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

grafana/alerts.py

@@ -43,7 +43,7 @@ rules = [
          "Prometheus cannot reach the directory's /metrics.", no_data="Alerting"),
     rule("web-down", "ipx-web is down", 'up{job="ipx-web"}', "lt", 1, "5m",
          "Prometheus cannot reach Caddy's /metrics: the page is likely down too.", no_data="Alerting"),
-    # The worker: the daemon answers `ipx status` while it is stuck, so only these say so.
+    # The worker: the daemon answers `ipxd status` while it is stuck, so only these say so.
     rule("scan-stale", "ipx's scans have stopped", 'max(ipx_last_scan_age_seconds{job="ipx"})', "gt", 900, "5m",
          "No scan has finished for over 15 minutes; scans run at least every 10. The worker is stuck: its job and trace say on what."),
     rule("job-long", "ipx's worker is stuck on one job", 'max(ipx_worker_job_seconds{job="ipx"})', "gt", 1800, "1m",