coreState.executeCommand).toHaveBeenCalledTimes(1);
-    const createCommand = coreState.executeCommand.mock.calls[0][0] as CreateNoteCommand & { velocity: number };
+    const createCommand = coreState.executeCommand.mock.calls[0][0] as CreateNoteCommand;
     expect(createCommand).toBeInstanceOf(CreateNoteCommand);
-    expect(createCommand.velocity).toBe(91);
+    expect(createCommand.getVelocity()).toBe(91);
   });
 
   it('uses the most recently selected note velocity after deselecting a multi-selection', () => {
@@ -201,9 +201,9 @@ describe('useNoteOperations', () => {
     });
 
     expect(coreState.executeCommand).toHaveBeenCalledTimes(1);
-    const createCommand = coreState.executeCommand.mock.calls[0][0] as CreateNoteCommand & { velocity: number };
+    const createCommand = coreState.executeCommand.mock.calls[0][0] as CreateNoteCommand;
     expect(createCommand).toBeInstanceOf(CreateNoteCommand);
-    expect(createCommand.velocity).toBe(105);
+    expect(createCommand.getVelocity()).toBe(105);
   });
 
   it('falls back to velocity 127 when creating a manual note with no selection', () => {
@@ -220,9 +220,9 @@ describe('useNoteOperations', () => {
     });
 
     expect(coreState.executeCommand).toHaveBeenCalledTimes(1);
-    const createCommand = coreState.executeCommand.mock.calls[0][0] as CreateNoteCommand & { velocity: number };
+    const createCommand = coreState.executeCommand.mock.calls[0][0] as CreateNoteCommand;
     expect(createCommand).toBeInstanceOf(CreateNoteCommand);
-    expect(createCommand.velocity).toBe(127);
+    expect(createCommand.getVelocity()).toBe(127);
   });
 
   it('applies the cached velocity to every note in manual chord creation after deselecting', () => {

src/stores/projectStore.test.ts

@@ -59,6 +59,10 @@ const mockProject = {
   setShowGlobalTracks: vi.fn((value: boolean) => {
     mockShowGlobalTracks = value;
   }),
+  getPlayheadPosition: () => mockPlayheadPosition,
+  setPlayheadPosition: vi.fn((position: number) => {
+    mockPlayheadPosition = position;
+  }),
   getLoopingRange: () => [0, 0] as [number, number],
   getPianoRollZoom: () => 1,
 };
@@ -224,6 +228,7 @@ describe('projectStore piano roll state', () => {
     mockShowGlobalTracks = false;
     mockProject.setIsMetronomeEnabled.mockClear();
     mockProject.setShowGlobalTracks.mockClear();
+    mockProject.setPlayheadPosition.mockClear();
     configValues.set('audio.input_device_id', 'default');
   });