Popular button in the sidebar; the popular list counts everyone

- A Popular button beside + Feed opens the popular list directly; the
  Add feed dialog keeps it too.
- The list counts every subscriber, you included. Your own feeds stay on
  it, marked Subscribed, and clicking one opens it. Private feeds and
  feeds inside an OPML are still never listed, for anyone.
- GET /api/popular rows carry `subscribed`.

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

docs/architecture.md

@@ -110,7 +110,7 @@ else a `401`.
 | `POST /api/enclosures/{id}/download`, `DELETE /api/enclosures/{id}` | `?force=true` overrides the shared-file warning |
 | `POST /api/fetch` | |
 | `GET /api/opml`, `POST /api/opml` | export your subscriptions; subscribe to every feed in an OPML |
-| `GET /api/popular`, `POST /api/popular/{id}` | what others here subscribe to (id, title, art, count; never a URL, never a private feed); subscribe by id |
+| `GET /api/popular`, `POST /api/popular/{id}` | what everyone here subscribes to, you included (id, title, art, count, whether it is yours; never a URL, never a private feed); subscribe by id |
 | `GET /api/settings`, `PATCH /api/settings` | admin-only to write |
 | `GET /api/users`, `POST /api/users`, `PATCH /api/users/{id}`, `DELETE /api/users/{id}` | admin-only; the only admin cannot be demoted or removed |
 | `GET /api/events` | SSE, the same broadcast the socket carries |

docs/users.md

@@ -70,8 +70,9 @@ list with their own read state. Unsubscribing removes it from their list alone;
 subscriber leaves does the feed stop being scanned, and even then its files and history stay, so
 re-subscribing does not pull the back catalogue again.
 
-**Add feed** also lists what other people on this server subscribe to, most subscribers first, as
-a place to start. It shows a title, artwork and a count, never a URL or who reads it. Feeds from an
+**Popular**, at the top of the feed list and in the Add feed dialog, lists what everyone on this
+server subscribes to, you included, most subscribers first. Your own feeds are marked Subscribed.
+It shows a title, artwork and a count, never a URL or who reads it. Feeds from an
 OPML subscription are left out, since they come with the OPML. So is anything that looks private: a
 login configured for the feed, credentials in its URL, or a key such as `auth=` or `token=` in the
 query. Those are someone's paid subscriptions, and listing them would let anyone here read what they