Merge remote-tracking branch 'origin/main' into develop

将原有的lint、typecheck和测试工作流合并为单个CI任务，重构release工作流以支持Gitea发布，简化pypi发布步骤

.github/workflows/ci.yml

@@ -9,34 +9,12 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  lint-and-typecheck:
+  ci:
-    name: Lint & Typecheck
+    name: Lint, Typecheck & 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 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]
-    steps:
-      - uses: actions/checkout@v4
-
       - uses: astral-sh/setup-uv@v5
         with:
           enable-cache: true
@@ -47,4 +25,7 @@ jobs:
             3.8
             3.13
 
+      - run: uv sync
+      - run: uv run ruff check src tests
+      - run: uv run pyrefly check .
       - run: uvx tox run -e py38,py313

.github/workflows/release.yml

@@ -6,13 +6,11 @@ on:
 
 permissions:
   contents: write
-  id-token: write
 
 jobs:
-  build:
+  release:
+    name: Build, Publish & Release
     runs-on: ubuntu-latest
-    outputs:
-      version: ${{ steps.version.outputs.version }}
     steps:
       - uses: actions/checkout@v4
 
@@ -26,36 +24,24 @@ jobs:
 
       - run: uv build
 
-      - id: version
-        run: echo "version=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
-
-      - uses: actions/upload-artifact@v7
-        with:
-          name: dist
-          path: dist/
-
-  publish-pypi:
-    needs: build
-    runs-on: ubuntu-latest
-    environment: pypi
-    steps:
-      - uses: actions/download-artifact@v8
-        with:
-          name: dist
-          path: dist
-
       - uses: pypa/gh-action-pypi-publish@release/v1
-
-  release:
-    needs: [build, publish-pypi]
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/download-artifact@v8
         with:
-          name: dist
+          password: ${{ secrets.PYPI_API_TOKEN }}
-          path: dist
 
-      - uses: softprops/action-gh-release@v2
+      - name: Create Gitea Release
-        with:
+        run: |
-          files: dist/*
+          VERSION=${GITHUB_REF#refs/tags/v}
-          generate_release_notes: true
+          REPO=${GITHUB_REPOSITORY}
+          UPLOAD_URL=$(curl -s -X POST "https://git.gookeryoung.cn/api/v1/repos/${REPO}/releases" \
+            -H "Authorization: token ${{ secrets.GITEA_TOKEN }}" \
+            -H "Content-Type: application/json" \
+            -d "{\"tag_name\": \"v${VERSION}\", \"name\": \"v${VERSION}\", \"draft\": false, \"prerelease\": false}" \
+            | jq -r '.upload_url')
+          for file in dist/*; do
+            curl -s -X POST "${UPLOAD_URL}?name=$(basename $file)" \
+              -H "Authorization: token ${{ secrets.GITEA_TOKEN }}" \
+              -H "Content-Type: application/octet-stream" \
+              --data-binary @"$file"
+          done
+        env:
+          GITEA_URL: ${{ secrets.GITEA_URL || 'https://git.gookeryoung.cn' }}

.gitignore

@@ -10,3 +10,4 @@ wheels/
 .venv
 .coverage
 .idea
+*_profile.html

pyproject.toml

@@ -21,7 +21,7 @@ license = { text = "MIT" }
 name = "pyflowx"
 readme = "README.md"
 requires-python = ">=3.8"
-version = "0.2.12"
+version = "0.3.0"
 
 [project.scripts]
 autofmt     = "pyflowx.cli.autofmt:main"
@@ -38,6 +38,7 @@ packtool    = "pyflowx.cli.packtool:main"
 pdftool     = "pyflowx.cli.pdftool:main"
 piptool     = "pyflowx.cli.piptool:main"
 pymake      = "pyflowx.cli.pymake:main"
+pxp         = "pyflowx.cli.profiler:main"
 reseticon   = "pyflowx.cli.reseticoncache:main"
 scrcap      = "pyflowx.cli.screenshot:main"
 sglang      = "pyflowx.cli.llm.sglang:main"

src/pyflowx/__init__.py

@@ -82,6 +82,7 @@ from .errors import (
 )
 from .executors import Strategy, run
 from .graph import Graph, GraphDefaults
+from .profiling import ProfileReport, TaskProfile
 from .report import RunReport
 from .runner import CliExitCode, CliRunner
 from .storage import JSONBackend, MemoryBackend, StateBackend
@@ -99,7 +100,7 @@ from .task import (
     task_template,
 )
 
