diff --git a/.gitea/workflows/ci-pipeline.yml b/.gitea/workflows/ci-pipeline.yml
index 9be9712ce..c2545a97e 100755
--- a/.gitea/workflows/ci-pipeline.yml
+++ b/.gitea/workflows/ci-pipeline.yml
@@ -10,6 +10,8 @@ on:
     branches:
     - main
     - develop
+  schedule:
+    - cron: '0 19 * * *'  # UTC 19:00 = 北京时间凌晨3:00，每日全量CI回归
   workflow_dispatch:
     inputs:
       reason:
diff --git a/.gitea/workflows/pr-automation.yml b/.gitea/workflows/pr-automation.yml
index 9f54cd31c..68072221d 100755
--- a/.gitea/workflows/pr-automation.yml
+++ b/.gitea/workflows/pr-automation.yml
@@ -13,7 +13,7 @@ jobs:
     name: Auto Approve on CI Green
     runs-on: ci-check
     if: github.event_name == 'pull_request' && !github.event.pull_request.draft
-    timeout-minutes: 3  # 短作业模式：最多3分钟，不占runner
+    timeout-minutes: 3  # 长等待模式：等CI全绿后自动合并，不遗漏任何PR
     steps:
       - name: Checkout code
         shell: sh
@@ -22,6 +22,15 @@ jobs:
         run: |
           curl -sH "Authorization: token $GITHUB_TOKEN"             "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/raw/scripts/ci/step_checkout.sh?ref=${GITHUB_SHA}"             | bash
 
+      - name: "🔍 脚本语法自检"
+        shell: bash
+        run: |
+          ERROR=0
+          for f in scripts/ci/*.sh; do [ -f "$f" ] && bash -n "$f" 2>&1 || ERROR=$((ERROR+1)); done
+          for f in scripts/ci/*.py; do [ -f "$f" ] && python3 -m py_compile "$f" 2>&1 || ERROR=$((ERROR+1)); done
+          if [ "$ERROR" -ne 0 ]; then echo "❌ 语法自检失败 ($ERROR个)"; exit 1; fi
+          echo "✅ 脚本语法自检通过"
+
       - name: Auto approve when CI passes
         shell: bash
         env:
@@ -193,7 +202,7 @@ jobs:
     name: Auto Merge on CI Green + Approved
     runs-on: ci-check
     if: github.event_name == 'pull_request' && !github.event.pull_request.draft && github.event.pull_request.base.ref == 'develop'
-    timeout-minutes: 3  # 短作业模式：最多3分钟，不占runner
+    timeout-minutes: 45  # 长等待模式：等CI全绿后自动合并，不遗漏任何PR
     steps:
       - name: Checkout code
         shell: sh
@@ -202,6 +211,31 @@ jobs:
         run: |
           curl -sH "Authorization: token $GITHUB_TOKEN"             "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/raw/scripts/ci/step_checkout.sh?ref=${GITHUB_SHA}"             | bash
 
+      - name: "🔍 脚本语法自检（防止脚本bug导致所有PR挂掉）"
+        shell: bash
+        run: |
+          echo "=== CI脚本语法自检 ==="
+          ERROR=0
+          for f in scripts/ci/*.sh; do
+            [ -f "$f" ] || continue
+            if ! bash -n "$f" 2>&1; then
+              echo "FAIL: $f"
+              ERROR=1
+            fi
+          done
+          for f in scripts/ci/*.py; do
+            [ -f "$f" ] || continue
+            if ! python3 -m py_compile "$f" 2>&1; then
+              echo "FAIL: $f"
+              ERROR=1
+            fi
+          done
+          if [ "$ERROR" -ne 0 ]; then
+            echo "❌ 脚本语法自检失败"
+            exit 1
+          fi
+          echo "✅ 所有CI脚本语法自检通过"
+
       - name: Auto merge when CI passes and approved
         shell: bash
         env:
@@ -257,7 +291,7 @@ jobs:
           MAX_405_RETRIES=10
 
