diff --git a/.gitea/workflows/ci-pipeline.yml b/.gitea/workflows/ci-pipeline.yml
index 0e3a48ca3..9f1a2c5a3 100755
--- a/.gitea/workflows/ci-pipeline.yml
+++ b/.gitea/workflows/ci-pipeline.yml
@@ -121,12 +121,12 @@ jobs:
         [ -f /tmp/ci_job_start_time ] && START_TIME=$(cat /tmp/ci_job_start_time)
         curl -sfH "Authorization: token ${GITHUB_TOKEN:-$GITEA_TOKEN}" -o /tmp/_ci_trace.py "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/raw/scripts/ci/ci_trace_report.py?ref=${GITHUB_SHA}" 2>/dev/null && python3 /tmp/_ci_trace.py --service xiaoxia-saas-ci --status $STATUS --start-time "$START_TIME" || true
 
-  validate-code-quality:
+  validate-style:
     needs: dedupe-check
     if: always() && needs.dedupe-check.outputs.skip_tests != 'true'
-    name: Validate - Code Quality
+    name: Validate - Style
     runs-on: ci-l2
-    timeout-minutes: 8
+    timeout-minutes: 6
     env:
       PIP_CACHE_DIR: /root/.cache/pip
       PIP_NO_CACHE_DIR: ''
@@ -152,9 +152,9 @@ jobs:
       uses: actions/cache@v4
       with:
         path: /root/.cache/pip
-        key: ${{ runner.os }}-pip-codequality-${{ hashFiles('requirements*.txt') }}
+        key: ${{ runner.os }}-pip-style-${{ hashFiles('requirements*.txt') }}
         restore-keys: |
-          ${{ runner.os }}-pip-codequality-
+          ${{ runner.os }}-pip-style-
           ${{ runner.os }}-pip-
     - name: Install dependencies
       shell: sh
@@ -178,17 +178,9 @@ jobs:
           [ $i -eq 3 ] && exit 1
           sleep 5
         done
-        for i in 1 2 3; do
-          python3 -m pip install --no-binary :all: black==26.5.1 isort==8.0.1 && break
-          echo "pip install black/isort 失败，重试 $i/3..."
-          [ $i -eq 3 ] && exit 1
-          sleep 5
-        done
-    - name: Run code quality and security checks
+    - name: Run style checks
       shell: bash
-      env:
-        GITHUB_TOKEN: ${{ github.token }}
-      run: bash scripts/ci/validate_code_quality.sh
+      run: bash scripts/ci/validate_style.sh
     - name: Auto-fix formatting (black + isort)
       if: failure()
       shell: sh
@@ -204,7 +196,7 @@ jobs:
         CI_WEBHOOK_URL: ${{ secrets.CI_WEBHOOK_URL }}
       run: |
         set +e
-        FAILED_JOB="Validate - Code Quality" python3 scripts/ci_notify_failure.py
+        FAILED_JOB="Validate - Style" python3 scripts/ci_notify_failure.py
     - name: Job duration summary
       if: always()
       shell: sh
@@ -217,7 +209,7 @@ jobs:
         CI_NOTIFY_WEBHOOK: ${{ secrets.CI_NOTIFY_WEBHOOK }}
       run: |
         set +e
-        NOTIFY_MODE=failure JOB_NAME="Validate - Code Quality" python3 scripts/ci_notify.py
+        NOTIFY_MODE=failure JOB_NAME="Validate - Style" python3 scripts/ci_notify.py
     - name: Report CI trace
       if: always()
       shell: sh
@@ -230,12 +222,16 @@ jobs:
         [ -f /tmp/ci_job_start_time ] && START_TIME=$(cat /tmp/ci_job_start_time)
         python3 scripts/ci/ci_trace_report.py --service xiaoxia-saas-ci --status $STATUS --start-time "$START_TIME" || true
 
