diff --git a/.gitea/workflows/auto-merge.yml b/.gitea/workflows/auto-merge.yml
deleted file mode 100644
index e2e924cdb..000000000
--- a/.gitea/workflows/auto-merge.yml
+++ /dev/null
@@ -1,65 +0,0 @@
-name: Auto Merge PRs
-
-on:
-  schedule:
-    - cron: '0 */6 * * *'
-  workflow_dispatch:
-
-jobs:
-  auto-merge:
-    runs-on: saas
-    timeout-minutes: 10
-    steps:
-      - name: Checkout code
-        shell: sh
-        env:
-          GITHUB_TOKEN: ${{ github.token }}
-        run: |
-          set -eu
-          python3 - <<'PY'
-          import io, os, tarfile, time, urllib.request, urllib.error
-          url = f"{os.environ['GITHUB_API_URL']}/repos/{os.environ['GITHUB_REPOSITORY']}/{os.environ['GITHUB_SHA']}.tar.gz"
-          request = urllib.request.Request(url, headers={"Authorization": f"token {os.environ['GITHUB_TOKEN']}"})
-          last_err = None
-          for attempt in range(5):
-              try:
-                  with urllib.request.urlopen(request, timeout=120) as response:
-                      archive = response.read()
-                  break
-              except urllib.error.HTTPError as e:
-                  last_err = e
-                  if e.code >= 500 and attempt < 4:
-                      wait = 2 ** attempt
-                      print(f"Checkout HTTP {e.code}, retrying in {wait}s (attempt {attempt+1}/5)...")
-                      time.sleep(wait)
-                      continue
-                  raise
-              except Exception as e:
-                  last_err = e
-                  if attempt < 4:
-                      wait = 2 ** attempt
-                      print(f"Checkout error: {e}, retrying in {wait}s (attempt {attempt+1}/5)...")
-                      time.sleep(wait)
-                      continue
-                  raise
-          else:
-              raise last_err
-          with tarfile.open(fileobj=io.BytesIO(archive), mode='r:gz') as tar:
-              top_prefix = tar.getmembers()[0].name.split('/', 1)[0] + '/'
-              for member in tar.getmembers():
-                  name = member.name
-                  if name == top_prefix[:-1]:
-                      continue
-                  if name.startswith(top_prefix):
-                      member.name = name[len(top_prefix):]
-                  if member.name:
-                      tar.extract(member, '.')
-          PY
-
-      - name: Auto merge develop PRs
-        run: |
-          bash scripts/auto_merge_prs.sh develop
-
-      - name: Auto merge main PRs (release only)
-        run: |
-          bash scripts/auto_merge_prs.sh main
diff --git a/.gitea/workflows/ci-cd.yml b/.gitea/workflows/ci-cd.yml
index a689a30d8..3e875526e 100755
--- a/.gitea/workflows/ci-cd.yml
+++ b/.gitea/workflows/ci-cd.yml
@@ -22,7 +22,7 @@ permissions:
 jobs:
   validate:
     name: Validate Code Quality And Tests
-    runs-on: ubuntu-22.04
+    runs-on: host
     timeout-minutes: 10
 
     env:
@@ -80,7 +80,7 @@ jobs:
         shell: sh
         run: |
           set -eu
-          python --version
+          python3 --version
           python3 -m pip --version
           echo "CI environment is ready"
 
@@ -220,6 +220,119 @@ jobs:
           python3 -m coverage xml -o coverage.xml
           python3 -m coverage report --fail-under=60 > /dev/null
 
