The Directory comes from the directory service (#205)

ipx asks ipx-directory on its people's behalf, with the token an admin set
in the new Admin, Directory tab, so the page never talks to it and never
sees the token or a feed's address. /api/directory, /api/popular and a
feed's Directory page answer from it; subscribing takes the address from
the directory and goes through Add feed's steps. With no directory set
up, the Directory says so. The local directory code is gone; its privacy
checks are the snapshot builder's now, and their tests moved with them.

With sharing on, ipx sends its snapshot after every scan, whenever the
config changes (set_cfg) and every half hour: each public feed and how
many here subscribe, never an OPML or Patreon creator itself or anything
private. A feed can be marked private in its settings, for a paid feed
whose address does not give it away; anyone subscribed may mark it, only
an admin unmark it. The admin's category for a feed that names none goes
with it, which the directory uses only while the feed names none, so the
category an admin gives a blog still reaches the Directory.

The directory lists only feeds it has read as a feed: the first snapshot
after a start went before the first scan, when an OPML was not yet known
to be one, and the directory listed the OPML. It now fetches what a
snapshot brings in at once instead of within the minute.

The browser suite runs its own ipx-directory on SQLite; the Directory's
tests match feeds by title, since the directory names them by address.

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

web/admin.html

@@ -20,12 +20,14 @@
   <nav class="tabs" id="atabs">
     <a href="#server" data-t="server">Server</a>
     <a href="#accounts" data-t="accounts">Accounts</a>
+    <a href="#directory" data-t="directory">Directory</a>
     <a href="#log" data-t="log">Log</a>
   </nav>
 </header>
 <main class="wrap plain" id="admin">
   <section id="server" hidden></section>
   <section id="accounts" hidden></section>
+  <section id="directory" hidden></section>
   <section id="log" hidden></section>
 </main>
 <div id="toasts"></div>