feat: implemented confirmation mechanism for tool invokation

src/agent/tools/RemoveNotesTool.test.ts

@@ -0,0 +1,56 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { RemoveNotesTool } from './RemoveNotesTool';
+import { KGCore } from '../../core/KGCore';
+import { KGProject } from '../../core/KGProject';
+import { KGMidiTrack } from '../../core/track/KGMidiTrack';
+import { KGMidiRegion } from '../../core/region/KGMidiRegion';
+import { KGMidiNote } from '../../core/midi/KGMidiNote';
+
+const storeState = {
+  activeRegionId: null as string | null,
+};
+
+vi.mock('../../stores/projectStore', () => ({
+  useProjectStore: {
+    getState: () => storeState,
+  },
+}));
+
+describe('RemoveNotesTool', () => {
+  beforeEach(() => {
+    storeState.activeRegionId = null;
+    vi.restoreAllMocks();
+  });
+
+  it('builds confirmation and result summaries for note removal', () => {
+    const track = new KGMidiTrack('Lead', 1);
+    const region = new KGMidiRegion('region-1', track.getId().toString(), track.getTrackIndex(), 'Verse Melody', 0, 32);
+    region.setNotes([
+      new KGMidiNote('note-1', 16, 20, 60, 100),
+      new KGMidiNote('note-2', 20, 28, 64, 100),
+    ]);
+    track.setRegions([region]);
+    const project = new KGProject('summary-project', 8, 0, 120, { numerator: 4, denominator: 4 }, 'C major');
+    project.setTracks([track]);
+    storeState.activeRegionId = region.getId();
+
+    vi.spyOn(KGCore, 'instance').mockReturnValue({
+      getCurrentProject: () => project,
+      getSelectedItems: () => [],
+    } as unknown as KGCore);
+
+    const tool = new RemoveNotesTool();
+    const args = {
+      start: 16,
+      end: 24,
+    };
+
+    expect(tool.isReadOnlyTool()).toBe(false);
+    expect(tool.buildConfirmationContent(args)).toBe(
+      'Allow removing 2 notes from beats 16-24, in region **Verse Melody** on track **Lead**, spanning bars 5 to 7?'
+    );
+    expect(tool.buildToolResultDisplayContent(args, { success: true, result: 'raw result' })).toBe(
+      'Successfully removed 2 notes from beats 16-24, in region **Verse Melody** on track **Lead**, spanning bars 5 to 7.'
+    );
+  });
+});