feat: DevDesk v0.1.0, a persistent browser terminal for Claude Code

ttyd serves a single-file xterm.js UI styled with the LotusGuild TDS
(web_template base.css). Sessions live in a dedicated tmux server unit
(devdesk-tmux.service), so restarting or upgrading the web unit never
stops Claude. Each named session maps to a project directory. A Claude
SessionStart hook records the conversation ID, so after a reboot the
session resumes that exact conversation.

- bin/devdesk: attach / new / ls / end / pick, with an fzf picker
- ttyd requires a credential that NPM injects; origin check enabled
- debian/: dh 13 with --no-stop-on-upgrade for the tmux unit, bundled
  sha256-verified ttyd 1.7.7, lintian overrides, man page
- CI: lint, test, build, smoke-test, artifact; v* tags publish to the
  Gitea apt registry and create a release

Refs: tinker ticket 887531976

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

docs/devdesk.1

@@ -0,0 +1,60 @@
+.TH DEVDESK 1 "October 2026" "devdesk" "User Commands"
+.SH NAME
+devdesk \- persistent Claude Code sessions in tmux, shared by the browser and SSH
+.SH SYNOPSIS
+.B devdesk attach
+.RI [ NAME ]
+.br
+.B devdesk new
+.I NAME
+.br
+.B devdesk ls
+.br
+.B devdesk pick
+.br
+.B devdesk end
+.I NAME
+.SH DESCRIPTION
+.B devdesk
+manages the named sessions served at https://dev.lotusguild.org. Each session is
+a tmux session on the DevDesk server (\fI/run/devdesk/tmux.sock\fR, run by
+\fBdevdesk-tmux.service\fR) with a \fIclaude\fR window and a \fIshell\fR window,
+rooted in a project directory under \fBDEVDESK_PROJECTS_ROOT\fR.
+.PP
+Claude's conversation ID is recorded per session, so after a reboot the session
+resumes its own conversation.
+.SH COMMANDS
+.TP
+.B attach \fR[\fINAME\fR]
+Attach to session \fINAME\fR, creating it if needed. The default session
+(\fBmain\fR) uses the projects root; other names map to the project directory of
+that name or slug (\(lqtest code\(rq becomes \fBtest-code\fR). Without \fINAME\fR,
+opens the picker.
+.TP
+.B attach --list
+Print sessions and projects as JSON (used by the web UI).
+.TP
+.B new \fINAME\fR
+Create session \fINAME\fR detached, if it does not exist.
+.TP
+.B ls
+List running (\(bu) and dormant (\(ci) sessions.
+.TP
+.B pick
+Interactive picker (fzf).
+.TP
+.B end \fINAME\fR
+Stop the session and forget its recorded conversation.
+.SH FILES
+.TP
+.I /etc/devdesk/env
+Port, projects root, Claude binary and arguments, Remote Control switch.
+.TP
+.I /etc/devdesk/secret.env
+ttyd credential; the reverse proxy must send it as HTTP basic auth.
+.TP
+.I /var/lib/devdesk/registry.json
+Session to directory and Claude session ID mapping.
+.SH SEE ALSO
+.BR tmux (1),
+.BR claude (1)