feat: live Repo/CI panel, env.local overrides (0.3.0)

- `devdesk attach --repo NAME` / `devdesk repo NAME`: git state of the session's
  folder (branch, ahead/behind, uncommitted changes) plus the Gitea commit
  status of HEAD and open PR count. Uses the anonymous API for public repos,
  or /etc/devdesk/gitea-token when present. Runs over the ttyd channel, so no
  sidecar is needed. The panel links to the repo, the CI run and PRs, and a
  notification fires when HEAD's CI finishes while the tab is in the background.
- /etc/devdesk/env.local is read after the packaged env and never shipped, so
  upgrades no longer stop at a conffile prompt.
- Hooks and status line only record for panes on DevDesk's own tmux server; the
  Claude wrapper re-reads env before every launch (so the Remote Control toggle
  applies on the next Claude restart).

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

libexec/devdesk-claude-run

@@ -15,10 +15,7 @@ SETTINGS="$DEVDESK_SHARE/claude-settings.json"
 # Re-read /etc/devdesk/env before every Claude launch, so changes (Remote
 # Control, CLAUDE_ARGS, …) apply on the next restart of Claude in a session.
 reload_config() {
-    if [ -r "$DEVDESK_ENV" ]; then
-        # shellcheck source=/dev/null
-        . "$DEVDESK_ENV"
-    fi
+    dd_load_env
     CLAUDE_BIN=${CLAUDE_BIN:-claude}
     read -r -a EXTRA <<<"${CLAUDE_ARGS:-}"
 }