-  validate-type-check:
+
+  validate-security:
     needs: dedupe-check
     if: always() && needs.dedupe-check.outputs.skip_tests != 'true'
-    name: Validate - Type Check (mypy)
+    name: Validate - Security
     runs-on: ci-l2
     timeout-minutes: 8
+    env:
+      PIP_CACHE_DIR: /root/.cache/pip
+      PIP_NO_CACHE_DIR: ''
     permissions:
       contents: read
     steps:
@@ -254,6 +250,114 @@ jobs:
     - name: Record job start time
       shell: sh
       run: bash scripts/ci/step_timer_start.sh
+    - name: Cache pip dependencies
+      uses: actions/cache@v4
+      with:
+        path: /root/.cache/pip
+        key: ${{ runner.os }}-pip-security-${{ hashFiles('requirements*.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-security-
+          ${{ runner.os }}-pip-
+    - name: Install dependencies
+      shell: sh
+      run: |
+        set -eu
+        for i in 1 2 3; do
+          python3 -m pip install -q -r requirements-base.txt && break
+          echo "pip install requirements-base.txt 失败，重试 $i/3..."
+          [ $i -eq 3 ] && exit 1
+          sleep 5
+        done
+        for i in 1 2 3; do
+          python3 -m pip install -q -r requirements.txt && break
+          echo "pip install requirements.txt 失败，重试 $i/3..."
+          [ $i -eq 3 ] && exit 1
+          sleep 5
+        done
+        for i in 1 2 3; do
+          python3 -m pip install -q -r requirements-dev.txt && break
+          echo "pip install requirements-dev.txt 失败，重试 $i/3..."
+          [ $i -eq 3 ] && exit 1
+          sleep 5
+        done
+    - name: Run security checks
+      shell: bash
+      env:
+        GITHUB_TOKEN: ${{ github.token }}
+      run: bash scripts/ci/validate_security.sh
+    - name: CI failure notification
+      if: failure()
+      shell: sh
+      env:
+        GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+        CI_WEBHOOK_URL: ${{ secrets.CI_WEBHOOK_URL }}
+      run: |
+        set +e
+        FAILED_JOB="Validate - Security" python3 scripts/ci_notify_failure.py
+    - name: Job duration summary
+      if: always()
+      shell: sh
+      run: bash scripts/ci/step_timer_end.sh
+    - name: Notify on failure
+      continue-on-error: true
+      if: failure()
+      shell: sh
+      env:
+        CI_NOTIFY_WEBHOOK: ${{ secrets.CI_NOTIFY_WEBHOOK }}
+      run: |
+        set +e
+        NOTIFY_MODE=failure JOB_NAME="Validate - Security" python3 scripts/ci_notify.py
+    - name: Report CI trace
+      if: always()
+      shell: sh
+      env:
+        AGENTLOOP_LICENSE_KEY: ${{ secrets.AGENTLOOP_LICENSE_KEY }}
+      run: |
+        STATUS="ok"
+        [ ${{ job.status }} = "success" ] || STATUS="error"
+        START_TIME=""
+        [ -f /tmp/ci_job_start_time ] && START_TIME=$(cat /tmp/ci_job_start_time)
+        python3 scripts/ci/ci_trace_report.py --service xiaoxia-saas-ci --status $STATUS --start-time "$START_TIME" || true
+
+
+  validate-python:
+    needs: dedupe-check
+    if: always() && needs.dedupe-check.outputs.skip_tests != 'true'
+    name: Validate - Python (mypy + alembic)
+    runs-on: ci-l2
+    timeout-minutes: 10
+    env:
+      PIP_CACHE_DIR: /root/.cache/pip
+      PIP_NO_CACHE_DIR: ''
+      DATABASE_URL: postgresql+psycopg://postgres:postgres@host.docker.internal:5432/xiaoxia_saas
+      USE_IN_MEMORY_DB: 'false'
+      CI_USE_SHARED_PG: 'true'
+    permissions:
+      contents: read
+    steps:
+    - name: Checkout code
+      shell: sh
+      env:
+        GITHUB_TOKEN: ${{ github.token }}
+      run: |
+        curl -sfH "Authorization: token $GITHUB_TOKEN" -o /tmp/_ci_checkout.sh "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/raw/scripts/ci/step_checkout.sh?ref=${GITHUB_SHA}" && bash /tmp/_ci_checkout.sh
+    - name: Zombie run selfcheck
+      shell: sh
+      env:
+        GITHUB_TOKEN: ${{ github.token }}
+        GITHUB_RUN_ID: ${{ github.run_id }}
+      run: bash scripts/ci/ci_run_selfcheck.sh
+    - name: Record job start time
+      shell: sh
+      run: bash scripts/ci/step_timer_start.sh
+    - name: Cache pip dependencies
+      uses: actions/cache@v4
+      with:
+        path: /root/.cache/pip
+        key: ${{ runner.os }}-pip-python-${{ hashFiles('requirements*.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-python-
+          ${{ runner.os }}-pip-
     - name: Install dependencies
       shell: sh
       run: |
@@ -279,6 +383,9 @@ jobs:
     - name: Run mypy type check
       shell: bash
       run: bash scripts/ci/validate_mypy.sh
+    - name: Run alembic migration validation
+      shell: bash
+      run: bash scripts/ci/validate_migration.sh
     - name: CI failure notification
       if: failure()
       shell: sh
@@ -287,7 +394,7 @@ jobs:
         CI_WEBHOOK_URL: ${{ secrets.CI_WEBHOOK_URL }}
       run: |
         set +e
-        FAILED_JOB="Validate - Type Check (mypy)" python3 scripts/ci_notify_failure.py
+        FAILED_JOB="Validate - Python (mypy + alembic)" python3 scripts/ci_notify_failure.py
     - name: Job duration summary
       if: always()
       shell: sh
@@ -300,7 +407,7 @@ jobs:
         CI_NOTIFY_WEBHOOK: ${{ secrets.CI_NOTIFY_WEBHOOK }}
       run: |
         set +e
-        NOTIFY_MODE=failure JOB_NAME="Validate - Type Check (mypy)" python3 scripts/ci_notify.py
+        NOTIFY_MODE=failure JOB_NAME="Validate - Python (mypy + alembic)" python3 scripts/ci_notify.py
     - name: Report CI trace
       if: always()
       shell: sh
@@ -313,92 +420,6 @@ jobs:
         [ -f /tmp/ci_job_start_time ] && START_TIME=$(cat /tmp/ci_job_start_time)
         python3 scripts/ci/ci_trace_report.py --service xiaoxia-saas-ci --status $STATUS --start-time "$START_TIME" || true
 