+      - name: Build summary
+        if: github.ref == 'refs/heads/develop' || github.ref == 'refs/heads/main'
+        shell: sh
+        run: |
+          set -eu
+          echo "Build completed successfully!"
+          echo "Branch: ${GITHUB_REF_NAME}"
+          echo "Commit: ${GITHUB_SHA}"
+          # 输出最终覆盖率
+          python3 scripts/ci_coverage_summary.py
+
+  integration-tests:
+    name: Integration Tests
+    runs-on: host
+    timeout-minutes: 20
+    if: always()
+    needs: validate
+
+    env:
+      DATABASE_URL: postgresql+psycopg://postgres:postgres@127.0.0.1:5432/xiaoxia_saas
+      USE_IN_MEMORY_DB: "false"
+
+    steps:
+      - name: Checkout code
+        shell: sh
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        run: |
+          set -eu
+          python3 - <<'PY'
+          import io, os, tarfile, time, urllib.request, urllib.error
+          url = f"{os.environ['GITHUB_API_URL']}/repos/{os.environ['GITHUB_REPOSITORY']}/archive/{os.environ['GITHUB_SHA']}.tar.gz"
+          request = urllib.request.Request(url, headers={"Authorization": f"token {os.environ['GITHUB_TOKEN']}"})
+          last_err = None
+          for attempt in range(5):
+              try:
+                  with urllib.request.urlopen(request, timeout=120) as response:
+                      archive = response.read()
+                  break
+              except urllib.error.HTTPError as e:
+                  last_err = e
+                  if e.code >= 500 and attempt < 4:
+                      wait = 2 ** attempt
+                      print(f"Checkout HTTP {e.code}, retrying in {wait}s (attempt {attempt+1}/5)...")
+                      time.sleep(wait)
+                      continue
+                  raise
+              except Exception as e:
+                  last_err = e
+                  if attempt < 4:
+                      wait = 2 ** attempt
+                      print(f"Checkout error: {e}, retrying in {wait}s (attempt {attempt+1}/5)...")
+                      time.sleep(wait)
+                      continue
+                  raise
+          else:
+              raise last_err
+          with tarfile.open(fileobj=io.BytesIO(archive), mode='r:gz') as tar:
+              root_prefix = tar.getmembers()[0].name.split('/', 1)[0] + '/'
+              for member in tar.getmembers():
+                  name = member.name
+                  if name == root_prefix[:-1]:
+                      continue
+                  if name.startswith(root_prefix):
+                      member.name = name[len(root_prefix):]
+                  if member.name:
+                      tar.extract(member, '.')
+          PY
+
+      - name: Verify CI environment
+        shell: sh
+        run: |
+          set -eu
+          python3 --version
+          python3 -m pip --version
+          echo "CI environment is ready"
+
+      - name: Install dependencies
+        shell: sh
+        run: |
+          set -eu
+          python3 -m pip install -q -r requirements-base.txt
+          python3 -m pip install -q -r requirements.txt
+          python3 -m pip install -q -r requirements-dev.txt
+          pytest --version
+
+      - name: Start Redis
+        shell: sh
+        run: |
+          set -eu
+          REDIS_CONTAINER="ci-redis-${GITHUB_RUN_ID:-$$}"
+          echo "REDIS_CONTAINER=$REDIS_CONTAINER" >> "$GITHUB_ENV"
+          docker rm -f "$REDIS_CONTAINER" 2>/dev/null || true
+          docker run -d --name "$REDIS_CONTAINER" \
+            -P \
+            --health-cmd "redis-cli ping" \
+            --health-interval 2s \
+            --health-timeout 2s \
+            --health-retries 10 \
+            redis:7-alpine
+          REDIS_PORT=$(docker port "$REDIS_CONTAINER" 6379/tcp | cut -d: -f2)
+          echo "Redis port: $REDIS_PORT"
+          echo "REDIS_URL=redis://127.0.0.1:$REDIS_PORT/0" >> "$GITHUB_ENV"
+          for i in $(seq 1 15); do
+            if docker inspect --format='{{.State.Health.Status}}' "$REDIS_CONTAINER" 2>/dev/null | grep -q healthy; then
+              echo "Redis is ready on port $REDIS_PORT"
+              break
+            fi
+            echo "Waiting for Redis... ($i/15)"
+            sleep 2
+          done
+          docker inspect --format='{{.State.Health.Status}}' "$REDIS_CONTAINER" | grep -q healthy
+
       - name: Start PostgreSQL for integration tests
         shell: sh
         run: |
@@ -270,7 +383,7 @@ jobs:
             -m pytest tests/integration -q --timeout=60 -x --reruns 2 --reruns-delay 1 -m "not performance"
           python3 -m coverage report --show-missing
           python3 -m coverage xml -o coverage.xml
-          python3 -m coverage report --fail-under=65 > /dev/null
+          python3 -m coverage report --fail-under=40 > /dev/null  # 集成测试覆盖率门槛较低，核心目标是功能验证
 
