feat: scaffold Tauri v2 + Svelte 5 project with base layout and utilities

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/lib/utils/time.test.ts

@@ -0,0 +1,42 @@
+import { describe, it, expect } from 'vitest';
+import { formatTime, parseTime } from '$lib/utils/time';
+
+describe('formatTime', () => {
+  it('formats zero seconds', () => {
+    expect(formatTime(0)).toBe('00:00.000');
+  });
+
+  it('formats seconds with milliseconds', () => {
+    expect(formatTime(83.45)).toBe('01:23.450');
+  });
+
+  it('formats hours', () => {
+    expect(formatTime(3661.5)).toBe('1:01:01.500');
+  });
+
+  it('formats exact minutes', () => {
+    expect(formatTime(120)).toBe('02:00.000');
+  });
+
+  it('handles large values', () => {
+    expect(formatTime(7384.123)).toBe('2:03:04.123');
+  });
+});
+
+describe('parseTime', () => {
+  it('parses mm:ss.mmm format', () => {
+    expect(parseTime('01:23.450')).toBeCloseTo(83.45);
+  });
+
+  it('parses h:mm:ss.mmm format', () => {
+    expect(parseTime('1:01:01.500')).toBeCloseTo(3661.5);
+  });
+
+  it('returns null for invalid input', () => {
+    expect(parseTime('not a time')).toBeNull();
+  });
+
+  it('parses mm:ss without milliseconds', () => {
+    expect(parseTime('02:00')).toBeCloseTo(120);
+  });
+});