diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..ee68de5
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,16 @@
+# 大二进制文件走 Git LFS，避免仓库膨胀 / 网页预览超时
+# 提交这类文件前，先在本机执行一次： git lfs install
+*.pptx filter=lfs diff=lfs merge=lfs -text
+*.ppt  filter=lfs diff=lfs merge=lfs -text
+*.docx filter=lfs diff=lfs merge=lfs -text
+*.doc  filter=lfs diff=lfs merge=lfs -text
+*.xlsx filter=lfs diff=lfs merge=lfs -text
+*.xls  filter=lfs diff=lfs merge=lfs -text
+*.pdf  filter=lfs diff=lfs merge=lfs -text
+*.zip  filter=lfs diff=lfs merge=lfs -text
+*.rar  filter=lfs diff=lfs merge=lfs -text
+*.7z   filter=lfs diff=lfs merge=lfs -text
+*.mp4  filter=lfs diff=lfs merge=lfs -text
+*.mov  filter=lfs diff=lfs merge=lfs -text
+*.psd  filter=lfs diff=lfs merge=lfs -text
+*.ai   filter=lfs diff=lfs merge=lfs -text
diff --git a/.gitea/workflows/ai-review.yml b/.gitea/workflows/ai-review.yml
index 06ee1d3..81c76df 100644
--- a/.gitea/workflows/ai-review.yml
+++ b/.gitea/workflows/ai-review.yml
@@ -1,5 +1,7 @@
 # AI 代码审查：每次 PR 触发，用 Claude Code 调用智谱 GLM(glm-5.2) 审查 diff，
 # 并把结论评论到 PR。走 GLM 的 Anthropic 兼容端点，无需访问 Anthropic 官方。
+# 密钥用 Gitea 的 ${{ secrets.* }}（同仓库 PR 正常下发；来自 fork 的跨仓库 PR 会被
+# Gitea 隐藏密钥 → 自动跳过审查，不报错）。请在团队仓库内开同仓库 PR。
 name: AI Code Review
 on:
   pull_request:
@@ -9,33 +11,45 @@ jobs:
   review:
     runs-on: ubuntu-latest
     env:
-      # 关键：把 Claude Code 指向智谱 GLM 的 Anthropic 兼容端点（已验证可用）
       ANTHROPIC_BASE_URL: https://open.bigmodel.cn/api/anthropic
       ANTHROPIC_API_KEY: ${{ secrets.ZHIPU_API_KEY }}
       ANTHROPIC_MODEL: glm-5.2
-      CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC: "1"   # 关闭遥测，避免访问被墙地址
+      CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC: "1"
       DISABLE_AUTOUPDATER: "1"
       IS_SANDBOX: "1"   # CI 容器以 root 运行，需此项才能用 --dangerously-skip-permissions
     steps:
       - name: 检出代码
-        # 手动克隆，避免从 github.com 下载 actions/checkout（内网不可达）
         env:
           REVIEW_PAT: ${{ secrets.REVIEW_PAT }}
         run: |
-          git clone "http://oauth2:${REVIEW_PAT}@gitea:3000/${{ gitea.repository }}.git" .
+          if [ -z "$REVIEW_PAT" ]; then
+            echo "::warning::REVIEW_PAT 为空：通常是来自 fork 的跨仓库 PR（Gitea 会隐藏密钥）。请在团队仓库内开同仓库 PR。本次跳过审查。"
+            echo "SKIP_REVIEW=1" >> "$GITHUB_ENV"
+            exit 0
+          fi
+          git config --global http.extraHeader "Authorization: Basic $(printf 'oauth2:%s' "$REVIEW_PAT" | base64 -w0)"
+          git clone "http://gitea:3000/${{ gitea.repository }}.git" .
           git checkout "${{ gitea.event.pull_request.head.ref }}"
 
       - name: 生成 PR diff
+        if: env.SKIP_REVIEW != '1'
         run: |
           BASE="${{ gitea.event.pull_request.base.ref }}"
           git fetch origin "$BASE"
           git diff "origin/$BASE...HEAD" > pr.diff
           echo "diff 行数: $(wc -l < pr.diff)"
 
-      - name: 安装 Claude Code
-        run: npm install -g @anthropic-ai/claude-code --registry=https://registry.npmmirror.com
+      - name: 安装 Claude Code（已装则跳过）
+        if: env.SKIP_REVIEW != '1'
+        run: |
+          if command -v claude >/dev/null 2>&1; then
+            echo "claude 已存在，跳过安装"
+          else
+            npm install -g @anthropic-ai/claude-code --registry=https://registry.npmmirror.com
+          fi
 
       - name: 运行 AI 审查
+        if: env.SKIP_REVIEW != '1'
         # Claude Code 会自动读取本仓库 CLAUDE.md 与 .claude/skills/*
         run: |
           claude -p "$(cat .claude/review-prompt.md)" \
@@ -45,6 +59,7 @@ jobs:
                  --max-turns 15 > review.md || true
 
       - name: 把审查结论评论到 PR
+        if: env.SKIP_REVIEW != '1'
         env:
           REVIEW_PAT: ${{ secrets.REVIEW_PAT }}
           API: ${{ vars.MAIN_API }}
@@ -52,11 +67,11 @@ jobs:
           PR: ${{ gitea.event.pull_request.number }}
         run: |
           if [ -s review.md ]; then
-            BODY=$(node -e 'let d="";process.stdin.on("data",c=>d+=c).on("end",()=>process.stdout.write(JSON.stringify({body:d})))' < review.md)
+            node -e 'let d="";process.stdin.on("data",c=>d+=c).on("end",()=>process.stdout.write(JSON.stringify({body:d})))' < review.md > /tmp/body.json
             curl -fsS -X POST "$API/repos/$REPO/issues/$PR/comments" \
               -H "Authorization: token $REVIEW_PAT" \
               -H "Content-Type: application/json" \
-              -d "$BODY"
+              --data @/tmp/body.json
           else
             echo "review.md 为空，跳过评论"
           fi
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