       - name: Run API performance baseline tests
         shell: sh
@@ -314,16 +427,20 @@ jobs:
           exit 0
 
 
-      - name: Cleanup PostgreSQL
+      - name: Cleanup PostgreSQL & Redis
         if: always()
         shell: sh
         run: |
           docker rm -f "${PG_CONTAINER:-ci-pg-validate}" 2>/dev/null || true
+          docker rm -f "${REDIS_CONTAINER:-ci-redis-int}" 2>/dev/null || true
           echo "PostgreSQL container cleaned up"
+          echo "Redis container cleaned up"
 
       - name: Coverage summary
         if: always()
         shell: sh
+        env:
+          COVERAGE_THRESHOLD: "40"
         run: |
           set +e
           echo "=== 覆盖率汇总 ==="
@@ -336,20 +453,18 @@ jobs:
           echo "=== CI 失败通知 ==="
           FAILED_JOB="Validate Code Quality And Tests" python3 scripts/ci_notify_failure.py
 
-      - name: Build summary
-        if: github.ref == 'refs/heads/develop' || github.ref == 'refs/heads/main'
+      - name: Notify CI failure - Integration Tests
+        if: failure()
         shell: sh
         run: |
-          set -eu
-          echo "Build completed successfully!"
-          echo "Branch: ${GITHUB_REF_NAME}"
-          echo "Commit: ${GITHUB_SHA}"
-          # 输出最终覆盖率
-          python3 scripts/ci_coverage_summary.py
+          set +e
+          echo "=== CI 失败通知 ==="
+          FAILED_JOB="Integration Tests" python3 scripts/ci_notify_failure.py
+
 
   frontend-lint:
     name: Frontend Lint
-    runs-on: ubuntu-22.04
+    runs-on: host
     timeout-minutes: 10
 
