A terminal reader, ipx; the server is ipxd (#437)

ipx-tui (crates/tui) is iPX's reader in ratatui: your feeds, a feed's
items, an item's text as plain text, read and flagged as on the page,
through the API with an API token. It installs as `ipx`, so the daemon's
binary is now `ipxd`: the Dockerfile, release script, tests and every
doc and message that names its commands follow.

Naming the binary ipxd alone renamed its crate, and with it every log
target (ipx::scan became ipxd::scan): the default filters are ipx=info,
so nearly every line would have been dropped and the dashboard's queries
on the targets gone blank. The daemon's code is now a library still
called ipx, under a five-line ipxd main.rs, and the targets are as they
were.

ratatui is taken without its default features: 32 new packages in place
of 78.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RqkrVDqdiQEMWAkNGQ2tYA

docs/users.md

@@ -56,13 +56,13 @@ A database with no accounts creates **admin** on the next daemon start, with the
 readable by ipx's user alone. The log says where the password is, never what it is. Change it:
 
 ```sh
-echo -n 'a good password' | ipx user passwd admin
+echo -n 'a good password' | ipxd user passwd admin
 ```
 
 ## Adding someone
 
 ```sh
-echo -n 'their password' | ipx user add sam
+echo -n 'their password' | ipxd user add sam
 ```
 
 They sign in at `/login` and start with **no feeds**: subscriptions are per person. Adding a feed
@@ -107,5 +107,5 @@ and who else is an admin, and read the log, which names everyone's feeds and sig
 gets the Settings and Log buttons hidden and a `403` if they ask anyway.
 
 ```sh
-ipx user list      # the admin column says who
+ipxd user list      # the admin column says who
 ```