Popular is a top 10; a Directory lists every listed feed A to Z

- GET /api/popular returns the ten most subscribed feeds. The new GET
  /api/directory returns every feed that may be listed, sorted by name,
  from the same list: everyone counted, you included, never a URL, never
  a private feed or a feed inside an OPML. POST /api/popular/{id} still
  subscribes to anything on it.
- A Directory button sits beside Popular; both open the same list
  screen. The sidebar toolbar wraps rather than squeezing four buttons.
- Tests: the directory is A to Z, Popular is its top ten, Paid Show is
  in neither, and subscribing works from the directory.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016HdTEWQNrzyFULijigkmMn

CHANGELOG.md

@@ -14,9 +14,12 @@ The long form, with what was wrong before and how it was found, is in
 
 - A Popular button at the top of the feed list opens the popular list without going through
   Add feed.
+- A Directory button lists every feed anyone on this server subscribes to, A to Z
+  (`GET /api/directory`), with the same rules as Popular.
 
 ### Changed
 
+- Popular shows the top 10, not 20.
 - The popular list counts everyone, you included. Your own feeds stay on it, marked Subscribed,
   and clicking one opens it.