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>

web/styles.css

@@ -288,7 +288,11 @@ body.dd-sidebar-open .dd-sidebar {
 .dd-context-grid { margin-top: var(--space-sm); }
 
 [data-state="stub"] .lt-section-body,
-#widget-context[data-state="empty"] .lt-kv-grid { opacity: 0.6; }
+#widget-context[data-state="empty"] .lt-kv-grid,
+#widget-repo[data-state="empty"] .lt-kv-grid { opacity: 0.6; }
+
+.lt-status a { color: inherit; text-shadow: none; }
+.dd-widget .lt-kv-val { overflow-wrap: anywhere; }
 
 /* ---- overlay ----------------------------------------------------------------- */
 .dd-overlay {