Use native OS time picker on mobile for event times.

EventTimeInput24h switches to input type=time on touch devices while keeping dual selects on desktop for reliable 24h entry.

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

client/src/App.css

@@ -148,7 +148,8 @@ select.input-text {
   width: 100%;
 }
 
-.time-input-24h__select {
+.time-input-24h__select,
+.time-input-24h__native {
   flex: 1 1 0;
   min-width: 0;
   padding-left: 12px;
@@ -157,6 +158,11 @@ select.input-text {
   font-variant-numeric: tabular-nums;
 }
 
+input[type='time'].time-input-24h__native {
+  color-scheme: inherit;
+  cursor: pointer;
+}
+
 .time-input-24h__sep {
   flex-shrink: 0;
   font-size: 18px;