-__version__ = "0.3.6"
+__version__ = "0.4.0"
 
 __all__ = [
     "IS_LINUX",
@@ -122,6 +123,7 @@ __all__ = [
     "JSONBackend",
     "MemoryBackend",
     "MissingDependencyError",
+    "ProfileReport",
     "PyFlowXError",
     "RetryPolicy",
     "RunReport",
@@ -132,6 +134,7 @@ __all__ = [
     "TaskEvent",
     "TaskFailedError",
     "TaskHooks",
+    "TaskProfile",
     "TaskResult",
     "TaskSpec",
     "TaskStatus",

src/pyflowx/cli/dev/envdev.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import argparse
+import getpass
 from pathlib import Path
 from typing import Literal, get_args
 
@@ -254,6 +255,31 @@ def main() -> None:
             allow_upstream_skip=True,
             verbose=True,
         ),
+        # 安装 Docker
+        px.TaskSpec(
+            "install_docker",
+            cmd=["sudo", "apt", "install", "-y", "docker-compose-v2"],
+            conditions=(BuiltinConditions.IS_LINUX(),),
+            depends_on=("install_mirror",),
+            allow_upstream_skip=True,
+            verbose=True,
+        ),
+        px.TaskSpec(
+            "add_docker_group",
+            cmd=["sudo", "usermod", "-aG", "docker", getpass.getuser()],
+            conditions=(BuiltinConditions.IS_LINUX(),),
+            depends_on=("install_docker",),
+            allow_upstream_skip=True,
+            verbose=True,
+        ),
+        px.TaskSpec(
+            "refresh_docker_group",
+            cmd=["newgrp", "docker"],
+            conditions=(BuiltinConditions.IS_LINUX(),),
+            depends_on=("add_docker_group",),
+            allow_upstream_skip=True,
+            verbose=True,
+        ),
         # 设置 Python 环境变量
         *setenv_group({
             "PIP_INDEX_URL": PIP_INDEX_URLS[python_mirror],