-  validate-migration:
-    needs: dedupe-check
-    if: always() && needs.dedupe-check.outputs.skip_tests != 'true'
-    name: Validate - Migration (alembic)
-    runs-on: ci-l2
-    timeout-minutes: 8
-    permissions:
-      contents: read
-    env:
-      DATABASE_URL: postgresql+psycopg://postgres:postgres@host.docker.internal:5432/xiaoxia_saas
-      USE_IN_MEMORY_DB: 'false'
-      CI_USE_SHARED_PG: 'true'
-    steps:
-    - name: Checkout code
-      shell: sh
-      env:
-        GITHUB_TOKEN: ${{ github.token }}
-      run: |
-        curl -sfH "Authorization: token $GITHUB_TOKEN" -o /tmp/_ci_checkout.sh "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/raw/scripts/ci/step_checkout.sh?ref=${GITHUB_SHA}" && bash /tmp/_ci_checkout.sh
-    - name: Zombie run selfcheck
-      shell: sh
-      env:
-        GITHUB_TOKEN: ${{ github.token }}
-        GITHUB_RUN_ID: ${{ github.run_id }}
-      run: bash scripts/ci/ci_run_selfcheck.sh
-    - name: Record job start time
-      shell: sh
-      run: bash scripts/ci/step_timer_start.sh
-    - name: Install dependencies
-      shell: sh
-      run: |
-        set -eu
-        for i in 1 2 3; do
-          python3 -m pip install -q -r requirements-base.txt && break
-          echo "pip install requirements-base.txt 失败，重试 $i/3..."
-          [ $i -eq 3 ] && exit 1
-          sleep 5
-        done
-        for i in 1 2 3; do
-          python3 -m pip install -q -r requirements.txt && break
-          echo "pip install requirements.txt 失败，重试 $i/3..."
-          [ $i -eq 3 ] && exit 1
-          sleep 5
-        done
-        for i in 1 2 3; do
-          python3 -m pip install -q -r requirements-dev.txt && break
-          echo "pip install requirements-dev.txt 失败，重试 $i/3..."
-          [ $i -eq 3 ] && exit 1
-          sleep 5
-        done
-    - name: Run alembic migration validation
-      shell: bash
-      run: bash scripts/ci/validate_migration.sh
-    - name: CI failure notification
-      if: failure()
-      shell: sh
-      env:
-        GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
-        CI_WEBHOOK_URL: ${{ secrets.CI_WEBHOOK_URL }}
-      run: |
-        set +e
-        FAILED_JOB="Validate - Migration (alembic)" python3 scripts/ci_notify_failure.py
-    - name: Job duration summary
-      if: always()
-      shell: sh
-      run: bash scripts/ci/step_timer_end.sh
-    - name: Notify on failure
-      continue-on-error: true
-      if: failure()
-      shell: sh
-      env:
-        CI_NOTIFY_WEBHOOK: ${{ secrets.CI_NOTIFY_WEBHOOK }}
-      run: |
-        set +e
-        NOTIFY_MODE=failure JOB_NAME="Validate - Migration (alembic)" python3 scripts/ci_notify.py
-    - name: Report CI trace
-      if: always()
-      shell: sh
-      env:
-        AGENTLOOP_LICENSE_KEY: ${{ secrets.AGENTLOOP_LICENSE_KEY }}
-      run: |
-        STATUS="ok"
-        [ ${{ job.status }} = "success" ] || STATUS="error"
-        START_TIME=""
-        [ -f /tmp/ci_job_start_time ] && START_TIME=$(cat /tmp/ci_job_start_time)
-        python3 scripts/ci/ci_trace_report.py --service xiaoxia-saas-ci --status $STATUS --start-time "$START_TIME" || true
 
