Bring the docs up to what changed: reload, corrections, flags, durability

An audit after 0.10.1 found the docs behind the code. architecture.md named no reload command
(#120) and still said a changed title was picked up, false since #96 until #141; it now says
what a scan writes again, and what the Directory page's endpoint sends (#142). cli.md lacked
add's --list and --category, and that add, rm and import tell a running daemon to read the
catalogue again. users.md did not mention Currently Listening or its search (#127).
configuration.md says that ipx no longer waits for the disk on each write, on SQLite or Postgres
(#135, #140), and what that can lose.

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

docs/users.md

@@ -87,6 +87,10 @@ Patreon or Supercast, which put the key in the path, and any feed inside an OPML
 itself. Those are someone's paid subscriptions, and listing them would let anyone here read what
 they pay for.
 
+**Currently Listening**, under the Directory, is every episode you started and have not finished,
+across all your feeds, with how much is left. A click picks one up where you left off. The search
+box looks through it, as it does a feed's items, and through the Directory by name.
+
 An admin can do the same from **Settings → Manage users…**: add someone (with a password, or none
 for someone the proxy signs in), tick or untick Admin, or remove an account. Removing one takes its
 subscriptions and read state with it; downloaded files stay. The only admin cannot be demoted or