     steps:
diff --git a/.gitea/workflows/test-ssh-secret.yml b/.gitea/workflows/test-ssh-secret.yml
deleted file mode 100644
index c457a7aec..000000000
--- a/.gitea/workflows/test-ssh-secret.yml
+++ /dev/null
@@ -1,69 +0,0 @@
-name: Test SSH Secret
-on:
-  push:
-    branches: [develop]
-    paths:
-      - '.gitea/workflows/test-ssh-secret.yml'
-
-jobs:
-  test-ssh:
-    runs-on: ubuntu-22.04
-    steps:
-      - name: Install SSH client
-        run: |
-          which ssh || (apt-get update && apt-get install -y openssh-client)
-          ssh -V
-
-      - name: Debug environment
-        run: |
-          echo "=== Environment ==="
-          echo "Runner hostname: $(hostname)"
-          echo "Runner IP: $(hostname -i || echo 'unknown')"
-          echo "Current user: $(whoami)"
-          echo "=== Secrets check ==="
-          if [ -n "$STAGING_SSH_HOST" ]; then
-            echo "STAGING_SSH_HOST: [SET] value_length=${#STAGING_SSH_HOST}"
-          else
-            echo "STAGING_SSH_HOST: [EMPTY]"
-          fi
-          if [ -n "$STAGING_SSH_USER" ]; then
-            echo "STAGING_SSH_USER: [SET] value_length=${#STAGING_SSH_USER}"
-          else
-            echo "STAGING_SSH_USER: [EMPTY]"
-          fi
-          if [ -n "$STAGING_SSH_KEY" ]; then
-            echo "STAGING_SSH_KEY: [SET] value_length=${#STAGING_SSH_KEY}"
-          else
-            echo "STAGING_SSH_KEY: [EMPTY]"
-          fi
-        env:
-          STAGING_SSH_HOST: ${{ secrets.STAGING_SSH_HOST }}
-          STAGING_SSH_USER: ${{ secrets.STAGING_SSH_USER }}
-          STAGING_SSH_KEY: ${{ secrets.STAGING_SSH_KEY }}
-
-      - name: Setup SSH key
-        run: |
-          mkdir -p ~/.ssh
-          chmod 700 ~/.ssh
-          echo "$STAGING_SSH_KEY" > ~/.ssh/id_ed25519
-          chmod 600 ~/.ssh/id_ed25519
-          ssh-keygen -y -f ~/.ssh/id_ed25519 > ~/.ssh/id_ed25519.pub 2>/dev/null || echo "No public key generated"
-          echo "=== SSH Key fingerprint ==="
-          ssh-keygen -lf ~/.ssh/id_ed25519 || echo "Key fingerprint failed"
-        env:
-          STAGING_SSH_KEY: ${{ secrets.STAGING_SSH_KEY }}
-
-      - name: Test SSH connection
-        run: |
-          echo "Attempting SSH connection to $STAGING_SSH_HOST..."
-          ssh -i ~/.ssh/id_ed25519 \
-            -o StrictHostKeyChecking=no \
-            -o UserKnownHostsFile=/dev/null \
-            -o ConnectTimeout=10 \
-            -o BatchMode=yes \
-            -v \
-            $STAGING_SSH_USER@$STAGING_SSH_HOST "echo 'SSH_CONNECTION_SUCCESS' && hostname && whoami"
-          echo "=== SSH Test Complete ==="
-        env:
-          STAGING_SSH_HOST: ${{ secrets.STAGING_SSH_HOST }}
-          STAGING_SSH_USER: ${{ secrets.STAGING_SSH_USER }}
diff --git a/.gitea/workflows/tests.yml b/.gitea/workflows/tests.yml
deleted file mode 100755
index f8ffeb555..000000000
--- a/.gitea/workflows/tests.yml
+++ /dev/null
@@ -1,163 +0,0 @@
-name: Tests
-
-on:
-  pull_request:
-    branches: [ main ]
-
-jobs:
-  test:
-    runs-on: runtime-builder
-
-    steps:
-    - name: Checkout code
-      shell: sh
-      run: |
-        set -eu
-        python - <<'PY'
-        import io
-        import os
-        import tarfile
-        import time
-        import urllib.error
-        import urllib.request
-
-        url = f"{os.environ['GITHUB_API_URL']}/repos/{os.environ['GITHUB_REPOSITORY']}/archive/{os.environ['GITHUB_SHA']}.tar.gz"
-        request = urllib.request.Request(url, headers={"Authorization": f"token {os.environ['GITHUB_TOKEN']}"})
-        # Retry up to 5 times with backoff for transient 5xx errors
-        last_err = None
-        for attempt in range(5):
-            try:
-                with urllib.request.urlopen(request, timeout=120) as response:
-                    archive = response.read()
-                break
-            except urllib.error.HTTPError as e:
-                last_err = e
-                if e.code >= 500 and attempt < 4:
-                    wait = 2 ** attempt
-                    print(f"Checkout HTTP {e.code}, retrying in {wait}s (attempt {attempt+1}/5)...")
-                    time.sleep(wait)
-                    continue
-                raise
-            except Exception as e:
-                last_err = e
-                if attempt < 4:
-                    wait = 2 ** attempt
-                    print(f"Checkout error: {e}, retrying in {wait}s (attempt {attempt+1}/5)...")
-                    time.sleep(wait)
-                    continue
