Add photo counts, EXIF details, video duration badges, slideshow launcher UI

- Album cards show recursive photo count (bubbles up through sub-albums).
- Lightbox info panel shows camera, aperture, shutter speed, and ISO;
  update.rb now extracts and stores these EXIF fields.
- Video thumbnail cards show a duration badge (e.g. "1:23").
- Slideshow launcher redesigned: button on its own line, with Shuffle /
  Full screen / Interval options on a second line, all inside a rounded
  border to make the grouping clear.
- Fixed album-actions alignment so Interval sits level with the checkboxes.

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

1 files changed, 20 insertions, 6 deletions

diff --git a/scripts/update.rb b/scripts/update.rb
index 9052341..0b052ba 100644
--- a/scripts/update.rb
+++ b/scripts/update.rb
@@ -80,15 +80,29 @@ end
 # ── Metadata enrichment ────────────────────────────────────────────────────────
 
 def enrich_image(full, name, meta)
-  # EXIF date (skip if already recorded)
-  if meta['taken_at'].nil?
+  needs_exif = meta['taken_at'].nil? || meta['camera'].nil? ||
+               meta['aperture'].nil? || meta['shutter'].nil? || meta['iso'].nil?
+  if needs_exif
     begin
       exif = MiniExiftool.new(full, numerical: false)
-      raw  = exif.date_time_original || exif.create_date || exif.date_time
-      if raw
-        meta['taken_at'] = raw.respond_to?(:strftime) ? raw.strftime('%Y-%m-%dT%H:%M:%S') : raw.to_s
-        puts "  #{name}: taken_at = #{meta['taken_at']}"
+
+      if meta['taken_at'].nil?
+        raw = exif.date_time_original || exif.create_date || exif.date_time
+        if raw
+          meta['taken_at'] = raw.respond_to?(:strftime) ? raw.strftime('%Y-%m-%dT%H:%M:%S') : raw.to_s
+          puts "  #{name}: taken_at = #{meta['taken_at']}"
+        end
+      end
+
+      if meta['camera'].nil?
+        make  = exif.make.to_s.strip
+        model = exif.model.to_s.strip
+        cam   = model.downcase.start_with?(make.downcase) ? model : [make, model].reject(&:empty?).join(' ')
+        meta['camera'] = cam.empty? ? nil : cam
       end
+      meta['aperture'] ||= exif.f_number     ? "f/#{exif.f_number}"  : nil
+      meta['shutter']  ||= exif.exposure_time&.to_s
+      meta['iso']      ||= (exif.iso_speed_ratings || exif.iso)&.to_i
     rescue StandardError => e
       warn "  #{name}: EXIF error — #{e.message}"
     end