feat(dashcam): show converting badge and date on mobile video rows

Co-authored-by: Copilot <[email protected]>

static/yaris.css

@@ -272,6 +272,8 @@ body {
 /* Desktop: truncate long filenames */
 @media (min-width: 576px) {
     .dash-thumb-name { display: none; }
+    .dash-thumb-meta { display: none; }
+    .dash-thumb-converting { display: none; }
     .dash-col-file { max-width: 14rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
     .dash-thumb-td { width: 9rem; padding: 0.25rem; }
 }
@@ -318,6 +320,10 @@ body {
     /* Filename under thumbnail */
     .dash-thumb-name { display: block !important; font-size: .7rem; margin-top: .2rem; }
 
+    /* Date + converting badge under thumbnail (mobile only) */
+    .dash-thumb-meta { display: block; font-size: .65rem; line-height: 1.2; }
+    .dash-thumb-converting { display: inline-block; font-size: .65rem; padding: .1rem .3rem; }
+
     /* Icon-only buttons */
     .btn-icon-mobile .btn-label { display: none; }
 }