fix: stabilize Codex continuation and proxy retry recovery / 修复 Codex 续传与代理重试稳定性 (#257)

* wip: preserve local changes before upstream merge

* Improve proxy routing stability and add stable-first strategy

* Sync explicit-group routing strategy to eligible source routes

* Fix proxy retry and runtime health review issues

* fix: make proxy channel retry attempts configurable

* fix: harden proxy retry recovery and bookkeeping

* fix: address pr 257 review comments

---------

Co-authored-by: Cita <juricek.chen@gmail.com>

update-and-restart.sh

@@ -66,15 +66,21 @@ require_cmd docker
 require_cmd tar
 require_cmd git
 require_file "$COMPOSE_FILE"
-require_file "$COMPOSE_OVERRIDE_FILE"
 require_file "$ENV_FILE"
 
 COMPOSE_ARGS=(
   -f "$COMPOSE_FILE"
-  -f "$COMPOSE_OVERRIDE_FILE"
   --env-file "$ENV_FILE"
 )
 
+if [ -f "$COMPOSE_OVERRIDE_FILE" ]; then
+  COMPOSE_ARGS=(
+    -f "$COMPOSE_FILE"
+    -f "$COMPOSE_OVERRIDE_FILE"
+    --env-file "$ENV_FILE"
+  )
+fi
+
 if [ "$DO_PULL" -eq 1 ]; then
   echo "[0/5] Checking git worktree..."
   if [ -n "$(git -C "$ROOT_DIR" status --porcelain)" ]; then
@@ -89,36 +95,50 @@ else
 fi
 
 BACKUP_FILE=""
+RESTORE_ON_ERROR=0
+
+restore_if_failed() {
+  if [ "$RESTORE_ON_ERROR" -eq 1 ]; then
+    echo "Update failed after containers were stopped; attempting to restore service..." >&2
+    docker compose "${COMPOSE_ARGS[@]}" up -d --force-recreate || true
+  fi
+}
+
+trap restore_if_failed ERR
+
+if [ "$DO_PULL" -eq 1 ]; then
+  echo "[2/5] Stopping current containers..."
+else
+  echo "[2/4] Stopping current containers..."
+fi
+docker compose "${COMPOSE_ARGS[@]}" down --remove-orphans
+RESTORE_ON_ERROR=1
+
 if [ "$SKIP_BACKUP" -eq 0 ]; then
   mkdir -p "$DATA_DIR"
   BACKUP_FILE="$ROOT_DIR/docker/data-backup-$(date +%Y%m%d-%H%M%S).tar.gz"
   if [ "$DO_PULL" -eq 1 ]; then
-    echo "[2/5] Backing up data directory..."
+    echo "[3/5] Backing up data directory..."
   else
-    echo "[2/4] Backing up data directory..."
+    echo "[3/4] Backing up data directory..."
   fi
   tar -czf "$BACKUP_FILE" -C "$DATA_DIR" .
 else
   if [ "$DO_PULL" -eq 1 ]; then
-    echo "[2/5] Skipping data backup by request..."
+    echo "[3/5] Skipping data backup by request..."
   else
-    echo "[2/4] Skipping data backup by request..."
+    echo "[3/4] Skipping data backup by request..."
   fi
 fi
 
-if [ "$DO_PULL" -eq 1 ]; then
-  echo "[3/5] Stopping current containers..."
-else
-  echo "[3/4] Stopping current containers..."
-fi
-docker compose "${COMPOSE_ARGS[@]}" down --remove-orphans
-
 if [ "$DO_PULL" -eq 1 ]; then
   echo "[4/5] Rebuilding and starting containers..."
 else
   echo "[4/4] Rebuilding and starting containers..."
 fi
 docker compose "${COMPOSE_ARGS[@]}" up -d --build --force-recreate
+RESTORE_ON_ERROR=0
+trap - ERR
 
 echo
 echo "Container status:"