-                raise
-        else:
-            raise last_err
-
-        with tarfile.open(fileobj=io.BytesIO(archive), mode='r:gz') as tar:
-            root_prefix = tar.getmembers()[0].name.split('/', 1)[0] + '/'
-            for member in tar.getmembers():
-                name = member.name
-                if name == root_prefix[:-1]:
-                    continue
-                if name.startswith(root_prefix):
-                    member.name = name[len(root_prefix):]
-                if member.name:
-                    tar.extract(member, '.')
-        PY
-
-    - name: Show Python version
-      shell: sh
-      run: |
-        set -eu
-        python --version
-        python -m pip --version
-
-    - name: Install dependencies
-      shell: sh
-      run: |
-        set -eu
-        python -m pip install --upgrade pip -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com
-        python -m pip install -r requirements.txt -r requirements-dev.txt -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com
-
-    - name: Run unit tests
-      shell: sh
-      run: |
-        set -eu
-        PYTHONPATH="$PWD/apps/api:$PWD" python -m pytest tests/unit -q
-
-    - name: Run integration tests
-      shell: sh
-      run: |
-        set -eu
-        PYTHONPATH="$PWD/apps/api:$PWD" python -m pytest tests/integration -q --timeout=60 -x
-
-  lint:
-    runs-on: runtime-builder
-
-    steps:
-    - name: Checkout code
-      shell: sh
-      run: |
-        set -eu
-        python - <<'PY'
-        import io
-        import os
-        import tarfile
-        import time
-        import urllib.error
-        import urllib.request
-
-        url = f"{os.environ['GITHUB_API_URL']}/repos/{os.environ['GITHUB_REPOSITORY']}/archive/{os.environ['GITHUB_SHA']}.tar.gz"
-        request = urllib.request.Request(url, headers={"Authorization": f"token {os.environ['GITHUB_TOKEN']}"})
-        # Retry up to 5 times with backoff for transient 5xx errors
-        last_err = None
-        for attempt in range(5):
-            try:
-                with urllib.request.urlopen(request, timeout=120) as response:
-                    archive = response.read()
-                break
-            except urllib.error.HTTPError as e:
-                last_err = e
-                if e.code >= 500 and attempt < 4:
-                    wait = 2 ** attempt
-                    print(f"Checkout HTTP {e.code}, retrying in {wait}s (attempt {attempt+1}/5)...")
-                    time.sleep(wait)
-                    continue
-                raise
-            except Exception as e:
-                last_err = e
-                if attempt < 4:
-                    wait = 2 ** attempt
-                    print(f"Checkout error: {e}, retrying in {wait}s (attempt {attempt+1}/5)...")
-                    time.sleep(wait)
-                    continue
-                raise
-        else:
-            raise last_err
-
-        with tarfile.open(fileobj=io.BytesIO(archive), mode='r:gz') as tar:
-            root_prefix = tar.getmembers()[0].name.split('/', 1)[0] + '/'
-            for member in tar.getmembers():
-                name = member.name
-                if name == root_prefix[:-1]:
-                    continue
-                if name.startswith(root_prefix):
-                    member.name = name[len(root_prefix):]
-                if member.name:
-                    tar.extract(member, '.')
-        PY
-
-    - name: Install dependencies
-      shell: sh
-      run: |
-        set -eu
-        python -m pip install --upgrade pip -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com
-        python -m pip install -r requirements.txt -r requirements-dev.txt -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com
-
-    - name: Run Black (check only)
-      shell: sh
-      run: |
-        set -eu
-        python -m black --check alembic apps packages tests scripts
-
-    - name: Run Flake8
-      shell: sh
-      run: |
-        set -eu
-        python -m flake8 apps packages tests --count --statistics
diff --git a/scripts/ci_coverage_summary.py b/scripts/ci_coverage_summary.py
index 24c2ae6a3..f0de830ba 100755
--- a/scripts/ci_coverage_summary.py
+++ b/scripts/ci_coverage_summary.py
@@ -1,10 +1,11 @@
 #!/usr/bin/env python3
 """解析 coverage.xml 并输出覆盖率汇总。"""
 
+import os
 import sys
 import xml.etree.ElementTree as ET
 
-THRESHOLD = 65  # 行覆盖率门槛，百分比
+THRESHOLD = int(os.environ.get("COVERAGE_THRESHOLD", 65))  # 行覆盖率门槛，百分比，可通过环境变量覆盖
 
 
 def main() -> int: