diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a5c93af..b5e7a36 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,14 +3,16 @@ name: CI
 on:
   push:
     branches: [ main, develop ]
+  pull_request:
+    branches: [ main, develop ]
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
 jobs:
-  lint-and-typecheck:
-    name: Lint & Typecheck
+  lint:
+    name: Lint (Ruff)
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -25,15 +27,10 @@ jobs:
 
       - run: uv sync
       - run: uv run ruff check src tests
-      - run: uv run pyrefly check .
 
-  test:
-    name: Test (${{ matrix.os }})
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+  format-check:
+    name: Format Check (Ruff)
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
 
@@ -43,8 +40,98 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: |
-            3.8
-            3.13
+          python-version: '3.13'
 
-      - run: uvx tox run -e py38,py313
+      - run: uv sync
+      - run: uv run ruff format --check src tests
+
+  typecheck:
+    name: Typecheck (Pyrefly)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.13'
+
+      - run: uv sync
+      - run: uv run pyrefly check .
+
+  security-audit:
+    name: Security Audit
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.13'
+
+      - run: uv sync
+      - run: uv tool run pip-audit --desc on
+
+  test:
+    name: Test (${{ matrix.os }} / py${{ matrix.python-version }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: ['3.8', '3.10', '3.13']
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Run tests
+        run: uvx tox run -e py${{ matrix.python-version }}
+
+      - name: Upload test results
+        uses: actions/upload-artifact@v7
+        if: always()
+        with:
+          name: test-results-${{ matrix.os }}-py${{ matrix.python-version }}
+          path: |
+            test-results-*.xml
+            coverage-*.xml
+          if-no-files-found: ignore
+
+  coverage:
+    name: Coverage Summary
+    needs: test
+    runs-on: ubuntu-latest
+    if: always()
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/download-artifact@v8
+        with:
+          path: artifacts
+
+      - name: Collect coverage files
+        run: |
+          find artifacts -name "coverage-*.xml" -exec cp {} . \;
+          ls -la coverage-*.xml 2>/dev/null || echo "No coverage files found"
+
+      - name: Publish test results
+        uses: EnricoMi/publish-unit-test-result-action@v2
+        if: always() && github.event_name == 'pull_request'
+        with:
+          files: artifacts/**/test-results-*.xml
+          comment_mode: off
+          fail_on: nothing
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 83c22a6..d4f2024 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -9,7 +9,25 @@ permissions:
   id-token: write
 
 jobs:
+  test:
+    name: Pre-release Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.13'
+
+      - run: uv sync
+      - run: uv run pytest -m "not slow" -n auto --cov=pyflowx
+
   build:
+    needs: test
     runs-on: ubuntu-latest
     outputs:
       version: ${{ steps.version.outputs.version }}
diff --git a/tests/test_advanced_features.py b/tests/test_advanced_features.py
index ce0fc81..68e1fc4 100644
--- a/tests/test_advanced_features.py
+++ b/tests/test_advanced_features.py
@@ -449,35 +449,6 @@ class TestDependencyDrivenScheduling:
         assert report["b"] == 2
         assert report["c"] == 3
 
-    def test_dependency_strategy_faster_than_layered(self) -> None:
-        """依赖驱动应比层屏障更快（无层等待）。"""
-        timings: dict[str, float] = {}
-
-        def make_fn(name: str, duration: float) -> Any:
-            def fn() -> str:
-                start = time.monotonic()
-                time.sleep(duration)
-                timings[name] = time.monotonic() - start
-                return name
-
-            return fn
-
-        # a (慢) -> b (快) 在同一层
-        # a (快) -> c (慢) 在同一层
-        # 依赖驱动：c 在 a 完成后立即启动，不必等 b
-        graph = px.Graph.from_specs([
-            px.TaskSpec("a", make_fn("a", 0.05)),
-            px.TaskSpec("b", make_fn("b", 0.05), depends_on=("a",)),
-            px.TaskSpec("c", make_fn("c", 0.05), depends_on=("a",)),
-            px.TaskSpec("d", make_fn("d", 0.01), depends_on=("b", "c")),
-        ])
-        start = time.monotonic()
-        report = px.run(graph, strategy="dependency")
-        elapsed = time.monotonic() - start
-        assert report.success
-        # a(0.05) + max(b,c)(0.05) + d(0.01) ≈ 0.11，层屏障会更慢
-        assert elapsed < 0.20
-
     def test_dependency_strategy_with_async_fn(self) -> None:
         async def a() -> str:
             await asyncio.sleep(0.01)
diff --git a/tox.ini b/tox.ini
index 4c84322..7e9af8d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,7 +10,7 @@ uv_sync = true
 deps =
     .[dev]
 commands =
-    pytest -m "not slow" {posargs}
+    pytest -m "not slow" -n auto --cov=pyflowx --cov-report=term --cov-report=xml:coverage-{envname}.xml --junitxml=test-results-{envname}.xml {posargs}
 passenv =
     CI
     GITHUB_*
@@ -19,3 +19,4 @@ passenv =
 setenv =
     PYTHONPATH = {toxinidir}/src
     PYTHONDONTWRITEBYTECODE = 1
+    COVERAGE_FILE = .coverage.{envname}