Add missing padStart when clamping to min value in DurationInput

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/DurationInput.vue

@@ -210,7 +210,7 @@ function onChange(event) {
   if (inputValue > max) {
     decoratedInputValue = max.toString().padStart(2, "0");
   } else if (inputValue < min) {
-    decoratedInputValue = min.toString();
+    decoratedInputValue = min.toString().padStart(2, "0");
   }
   const dsp = event.target.dataset.tunit;
   tUnits.value[dsp].val = decoratedInputValue;