Design pass on the web UI: amber for new, EQ bars, keyboard feed list

Works through TODO.md from the 2026-09-11 review. Unread badges, dots and
download bars take the icon's amber; the playing item is marked by EQ bars
that move only while it plays. The feed list is usable from the keyboard,
focus rings show everywhere, and folders get a mosaic of their shows' art
with the triangle hung in the margin. Sentence-case labels, fewer bold
weights, tinted initials tiles, shorter header lines, "Kept" everywhere,
and the list gets the room the empty panes had. Reduced motion is honoured.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TAC7sLVqfKmY6rsTLXzNgk

CHANGELOG.md

@@ -19,8 +19,33 @@ The long form, with what was wrong before and how it was found, is in
 - Add feed has an "Allow items marked explicit" box, so a new feed's first scan no longer skips
   every explicit item.
 
+### Changed
+
+- Unread counts, unread dots and download progress are amber, the colour of the icon's EQ bars.
+  Blue is kept for the primary action and links, so a count no longer looks like a button.
+- What is playing is marked by small EQ bars, in its row and in the player. They move only while it
+  plays.
+- A folder in the sidebar shows its first four shows' art as a mosaic, and its shows sit under its
+  title. Only folders have a triangle, so every feed lines up with Directory and Popular above.
+- Feeds without art get initials in a colour of their own, instead of all the same grey.
+- The Flagged tab is called Kept, as the Keep button and Settings already said.
+- A feed's header is one short line; when it checks next is in its tooltip.
+- The item list takes more of the window, and the Files pane shows only when the item has files.
+- Column headings and tags are in sentence case, and fewer things are bold.
+- Unsubscribe is a round button beside the feed's other actions.
+- Export and Import in Settings say what they do.
+- The sign-in page shows the original icon large.
+- Nothing animates when your system asks for reduced motion.
+
 ### Fixed
 
+- The feed list works from the keyboard: Tab reaches every feed, Enter opens it, and Right and Left
+  open and close a folder. Every button shows where the focus is, including in the toolbar, which
+  used to clip the ring.
+- "1 items" reads "1 item".
+- A selected feed without art no longer loses its initials tile in Dark and Light.
+- The player shows the feed's initials when there is no art, not the episode's.
+
 - Turning on Allow explicit, or changing keywords or auto-download, brings back what those settings
   had skipped on the feed's next scan. Before, an item was judged once, when first seen, and a
   skipped one stayed skipped whatever you changed.