src/pyflowx/cli/profiler.py

@@ -0,0 +1,272 @@
+"""pxp —— PyFlowX 性能分析器.
+
+分析包含 ``px`` 调用的 Python 脚本，生成工作流执行性能剖面报告。
+
+工作原理
+--------
+1. 注入 hook：monkey-patch ``pyflowx.run`` / ``pyflowx.executors.run`` /
+   ``pyflowx.runner.run``，捕获最后一次执行的 ``Graph`` 与 ``RunReport``。
+2. 执行目标脚本：用 ``runpy.run_path`` 以 ``__main__`` 身份执行，
+   捕获 ``SystemExit``（脚本可能调 ``sys.exit``）。
+3. 生成报告：从捕获的 report + graph 构建 :class:`ProfileReport`，
+   默认输出 HTML 并自动打开浏览器。
+
+使用方式
+--------
+    # 分析 pymake.py，生成 HTML 报告并打开浏览器
+    pxp pymake.py
+
+    # 传递参数给被分析脚本（用 -- 分隔）
+    pxp pymake.py -- t
+
+    # 指定输出文件
+    pxp pymake.py -o report.html
+
+    # 不打开浏览器
+    pxp pymake.py --no-browser
+
+    # 输出纯文本报告
+    pxp pymake.py -E text
+"""
+
+from __future__ import annotations
+
+__all__ = ["main"]
+
+import argparse
+import runpy
+import sys
+import webbrowser
+from pathlib import Path
+from typing import Any
+
+from .. import executors as _executors
+from .. import runner as _runner
+from ..profiling import ProfileReport
+from ..report import RunReport
+
+
+def _build_parser() -> argparse.ArgumentParser:
+    """构建参数解析器。"""
+    parser = argparse.ArgumentParser(
+        prog="pxp",
+        description="PyFlowX 性能分析器：分析包含 px 调用的脚本，生成性能剖面报告。",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog=(
+            "示例:\n"
+            "  pxp pymake.py              # 分析并打开 HTML 报告\n"
+            "  pxp pymake.py -- t         # 传递参数 t 给脚本\n"
+            "  pxp pymake.py -E text      # 输出纯文本报告\n"
+            "  pxp pymake.py -o out.html  # 指定输出文件\n"
+        ),
+    )
+    _ = parser.add_argument(
+        "--export",
+        "-E",
+        choices=["html", "text"],
+        default="html",
+        help="导出格式（默认: html）",
+    )
+    _ = parser.add_argument(
+        "--no-browser",
+        action="store_true",
+        help="不自动打开浏览器（仅 HTML 格式有效）",
+    )
+    _ = parser.add_argument(
+        "-o",
+        "--output",
+        help="输出文件路径（默认: <script>_profile.html）",
+    )
+    return parser
+
+
+def _capture_px_run() -> dict[str, Any]:
+    """注入 hook 捕获 px.run() 调用。
+
+    返回一个字典，``run()`` 执行后填充 ``graph`` 与 ``report``。
+    同时返回还原函数用于 finally 块。
+
+    Note
+    -----
+    需同时 patch 三处引用：
+    * ``pyflowx.executors.run`` —— 实际实现
+    * ``pyflowx.runner.run`` —— ``CliRunner`` 直接 import 的引用
+    * ``pyflowx.run`` —— 顶层包导出的引用（用户脚本常用 ``px.run()``）
+
+    另外 patch ``RunReport.__init__`` 以捕获 ``run()`` 内部创建的 report 实例。
+    这对于 ``run()`` 抛出 ``TaskFailedError`` 的场景至关重要：此时 ``run()``
+    不会正常返回 report，但 report 对象已在内部创建并填充了已执行任务的结果。
+    通过 ``capture_enabled`` 标志确保只在 ``patched_run`` 调用期间捕获。
+    """
+    captured: dict[str, Any] = {}
+    original_exec_run = _executors.run
+    original_runner_run = _runner.run
+    # 惰性获取顶层 pyflowx.run 引用（避免循环导入）
+    import pyflowx as px_mod
+
+    original_px_run = px_mod.run
+    original_report_init = RunReport.__init__
+    capture_enabled = [False]
+
+    def patched_report_init(self: RunReport, *args: Any, **kwargs: Any) -> None:
+        original_report_init(self, *args, **kwargs)
+        if capture_enabled[0]:
+            captured["report"] = self
+
+    RunReport.__init__ = patched_report_init  # type: ignore[assignment]
+
+    def patched_run(graph: Any, *args: Any, **kwargs: Any) -> RunReport:
+        captured["graph"] = graph
+        capture_enabled[0] = True
+        try:
+            report = original_exec_run(graph, *args, **kwargs)
+            # 正常返回时确保 captured["report"] 是返回的 report
+            captured["report"] = report
+            return report
+        finally:
+            capture_enabled[0] = False
+
+    # patch 所有引用 run 的入口
+    _executors.run = patched_run  # type: ignore[assignment]
+    _runner.run = patched_run  # type: ignore[assignment]
+    px_mod.run = patched_run  # type: ignore[assignment]
+
+    def _restore() -> None:
