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-lib.sh

@@ -5,10 +5,19 @@
 # against a throwaway tmux server and state directory.
 
 DEVDESK_ENV=${DEVDESK_ENV:-/etc/devdesk/env}
-if [ -r "$DEVDESK_ENV" ]; then
-    # shellcheck source=/dev/null
-    . "$DEVDESK_ENV"
-fi
+# Local overrides go in env.local: it is never shipped, so upgrades don't prompt about it.
+DEVDESK_ENV_LOCAL=${DEVDESK_ENV_LOCAL:-${DEVDESK_ENV}.local}
+
+dd_load_env() {
+    local f
+    for f in "$DEVDESK_ENV" "$DEVDESK_ENV_LOCAL"; do
+        if [ -r "$f" ]; then
+            # shellcheck source=/dev/null
+            . "$f"
+        fi
+    done
+}
+dd_load_env
 
 : "${DEVDESK_PROJECTS_ROOT:=/root/code}"
 : "${DEVDESK_DEFAULT_DIR:=$DEVDESK_PROJECTS_ROOT}"
@@ -18,6 +27,9 @@ fi
 : "${DEVDESK_LIBEXEC:=/usr/lib/devdesk}"
 : "${DEVDESK_SHARE:=/usr/share/devdesk}"
 : "${DEVDESK_TMUX_UNIT:=devdesk-tmux.service}"
+: "${DEVDESK_GITEA_URL:=https://code.lotusguild.org}"
+: "${DEVDESK_GITEA_ALIASES:=10.10.10.63}"
+: "${DEVDESK_GITEA_TOKEN_FILE:=/etc/devdesk/gitea-token}"
 
 DEVDESK_REGISTRY="$DEVDESK_STATE_DIR/registry.json"
 DEVDESK_CONTEXT_DIR="$DEVDESK_STATE_DIR/context"