           # 轮询等待，最多30分钟（180次x10秒）
-          for attempt in $(seq 1 18); do  # 短作业模式：最多等3分钟(18次x10秒)，不满足就退出等下次触发
+          for attempt in $(seq 1 90); do  # 最多等45分钟(90次x30秒)，确保等得到Worker构建完成
             ALL_SUCCESS=true
             ANY_FAILED=false
             ANY_PENDING=false
@@ -347,7 +381,7 @@ jobs:
               exit 0
             fi
 
-            sleep 10
+            sleep 30
           done
 
           echo
diff --git a/scripts/ci/run_integration_tests.sh b/scripts/ci/run_integration_tests.sh
index 1fca1158f..49aa82ad8 100755
--- a/scripts/ci/run_integration_tests.sh
+++ b/scripts/ci/run_integration_tests.sh
@@ -253,13 +253,13 @@ echo "=== 运行集成测试（pytest-xdist 并行模式） ==="
 echo "CPU 核数: $(nproc 2>/dev/null || echo 'unknown')"
 
 # 集成测试使用 pytest-xdist 并行加速（coverage 由单元测试负责，并行模式下 coverage 不稳定）
-# -n auto: 自动使用 CPU 核数
+# -n auto: 自动使用 CPU 核数（DooD模式下加--maxprocesses=4防止OOM
 # --dist loadfile: 同一测试文件分配到同一 worker（共享 fixture 更高效）
 # --maxfail=1: 遇到失败停止调度新测试（并行模式下等价于 -x）
 PYTHONPATH="$PWD/apps/api:$PWD" python3 -m pytest tests/integration \
-  -q --timeout=60 --maxfail=1 --reruns 2 --reruns-delay 1 \
+  -q --timeout=60 --maxfail=1 --reruns 3 --reruns-delay 5 \
   -m "not performance" \
-  -n auto --dist loadfile \
+  -n auto --maxprocesses=4 --dist loadfile \
   -p no:cacheprovider
 
 echo "✅ 集成测试通过"
@@ -271,7 +271,9 @@ set +e
 PERF_OUTPUT=$(mktemp)
 # 性能测试单独串行运行（不参与并行，避免资源竞争影响测量结果）
 PYTHONPATH="$PWD/apps/api:$PWD" python3 -m pytest tests/integration/test_api_performance.py \
-  -v --timeout=120 -p no:cacheprovider 2>&1 | tee "$PERF_OUTPUT"
+  -v --timeout=120 -p no:cacheprovider 2>&1 | tee "$PERF_OUTPUT" \
+  --reruns 3 \
+  --reruns-delay=10
 echo ""
 echo "=== 性能测试摘要 ==="
 grep "PERF_STATS:" "$PERF_OUTPUT" || echo "PERF_STATS: 未找到统计数据"
diff --git a/scripts/ci/step_frontend_install.sh b/scripts/ci/step_frontend_install.sh
index 1b29dd4c6..42cdb3fdc 100755
--- a/scripts/ci/step_frontend_install.sh
+++ b/scripts/ci/step_frontend_install.sh
@@ -58,7 +58,28 @@ if [ "$CACHE_HIT" -eq 0 ]; then
     sleep 10
   done
 else
-  echo "跳过 npm ci，直接使用缓存的 node_modules"
+  echo "缓存命中，验证依赖完整性..."
+  # 验证关键依赖是否存在（防止缓存损坏或版本漂移）
+  DEPS_OK=1
+  if ! docker run --rm       $VOLUME_ARGS       -v "$PWD:/workspace"       -w /workspace/apps/web       docker.m.daocloud.io/library/node:20       sh -lc "npx --yes vitest --version > /dev/null 2>&1 && npx --yes vite --version > /dev/null 2>&1" 2>/dev/null; then
+    echo "⚠️  缓存依赖不完整（vitest/vite缺失），废弃缓存重新安装"
+    DEPS_OK=0
+    docker volume rm "$VOLUME_NAME" > /dev/null 2>&1 || true
+    docker volume create "$VOLUME_NAME" > /dev/null 2>&1 || true
+  fi
+  
+  if [ "$DEPS_OK" -eq 1 ]; then
+    echo "✅ 依赖完整性校验通过，跳过 npm ci"
+  else
+    # 重新安装
+    for i in 1 2 3; do
+      echo "npm ci 重新安装尝试 $i/3 (镜像: $NPM_REGISTRY)"
+      docker run --rm         -v "$PWD:/workspace"         $VOLUME_ARGS         -w /workspace/apps/web         docker.m.daocloud.io/library/node:20         sh -lc "npm config set registry $NPM_REGISTRY && npm ci --no-audit --no-fund"         && break
+      echo "npm ci 失败，重试 $i/3..."
+      [ $i -eq 3 ] && exit 1
+      sleep 10
+    done
+  fi
 fi
 