+        _executors.run = original_exec_run  # type: ignore[assignment]
+        _runner.run = original_runner_run  # type: ignore[assignment]
+        px_mod.run = original_px_run  # type: ignore[assignment]
+        RunReport.__init__ = original_report_init  # type: ignore[assignment]
+
+    captured["_restore"] = _restore
+    return captured
+
+
+def _run_target_script(script: Path, script_args: list[str]) -> dict[str, Any]:
+    """执行目标脚本。
+
+    将脚本所在目录加入 ``sys.path``，设置 ``sys.argv``，然后用
+    ``runpy.run_path`` 以 ``__main__`` 身份执行。捕获 ``SystemExit``。
+
+    Returns
+    -------
+    dict[str, Any]
+        脚本模块的全局变量字典（含 ``main`` 等定义）。
+    """
+    sys.argv = [str(script), *script_args]
+    script_dir = str(script.parent.resolve())
+    if script_dir not in sys.path:
+        sys.path.insert(0, script_dir)
+    return runpy.run_path(str(script), run_name="__main__")
+
+
+def _try_call_main(module_globals: dict[str, Any]) -> None:
+    """若模块定义了 ``main`` 可调用对象，调用它。
+
+    用于脚本无 ``if __name__ == "__main__"`` 块的场景（如通过 entry points
+    注册的 CLI 工具脚本）。``main`` 通常调用 ``CliRunner.run_cli()``，
+    后者读取 ``sys.argv[1:]`` 执行对应命令。
+    """
+    main_fn = module_globals.get("main")
+    if callable(main_fn):
+        main_fn()
+
+
+def _output_report(
+    profile: ProfileReport,
+    export: str,
+    output: str | None,
+    script_stem: str,
+    no_browser: bool,
+) -> None:
+    """输出性能报告。"""
+    if export == "text":
+        print(profile.describe())
+        return
+
+    # HTML 格式
+    html = profile.to_html()
+    if output:
+        out_path = Path(output)
+    else:
+        out_path = Path.cwd() / f"{script_stem}_profile.html"
+    out_path.write_text(html, encoding="utf-8")
+    print(f"HTML 报告已生成: {out_path}")
+
+    if not no_browser:
+        try:
+            webbrowser.open(f"file://{out_path.resolve()}")
+        except Exception as e:
+            print(f"警告：无法打开浏览器: {e}", file=sys.stderr)
+
+
+def main() -> None:
+    """pxp CLI 入口。"""
+    parser = _build_parser()
+    pxp_args, remaining = parser.parse_known_args()
+
+    if not remaining:
+        parser.print_help()
+        sys.exit(2)
+
+    script_str = remaining[0]
+    script_args = remaining[1:]
+    script_path = Path(script_str).resolve()
+
+    if not script_path.is_file():
+        print(f"错误：脚本不存在: {script_path}", file=sys.stderr)
+        sys.exit(2)
+
+    # 注入 hook
+    captured = _capture_px_run()
+
+    # 执行目标脚本
+    print(f"正在分析: {script_path}")
+    if script_args:
+        print(f"脚本参数: {script_args}")
+    print("-" * 60)
+
+    module_globals: dict[str, Any] = {}
+    try:
+        module_globals = _run_target_script(script_path, script_args)
+    except SystemExit:
+        # 脚本调用了 sys.exit，正常情况
+        pass
+    except Exception as e:
+        print(f"警告：脚本执行抛出异常: {e}", file=sys.stderr)
+
+    # 若脚本执行未捕获到 run()，尝试调用模块的 main() 函数
+    # （适用于无 ``if __name__ == "__main__"`` 块的 CLI 脚本）
+    if captured.get("report") is None and module_globals:
+        try:
+            _try_call_main(module_globals)
+        except SystemExit:
+            pass
+        except Exception as e:
+            print(f"警告：调用 main() 抛出异常: {e}", file=sys.stderr)
+
+    # 还原 hook
+    restore = captured.pop("_restore", None)
+    if restore is not None:
+        restore()
+
+    # 检查是否捕获到 run() 调用
+    report = captured.get("report")
+    graph = captured.get("graph")
+    if report is None or graph is None:
+        print("错误：未捕获到 px.run() 调用，无法生成性能报告", file=sys.stderr)
+        print("请确保脚本通过 px.run() 或 CliRunner 执行任务流图。", file=sys.stderr)
+        sys.exit(1)
+
+    # 生成报告
+    profile = ProfileReport.from_report(report, graph)
+    _output_report(
+        profile,
+        export=pxp_args.export,
+        output=pxp_args.output,
+        script_stem=script_path.stem,
+        no_browser=pxp_args.no_browser,
+    )
+
+
+if __name__ == "__main__":
+    main()

