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/index.template.html

@@ -89,8 +89,8 @@
       </div>
     </section>
 
-    <section class="lt-frame dd-widget" id="widget-repo" data-state="stub">
-      <div class="lt-section-header">Repo / CI <span class="lt-badge lt-badge-sm dd-soon">v1.1</span></div>
+    <section class="lt-frame dd-widget" id="widget-repo" data-state="empty">
+      <div class="lt-section-header">Repo / CI</div>
       <div class="lt-section-body">
         <div class="lt-kv-grid">
           <span class="lt-kv-key">Repo</span><span class="lt-kv-val" data-field="repo">—</span>
@@ -99,7 +99,7 @@
           <span class="lt-kv-key">CI · HEAD</span><span class="lt-kv-val"><span class="lt-status lt-status-pending" data-field="ci">no data</span></span>
           <span class="lt-kv-key">Open PRs</span><span class="lt-kv-val" data-field="prs">—</span>
         </div>
-        <p class="dd-muted dd-stub-note">Gitea status for this session's repo arrives with devdesk-api.</p>
+        <p class="dd-muted dd-stub-note dd-repo-note"></p>
       </div>
     </section>