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

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

src/lib/utils/time.ts

@@ -0,0 +1,36 @@
+export function formatTime(totalSeconds: number): string {
+  const hours = Math.floor(totalSeconds / 3600);
+  const minutes = Math.floor((totalSeconds % 3600) / 60);
+  const seconds = Math.floor(totalSeconds % 60);
+  const millis = Math.round((totalSeconds % 1) * 1000);
+
+  const mm = String(minutes).padStart(2, '0');
+  const ss = String(seconds).padStart(2, '0');
+  const ms = String(millis).padStart(3, '0');
+
+  if (hours > 0) {
+    return `${hours}:${mm}:${ss}.${ms}`;
+  }
+  return `${mm}:${ss}.${ms}`;
+}
+
+export function parseTime(str: string): number | null {
+  const hmsMatch = str.match(/^(\d+):(\d{2}):(\d{2})(?:\.(\d{1,3}))?$/);
+  if (hmsMatch) {
+    const h = parseInt(hmsMatch[1], 10);
+    const m = parseInt(hmsMatch[2], 10);
+    const s = parseInt(hmsMatch[3], 10);
+    const ms = hmsMatch[4] ? parseInt(hmsMatch[4].padEnd(3, '0'), 10) : 0;
+    return h * 3600 + m * 60 + s + ms / 1000;
+  }
+
+  const msMatch = str.match(/^(\d{2}):(\d{2})(?:\.(\d{1,3}))?$/);
+  if (msMatch) {
+    const m = parseInt(msMatch[1], 10);
+    const s = parseInt(msMatch[2], 10);
+    const ms = msMatch[3] ? parseInt(msMatch[3].padEnd(3, '0'), 10) : 0;
+    return m * 60 + s + ms / 1000;
+  }
+
+  return null;
+}