Review everything shipped this weekend, and fix what the reviewers caught

Claude-Session: https://claude.ai/code/session_01Ms2FbjQy31TVf3CEvQhGM8

config/dot/quickshell/scripts/panama-lock

@@ -92,7 +92,11 @@ resolve_wallpaper_path() {
     # A video wallpaper cannot play on the lock screen; VideoWallpaper.qml
     # grabs a still frame when one is selected, and that frame stands in.
     # A video with no cached frame falls through to the shipped image.
-    if [[ "$candidate" =~ \.(mp4|mkv|webm)$ ]]; then
+    #
+    # Lowercased first, because panama-video-wallpaper scans with -iname: a
+    # HOLIDAY.MP4 it happily offers would otherwise be handed to the lock screen
+    # as an image and render as nothing at all.
+    if [[ "${candidate,,}" =~ \.(mp4|mkv|webm)$ ]]; then
         local frame="${XDG_STATE_HOME:-$HOME/.local/state}/panama/video-wallpaper-frame.png"
         if valid_path "$frame"; then
             resolved_wallpaper="$frame"