feat: Linux one-click start pulls from Gitea ai_site

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/lib-aijz-deploy.sh

@@ -384,18 +384,57 @@ ${pub_line}
 EOF
 }
 
-git_pull_hard() {
-  local branch="${GIT_BRANCH:-master}"
-  echo "拉取代码（branch=$branch）..."
-  if ! git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
-    echo "错误: 当前不是 git 仓库，跳过拉取。" >&2
+# 默认代码源（可用 AIJZ_GIT_URL / GIT_BRANCH 覆盖）
+AIJZ_GIT_URL_DEFAULT="https://gitea.yuxindazhineng.com/whm/ai_site.git"
+
+ensure_git_origin() {
+  local url="${1:-${AIJZ_GIT_URL:-$AIJZ_GIT_URL_DEFAULT}}"
+  if ! command -v git >/dev/null 2>&1; then
+    echo "错误: 未安装 git，无法拉取代码。请先安装 git。" >&2
+    return 1
+  fi
+  if ! git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
+    echo "当前目录不是 git 仓库，初始化并关联 origin -> $url"
+    git init
+    git remote add origin "$url"
+    return 0
+  fi
+  if git remote get-url origin >/dev/null 2>&1; then
+    local cur
+    cur="$(git remote get-url origin)"
+    if [ "$cur" != "$url" ]; then
+      echo "更新 origin: $cur -> $url"
+      git remote set-url origin "$url"
+    fi
+  else
+    echo "添加 origin -> $url"
+    git remote add origin "$url"
+  fi
+}
+
+# 从 Gitea ai_site 拉取并与远程对齐（默认硬重置，保留未跟踪文件如 .env）
+# 环境变量：
+#   AIJZ_GIT_URL     仓库地址（默认 https://gitea.yuxindazhineng.com/whm/ai_site.git）
+#   GIT_BRANCH       分支（默认 main）
+#   FORCE_GIT_RESET  1=reset --hard 对齐远程（默认 1）；0=仅快进合并
+git_pull_hard() {
+  local url="${AIJZ_GIT_URL:-$AIJZ_GIT_URL_DEFAULT}"
+  local branch="${GIT_BRANCH:-main}"
+  echo "拉取代码（$url  branch=$branch）..."
+  ensure_git_origin "$url" || return 1
+  if ! git fetch origin --progress; then
+    echo "错误: git fetch 失败。私有仓库请配置凭据，或设置 AIJZ_GIT_URL 为带 token 的地址。" >&2
+    return 1
+  fi
+  if ! git rev-parse --verify "origin/$branch" >/dev/null 2>&1; then
+    echo "错误: 远程不存在分支 origin/$branch" >&2
     return 1
   fi
-  git fetch origin --progress
   if [ "${FORCE_GIT_RESET:-1}" = "1" ]; then
+    git checkout -B "$branch" "origin/$branch"
     git reset --hard "origin/$branch"
   else
-    git checkout "$branch" 2>/dev/null || true
+    git checkout "$branch" 2>/dev/null || git checkout -b "$branch" "origin/$branch"
     git merge --ff-only "origin/$branch"
   fi
   echo "当前: $(git rev-parse --short HEAD) $(git log -1 --pretty=%s)"