   unit-tests:
     needs: [check-frontend-only, dedupe-check]
@@ -1384,8 +1405,9 @@ jobs:
     runs-on: runtime-builder
     timeout-minutes: ${{ matrix.timeout }}
     needs:
-      - validate-code-quality
-      - validate-type-check
+      - validate-style
+      - validate-security
+      - validate-python
       - unit-tests
       - frontend-lint
       - frontend-unit-test
@@ -1871,9 +1893,9 @@ jobs:
     if: always() && github.event_name == 'pull_request'
     needs:
       - check-frontend-only
-      - validate-code-quality
-      - validate-type-check
-      - validate-migration
+      - validate-style
+      - validate-security
+      - validate-python
       - unit-tests
       - integration-tests
       - frontend-lint
@@ -1889,9 +1911,9 @@ jobs:
           PR_NUMBER: ${{ github.event.pull_request.number }}
           PR_HEAD_SHA: ${{ github.event.pull_request.head.sha }}
           RESULT_CHECK_FRONTEND: ${{ needs.check-frontend-only.result }}
-          RESULT_CODE_QUALITY: ${{ needs.validate-code-quality.result }}
-          RESULT_TYPE_CHECK: ${{ needs.validate-type-check.result }}
-          RESULT_MIGRATION: ${{ needs.validate-migration.result }}
+          RESULT_STYLE: ${{ needs.validate-style.result }}
+          RESULT_SECURITY: ${{ needs.validate-security.result }}
+          RESULT_PYTHON: ${{ needs.validate-python.result }}
           RESULT_UNIT_TESTS: ${{ needs.unit-tests.result }}
           RESULT_INTEGRATION: ${{ needs.integration-tests.result }}
           RESULT_FRONTEND_LINT: ${{ needs.frontend-lint.result }}
@@ -1903,9 +1925,9 @@ jobs:
           echo ""
           echo "各job结果:"
           echo "  check-frontend-only: $RESULT_CHECK_FRONTEND"
-          echo "  validate-code-quality: $RESULT_CODE_QUALITY"
-          echo "  validate-type-check: $RESULT_TYPE_CHECK"
-          echo "  validate-migration: $RESULT_MIGRATION"
+          echo "  validate-style: $RESULT_STYLE"
+          echo "  validate-security: $RESULT_SECURITY"
+          echo "  validate-python: $RESULT_PYTHON"
           echo "  unit-tests: $RESULT_UNIT_TESTS"
           echo "  integration-tests: $RESULT_INTEGRATION"
           echo "  frontend-lint: $RESULT_FRONTEND_LINT"
@@ -1945,9 +1967,9 @@ jobs:
           # 必填检查项（根据PR类型决定）
           # 通用检查（所有PR都必须过）
           REQUIRED_GENERAL=(
-            "validate-code-quality:$RESULT_CODE_QUALITY"
-            "validate-type-check:$RESULT_TYPE_CHECK"
-            "validate-migration:$RESULT_MIGRATION"
+            "validate-style:$RESULT_STYLE"
+            "validate-security:$RESULT_SECURITY"
+            "validate-python:$RESULT_PYTHON"
             "frontend-lint:$RESULT_FRONTEND_LINT"
             "build-pr:$RESULT_BUILD_PR"
             "ai-code-review:$AI_REVIEW_STATUS"
diff --git a/scripts/ci/validate_code_quality.sh b/scripts/ci/validate_security.sh
old mode 100644
new mode 100755
similarity index 61%
rename from scripts/ci/validate_code_quality.sh
rename to scripts/ci/validate_security.sh
index 874c9c6cf..b08904327
--- a/scripts/ci/validate_code_quality.sh
+++ b/scripts/ci/validate_security.sh
@@ -1,13 +1,13 @@
 #!/bin/bash
-# CI Validate: 代码质量与安全扫描（并行Job 1/3）
-# 包含：密钥扫描、格式检查、安全扫描、依赖漏洞、死代码检测、脚本语法校验
+# CI Validate: 安全扫描（validate-security）
+# 包含：密钥扫描、bandit 安全扫描（仅告警）、pip-audit 依赖漏洞（仅告警）、CI 脚本语法校验
 set -eu
 