src/pyflowx/cli/pymake.py

@@ -6,39 +6,48 @@
 
 from __future__ import annotations
 
+from pathlib import Path
+
 import pyflowx as px
 from pyflowx.conditions import Constants
 
+# 项目根目录（pymake.py 在 src/pyflowx/cli，向上四层到达根目录）
+ROOT_DIR = Path(__file__).parent.parent.parent.parent
+
 MATURIN_BUILD_COMMAND = ["maturin", "build", "-r"]
 if Constants.IS_WINDOWS:
     MATURIN_BUILD_COMMAND.extend(["--target", "x86_64-win7-windows-msvc", "-Zbuild-std", "-i", "python3.8"])
 
 # 扁平注册所有任务（px.cmd 自动从命令前两段推导 name）
+# 所有任务指定 cwd=ROOT_DIR，确保在项目根目录执行
 tasks: list[px.TaskSpec] = [
-    px.cmd(["uv", "build"]),
+    px.cmd(["uv", "build"], cwd=ROOT_DIR),
-    px.cmd(MATURIN_BUILD_COMMAND),
+    px.cmd(MATURIN_BUILD_COMMAND, cwd=ROOT_DIR),
-    px.cmd(["uv", "sync"]),
+    px.cmd(["uv", "sync"], cwd=ROOT_DIR),
-    px.cmd(["gitt", "c"], name="git_clean"),
+    px.cmd(["gitt", "c"], name="git_clean", cwd=ROOT_DIR),
     px.cmd(
         ["pytest", "-m", "not slow", "-n", "8", "--dist", "loadfile", "--color=yes", "--durations=10"],
         name="test",
+        cwd=ROOT_DIR,
     ),
     px.cmd(
         ["pytest", "-m", "not slow", "--dist", "loadfile", "--color=yes", "--durations=10"],
         name="test_fast",
+        cwd=ROOT_DIR,
     ),
     px.cmd(
         ["pytest", "--cov", "-n", "8", "--dist", "loadfile", "--tb=short", "-v", "--color=yes", "--durations=10"],
         name="test_coverage",
+        cwd=ROOT_DIR,
     ),
-    px.cmd(["pyrefly", "check", "."]),
+    px.cmd(["pyrefly", "check", "."], cwd=ROOT_DIR),
-    px.cmd(["git", "add", "-A"], name="git_add_all"),
+    px.cmd(["git", "add", "-A"], name="git_add_all", cwd=ROOT_DIR),
-    px.cmd(["bumpversion"]),
+    px.cmd(["bumpversion"], cwd=ROOT_DIR),
-    px.cmd(["bumpversion", "minor"]),
+    px.cmd(["bumpversion", "minor"], cwd=ROOT_DIR),
-    px.cmd(["git", "push"]),
+    px.cmd(["git", "push"], cwd=ROOT_DIR),
-    px.cmd(["git", "push", "--tags"], name="git_push_tags"),
+    px.cmd(["git", "push", "--tags"], name="git_push_tags", cwd=ROOT_DIR),
-    px.cmd(["hatch", "publish"], name="publish_python"),
+    px.cmd(["hatch", "publish"], name="publish_python", cwd=ROOT_DIR),
-    px.cmd(["twine", "upload", "--disable-progress-bar"], name="twine_publish"),
+    px.cmd(["twine", "upload", "--disable-progress-bar"], name="twine_publish", cwd=ROOT_DIR),
 ]
 
 # 单任务别名（alias 名与任务名相同）：直接内联 TaskSpec，避免 str 自引用
@@ -55,13 +64,13 @@ aliases: dict[str, str | list[str | px.TaskSpec] | px.TaskSpec | px.Graph] = {
     "bump": ["c", "tc", "git_add_all", "bumpversion"],
     "bumpmi": "bumpversion_minor",
     "cov": ["git_clean", "test_coverage"],
-    "doc": px.cmd(["sphinx-build", "-b", "html", "docs", "docs/_build"], name="doc"),
+    "doc": px.cmd(["sphinx-build", "-b", "html", "docs", "docs/_build"], name="doc", cwd=ROOT_DIR),
-    "lint": px.cmd(["ruff", "check", "--fix", "--unsafe-fixes"], name="lint"),
+    "lint": px.cmd(["ruff", "check", "--fix", "--unsafe-fixes"], name="lint", cwd=ROOT_DIR),
     "pb": ["twine_publish", "publish_python"],
     "t": "test",
     "tf": "test_fast",
     "tc": ["pyrefly_check", "lint"],
-    "tox": px.cmd(["tox", "-p", "auto"], name="tox"),
+    "tox": px.cmd(["tox", "-p", "auto"], name="tox", cwd=ROOT_DIR),
     # 发布命令
     "p": ["git_clean", "git_push", "git_push_tags"],
 }

