Lay the Directory out as Apple's is, with the most subscribed in it (#124, #126, #128)

The Directory was one grid of every listed feed, 1,472 in production, under Podcasts and Blogs
tabs, a wall of about 30 category buttons and a sort menu, with a picked category's
subcategories appearing as a second row of buttons that looked like the first. It read as a
list to scroll, and the two rows were hard to tell apart.

It opens now on the ten most subscribed feeds, ranked, and the categories as tiles, each with
three of its shows' covers fanned in its corner on the tint its initials would get, so the
shows colour it and no theme's palette changes. A category has a page of its own: its most
subscribed, its subcategories with how many each holds, and its grid. See all is every feed,
as the grid was. Podcasts or Blogs holds across every page. Popular, the ten most subscribed,
had a place of its own in the feed list; it is the Directory's first section instead, and its
key, g p, is gone. /api/popular stays for scripts.

The search box finds a feed in the Directory by name (#126). It said "Search items…" there and
did nothing, since loadEntries returns early for a place that lists feeds.

A feed you do not subscribe to opens a page of its own (#128): its cover, category (a link to
that category's page), how many here subscribe, a subscribe button and its latest twenty items,
each with its title, linking to the post where it has one, its first lines, date and length.
Before, a click on it did nothing; only its + did. The items come from GET /api/directory/{id},
which answers only for a feed the Directory lists, so a guessed id reaches nothing private, and
carries no file or its address. The feed's own description would belong at the top, but the
database does not keep one.

Every tile and chart row takes the keyboard, as the feed list's rows do. Feed text made plain
keeps a space at a line break or a paragraph's end, which glued "2010)Recorded" together.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -9,7 +9,7 @@ behind iPodderX (2004-2008, Ray Slakinski & August Trometer).
 
 ## What it does
 
-- **The web UI.** It has a toolbar, and a feed list that opens with Directory, Popular and All
+- **The web UI.** It has a toolbar, and a feed list that opens with the Directory, Currently Listening and All
   Subscriptions. Items sit in a sortable table with a Files pane, and there is a player bar. It
   comes in Dark, Light and Classic themes, and works on a phone.
 - **Several people, one copy.** Each person has their own subscriptions and their own read, pinned