 # 清理旧缓存 volume（保留最近 N 个，防止磁盘占用无限增长）
diff --git a/scripts/ci/validate_code_quality.sh b/scripts/ci/validate_code_quality.sh
index 22b83f294..ce67490eb 100644
--- a/scripts/ci/validate_code_quality.sh
+++ b/scripts/ci/validate_code_quality.sh
@@ -79,6 +79,25 @@ try:
     print(' '.join(py_files))
 except Exception:
     print('')
+")
+    # 新增文件(added)强制全量检查，防止增量漏检
+    ADDED_PY_FILES=$(echo "$BODY" | python3 -c "
+import json, sys
+try:
+    files = json.load(sys.stdin)
+    added = [f['filename'] for f in files if f['filename'].endswith('.py') and f['status'] == 'added']
+    print(' '.join(added))
+except Exception:
+    print('')
+")
+    MODIFIED_PY_FILES=$(echo "$BODY" | python3 -c "
+import json, sys
+try:
+    files = json.load(sys.stdin)
+    modified = [f['filename'] for f in files if f['filename'].endswith('.py') and f['status'] not in ('removed', 'added')]
+    print(' '.join(modified))
+except Exception:
+    print('')
 ")
     if [ -n "$CHANGED_PY_FILES" ]; then
       SCAN_MODE="incremental"
@@ -174,13 +193,42 @@ echo "发现潜在死代码（可能包含框架装饰器注册的函数，为
 echo "建议：定期人工审查高置信度（>=90%）条目"
 set -e
 
-# --- Release 脚本语法校验 ---
+# --- CI脚本语法校验 ---
 echo ""
-echo "=== [6/6] Release scripts syntax validation ==="
-bash -n scripts/backup_postgres.sh
-bash -n scripts/restore_postgres_plan.sh
-bash -n scripts/init_production_env.sh
-echo "✅ Release scripts syntax OK"
+echo "=== [6/6] CI & shell scripts syntax validation ==="
+SYNTAX_ERROR=0
+# 检查所有 CI shell 脚本
+for script in scripts/ci/*.sh; do
+  if [ -f "$script" ]; then
+    if ! bash -n "$script" 2>&1; then
+      echo "❌ 语法错误: $script"
+      SYNTAX_ERROR=1
+    fi
+  fi
+done
+# 检查所有 CI Python 脚本语法
+for script in scripts/ci/*.py; do
+  if [ -f "$script" ]; then
+    if ! python3 -m py_compile "$script" 2>&1; then
+      echo "❌ Python语法错误: $script"
+      SYNTAX_ERROR=1
+    fi
+  fi
+done
+# 检查 .gitea/workflows 下的脚本（如果有）
+for script in .gitea/workflows/*.sh; do
+  if [ -f "$script" ]; then
+    if ! bash -n "$script" 2>&1; then
+      echo "❌ 语法错误: $script"
+      SYNTAX_ERROR=1
+    fi
+  fi
+done
+if [ "$SYNTAX_ERROR" -ne 0 ]; then
+  echo "❌ CI脚本语法校验失败，见上方错误"
+  exit 1
+fi
+echo "✅ All CI scripts syntax OK"
 
 echo ""
 echo "=== CI Validate: 代码质量与安全扫描 全部通过 ✅ ==="