src/pyflowx/profiling.py

@@ -0,0 +1,705 @@
+"""工作流执行性能评估。
+
+基于 :class:`~pyflowx.report.RunReport` 中已有的 ``started_at`` /
+``finished_at`` 时间戳进行离线分析，**零运行时开销**——不修改执行流程，
+不注册回调，不引入额外计时器。
+
+核心指标
+--------
+* **任务级**：每个任务的 wall-clock 耗时、状态、重试次数、等待时间
+  （从最早依赖完成到本任务开始）。
+* **图级**：总耗时（wall-clock）、关键路径耗时（理论最短耗时）、
+  并行度效率（关键路径耗时 / 总耗时）。
+* **关键路径**：从源点到汇点的最长依赖路径，识别真正的串行瓶颈。
+* **并行度**：基于时间线重叠计算瞬时并行度，给出平均并行度与峰值并行度。
+* **瓶颈识别**：按耗时排序的 Top-N 任务。
+
+设计原则
+--------
+* 数据来源于 ``RunReport`` + ``Graph``，无副作用。
+* 计算复杂度 O(V+E)：拓扑排序 + 单次松弛，适合大规模图。
+* 所有时间戳用 ``datetime``，与 :class:`TaskResult` 保持一致。
+
+快速上手
+--------
+    import pyflowx as px
+
+    report = px.run(graph)
+    profile = px.ProfileReport.from_report(report, graph)
+    print(profile.describe())
+    bottlenecks = profile.top_bottlenecks(3)
+"""
+
+from __future__ import annotations
+
+__all__ = [
+    "ProfileReport",
+    "TaskProfile",
+]
+
+from dataclasses import dataclass
+from datetime import datetime
+from typing import Any
+
+from .graph import Graph
+from .report import RunReport
+from .task import TaskResult, TaskStatus
+
+
+@dataclass(frozen=True)
+class TaskProfile:
+    """单个任务的性能剖面。
+
+    属性
+    ----
+    name:
+        任务名。
+    status:
+        终态（SUCCESS/FAILED/SKIPPED）。
+    duration:
+        wall-clock 执行耗时（秒）。SKIPPED 任务为 0.0。
+    attempts:
+        尝试次数（含首次）。
+    wait_time:
+        从最早硬依赖完成到本任务开始的等待时间（秒）。
+        无硬依赖或 SKIPPED 时为 0.0。
+    is_on_critical_path:
+        是否位于关键路径上。
+    deps:
+        硬依赖任务名列表。
+    """
+
+    name: str
+    status: TaskStatus
+    duration: float
+    attempts: int
+    wait_time: float
+    is_on_critical_path: bool
+    deps: tuple[str, ...]
+
+    def to_dict(self) -> dict[str, Any]:
+        """转为 JSON 友好的字典。"""
+        return {
+            "name": self.name,
+            "status": self.status.value,
+            "duration_seconds": round(self.duration, 6),
+            "attempts": self.attempts,
+            "wait_time_seconds": round(self.wait_time, 6),
+            "is_on_critical_path": self.is_on_critical_path,
+            "deps": list(self.deps),
+        }
+
+
+@dataclass(frozen=True)
+class ProfileReport:
+    """工作流执行的性能剖面报告。
+
+    通过 :meth:`from_report` 从 :class:`RunReport` + :class:`Graph` 构建。
+    所有字段在构造时一次性计算完毕，后续访问为 O(1)。
+    """
+
+    tasks: tuple[TaskProfile, ...]
+    """所有任务的性能剖面（按拓扑序）。"""
+
+    total_duration: float
+    """整次运行的 wall-clock 耗时（秒）。"""
+
+    critical_path_duration: float
+    """关键路径耗时（秒）：从最早任务开始到最晚任务结束的最长依赖路径。"""
+
+    critical_path: tuple[str, ...]
+    """关键路径上的任务名序列（按执行顺序）。"""
+
+    avg_parallelism: float
+    """平均并行度 = 任务总耗时 / wall-clock 总耗时。"""
+
+    peak_parallelism: int
+    """峰值并行度：任一时刻同时运行的任务数最大值。"""
+
+    parallelism_efficiency: float
+    """并行度效率 = 关键路径耗时 / wall-clock 总耗时。``1.0`` 表示完全串行，
+    越大表示并行化收益越低（瓶颈在关键路径上）。"""
+
+    # ------------------------------------------------------------------ #
+    # 构建
+    # ------------------------------------------------------------------ #
+    @classmethod
+    def from_report(cls, report: RunReport, graph: Graph) -> ProfileReport:
+        """从运行报告与图构建性能剖面。
+
+        参数
+        ----
+        report:
+            已完成的 :class:`RunReport`，需包含 ``started_at``/``finished_at``。
+        graph:
+            对应的 :class:`Graph`，用于依赖关系与关键路径分析。
+
+        Note
+        -----
+        本方法不修改 ``report`` 或 ``graph``，纯函数式计算。
+        """
+        task_profiles = cls._build_task_profiles(report, graph)
+        total_duration = cls._calc_total_duration(report)
+        critical_path, critical_duration = cls._calc_critical_path(graph, report)
+        avg_par, peak_par = cls._calc_parallelism(report)
+        efficiency = critical_duration / total_duration if total_duration > 0 else 0.0
