Add per-kind stats, GIF hover playback, and static gif previews

docs/media.md

@@ -159,9 +159,10 @@ that deletion is irreversible. The delete button is disabled for a 5 second coun
   for a fresh signed URL, so expired CDN links still play. Embed `videoUrl`s (gifv/Tenor mp4s) are
   stored as `play_url` and used directly. The full link is a separate button that opens the
   original page with the warning. Length comes from Discord's attachment duration and, for
-  downloads, an ffprobe probe. The status row reads
-  `(Images/Videos) | Downloaded A/B | Cached C/B (excl Downl) | Loaded L/B`, where B is the total
-  for the active filters. A scrape strip shows live progress with Stop.
+  downloads, an ffprobe probe. GIF tiles carry a translucent **GIF** label top-left; the cached
+  preview is a static frame and the animated GIF plays while hovering. The status row reads
+  `(Images/Videos) | Downloaded I/V | Cached I/V | Loaded I/V` — image counts include GIFs, and
+  each slot is the count for the active filters. A scrape strip shows live progress with Stop.
   **New scrape…** (rightmost) opens a popup with Server and Group chat trees (servers expand to
   channels; each row has Links and Download). Every scrape button asks for confirmation; the
   dialog takes optional From/To dates and a **Check Message Count** button (Discord search total,