-echo "=== CI Validate: 代码质量与安全扫描 ==="
+echo "=== CI Validate: 安全扫描 ==="
 
 # --- 密钥检测 ---
 echo ""
-echo "=== [1/6] Secret detection (detect-secrets) ==="
+echo "=== [1/4] Secret detection (detect-secrets) ==="
 python3 -m pip install -q detect-secrets
 detect-secrets --version
 
@@ -56,23 +56,9 @@ for fpath, items in data.get('results', {}).items():
 fi
 echo "✅ Secret scan passed"
 
-# --- 代码质量检查（全量，PR 和 push 统一标准）---
-# 历史：PR 侧用增量检查以加速，但会导致 push 侧全量检查失败时 PR 侧感知不到
-# 现在统一全量检查，确保 CI 真正保护主分支（black/isort/ruff 全量仅多几十秒）
+# --- Bandit 安全扫描（仅告警）---
 echo ""
-echo "=== [2/6] Code quality checks (full scan) ==="
-SCAN_MODE="full"
-echo "Full scan mode"
-python3 -m compileall -q alembic apps packages tests scripts
-python3 -m black --check --fast alembic apps packages tests scripts
-python3 -m isort --check-only alembic apps packages tests scripts
-python3 -m ruff check apps packages tests --statistics
-
-echo "✅ Code quality checks passed"
-
-# --- Bandit 安全扫描（仅告警） ---
-echo ""
-echo "=== [3/6] Security scan (bandit, advisory only) ==="
+echo "=== [2/4] Security scan (bandit, advisory only) ==="
 set +e
 bandit -r apps packages -q -ll
 BANDIT_EXIT=$?
@@ -83,9 +69,9 @@ else
   echo "✅ Bandit security scan passed"
 fi
 