+
+        # 标记关键路径上的任务
+        critical_set = set(critical_path)
+        marked = tuple(
+            TaskProfile(
+                name=t.name,
+                status=t.status,
+                duration=t.duration,
+                attempts=t.attempts,
+                wait_time=t.wait_time,
+                is_on_critical_path=t.name in critical_set,
+                deps=t.deps,
+            )
+            for t in task_profiles
+        )
+
+        return cls(
+            tasks=marked,
+            total_duration=total_duration,
+            critical_path_duration=critical_duration,
+            critical_path=critical_path,
+            avg_parallelism=avg_par,
+            peak_parallelism=peak_par,
+            parallelism_efficiency=efficiency,
+        )
+
+    @staticmethod
+    def _build_task_profiles(report: RunReport, graph: Graph) -> tuple[TaskProfile, ...]:
+        """构建每个任务的性能剖面。"""
+        profiles: list[TaskProfile] = []
+        for name, result in report.results.items():
+            spec = graph.specs.get(name)
+            deps = tuple(spec.depends_on) if spec is not None else ()
+            duration = result.duration or 0.0
+            wait_time = ProfileReport._calc_wait_time(result, deps, report)
+            profiles.append(
+                TaskProfile(
+                    name=name,
+                    status=result.status,
+                    duration=duration,
+                    attempts=result.attempts,
+                    wait_time=wait_time,
+                    is_on_critical_path=False,  # 后续标记
+                    deps=deps,
+                )
+            )
+        return tuple(profiles)
+
+    @staticmethod
+    def _calc_wait_time(
+        result: TaskResult[Any],
+        deps: tuple[str, ...],
+        report: RunReport,
+    ) -> float:
+        """计算等待时间：从最早依赖完成到本任务开始。
+
+        无硬依赖、SKIPPED 任务或时间戳缺失时返回 0.0。
+        """
+        if not deps or result.started_at is None or result.status == TaskStatus.SKIPPED:
+            return 0.0
+        # 找出所有已完成依赖的最晚完成时间
+        dep_end_times: list[datetime] = []
+        for dep in deps:
+            dep_result = report.results.get(dep)
+            if dep_result is not None and dep_result.finished_at is not None:
+                dep_end_times.append(dep_result.finished_at)
+        if not dep_end_times:
+            return 0.0
+        latest_dep_end = max(dep_end_times)
+        delta = (result.started_at - latest_dep_end).total_seconds()
+        return max(0.0, delta)
+
+    @staticmethod
+    def _calc_total_duration(report: RunReport) -> float:
+        """计算 wall-clock 总耗时：最早开始到最晚结束。"""
+        starts: list[datetime] = []
+        ends: list[datetime] = []
+        for r in report.results.values():
+            if r.started_at is not None:
+                starts.append(r.started_at)
+            if r.finished_at is not None:
+                ends.append(r.finished_at)
+        if not starts or not ends:
+            return 0.0
+        return (max(ends) - min(starts)).total_seconds()
+
+    @staticmethod
+    def _calc_critical_path(graph: Graph, report: RunReport) -> tuple[tuple[str, ...], float]:
+        """计算关键路径：DAG 最长路径（按实际执行耗时）。
+
+        使用拓扑排序 + 动态规划，O(V+E)。SKIPPED 任务耗时按 0 计。
+        """
+        # 构建耗时映射
+        durations: dict[str, float] = {}
+        for name, result in report.results.items():
+            durations[name] = result.duration or 0.0
+
+        # 拓扑序（使用 graph.layers 保证与分层一致）
+        try:
+            layers = graph.layers()
+        except Exception:
+            # 图校验失败时回退为空
+            return (), 0.0
+
+        # earliest_finish[name] = duration[name] + max(earliest_finish[dep] for dep in deps)