-# --- Pip-audit 依赖漏洞扫描（仅告警） ---
+# --- Pip-audit 依赖漏洞扫描（仅告警）---
 echo ""
-echo "=== [4/6] Python dependency vulnerability scan (pip-audit, advisory only) ==="
+echo "=== [3/4] Python dependency vulnerability scan (pip-audit, advisory only) ==="
 python3 -m pip install -q pip-audit
 pip-audit --version
 EXIT_CODE=0
@@ -98,27 +84,9 @@ for req_file in requirements.txt requirements-base.txt requirements-dev.txt; do
 done
 echo "pip-audit scan completed (advisory mode - warnings only, not blocking CI)"
 
-# --- Vulture 死代码检测（仅告警） ---
-echo ""
-echo "=== [5/6] Dead code detection (vulture, advisory only) ==="
-set +e
-python3 -m pip install -q vulture
-vulture --version
-echo "告警模式，不阻断CI。置信度>=90%建议尽快确认。"
-echo ""
-vulture apps packages scripts \
-  --exclude "tests,test,migrations,.gitea,docs,node_modules,site-packages,*/test_*.py,*/conftest.py" \
-  --min-confidence 70 \
-  2>&1 | sort -t'(' -k2 -rn | head -80
-echo ""
-echo "=== vulture scan summary ==="
-echo "发现潜在死代码（可能包含框架装饰器注册的函数，为误报）"
-echo "建议：定期人工审查高置信度（>=90%）条目"
-set -e
-
 # --- CI脚本语法校验 ---
 echo ""
-echo "=== [6/6] CI & shell scripts syntax validation ==="
+echo "=== [4/4] CI & shell scripts syntax validation ==="
 SYNTAX_ERROR=0
 # 检查所有 CI shell 脚本
 for script in scripts/ci/*.sh; do
@@ -154,4 +122,4 @@ fi
 echo "✅ All CI scripts syntax OK"
 
 echo ""
-echo "=== CI Validate: 代码质量与安全扫描 全部通过 ✅ ==="
+echo "=== CI Validate: 安全扫描 全部通过 ✅ ==="
diff --git a/scripts/ci/validate_style.sh b/scripts/ci/validate_style.sh
new file mode 100755
index 000000000..c87ec7f3c
--- /dev/null
+++ b/scripts/ci/validate_style.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+# CI Validate: 代码风格检查（validate-style）
+# 包含：Python 字节码编译、black 格式、isort 排序、ruff lint、vulture 死代码（仅告警）
+set -eu
+
+echo "=== CI Validate: 代码风格检查 ==="
+
+# --- Python 字节码编译 ---
+echo ""
+echo "=== [1/3] Python bytecode compilation ==="
+python3 -m compileall -q alembic apps packages tests scripts
+echo "✅ Bytecode compilation passed"
+
+# --- 代码格式检查（全量）---
+echo ""
+echo "=== [2/3] Code formatting (black + isort + ruff) ==="
+echo "Full scan mode"
+python3 -m black --check --fast alembic apps packages tests scripts
+python3 -m isort --check-only alembic apps packages tests scripts
+python3 -m ruff check apps packages tests --statistics
+echo "✅ Code formatting checks passed"
+
+# --- Vulture 死代码检测（仅告警）---
+echo ""
+echo "=== [3/3] Dead code detection (vulture, advisory only) ==="
+set +e
+python3 -m pip install -q vulture
+vulture --version
+echo "告警模式，不阻断CI。置信度>=90%建议尽快确认。"
+echo ""
+vulture apps packages scripts \
+  --exclude "tests,test,migrations,.gitea,docs,node_modules,site-packages,*/test_*.py,*/conftest.py" \
+  --min-confidence 70 \
+  2>&1 | sort -t'(' -k2 -rn | head -80
+echo ""
+echo "=== vulture scan summary ==="
+echo "发现潜在死代码（可能包含框架装饰器注册的函数，为误报）"
+echo "建议：定期人工审查高置信度（>=90%）条目"
+set -e
+
+echo ""
+echo "=== CI Validate: 代码风格检查 全部通过 ✅ ==="