+        earliest_finish: dict[str, float] = {}
+        predecessor: dict[str, str | None] = {}
+
+        for layer in layers:
+            for name in layer:
+                spec = graph.specs.get(name)
+                deps = spec.depends_on if spec is not None else ()
+                if not deps:
+                    earliest_finish[name] = durations.get(name, 0.0)
+                    predecessor[name] = None
+                else:
+                    best_dep: str | None = None
+                    best_ef = 0.0
+                    for dep in deps:
+                        ef = earliest_finish.get(dep, 0.0)
+                        if ef >= best_ef:
+                            best_ef = ef
+                            best_dep = dep
+                    earliest_finish[name] = best_ef + durations.get(name, 0.0)
+                    predecessor[name] = best_dep
+
+        if not earliest_finish:
+            return (), 0.0
+
+        # 找到 earliest_finish 最大的节点作为终点
+        end_node = max(earliest_finish, key=lambda n: earliest_finish[n])
+        total = earliest_finish[end_node]
+
+        # 回溯关键路径
+        path: list[str] = []
+        node: str | None = end_node
+        while node is not None:
+            path.append(node)
+            node = predecessor.get(node)
+        path.reverse()
+
+        return tuple(path), total
+
+    @staticmethod
+    def _calc_parallelism(report: RunReport) -> tuple[float, int]:
+        """计算平均并行度与峰值并行度。
+
+        基于时间线扫描：将每个任务的 [started_at, finished_at] 区间
+        转为事件点（+1/-1），排序后扫描得到瞬时并行度序列。
+
+        返回 (avg_parallelism, peak_parallelism)。
+        无有效时间戳时返回 (0.0, 0)。
+        """
+        events: list[tuple[float, int]] = []  # (timestamp, delta)
+        for r in report.results.values():
+            if r.started_at is None or r.finished_at is None:
+                continue
+            if r.status == TaskStatus.SKIPPED:
+                continue
+            start_ts = r.started_at.timestamp()
+            end_ts = r.finished_at.timestamp()
+            if end_ts <= start_ts:
+                continue
+            events.append((start_ts, 1))
+            events.append((end_ts, -1))
+
+        if not events:
+            return 0.0, 0
+
+        # 排序：同一时间点先处理结束（-1）再处理开始（+1），避免虚假峰值
+        events.sort(key=lambda e: (e[0], e[1]))
+
+        current = 0
+        peak = 0
+        # 加权面积用于计算平均并行度
+        area = 0.0
+        prev_ts = events[0][0]
+        for ts, delta in events:
+            if ts > prev_ts:
+                area += current * (ts - prev_ts)
+            current += delta
+            peak = max(peak, current)
+            prev_ts = ts
+
+        total_span = events[-1][0] - events[0][0]
+        avg = area / total_span if total_span > 0 else 0.0
+        return avg, peak
+
+    # ------------------------------------------------------------------ #
+    # 查询
+    # ------------------------------------------------------------------ #
+    def task(self, name: str) -> TaskProfile:
+        """返回指定任务的剖面。不存在则 ``KeyError``。"""
+        for t in self.tasks:
+            if t.name == name:
+                return t
+        raise KeyError(name)
+
+    def top_bottlenecks(self, n: int = 5) -> tuple[TaskProfile, ...]:
+        """返回耗时最长的 Top-N 任务（按 duration 降序）。
+
+        参数
+        ----
+        n:
+            返回数量。``n <= 0`` 返回空元组。
+        """
+        if n <= 0:
+            return ()
+        return tuple(sorted(self.tasks, key=lambda t: t.duration, reverse=True)[:n])
+
+    def critical_tasks(self) -> tuple[TaskProfile, ...]:
+        """返回关键路径上的所有任务（按路径顺序）。"""
+        critical_set = set(self.critical_path)
+        # 保持关键路径顺序
+        order = {name: i for i, name in enumerate(self.critical_path)}
+        return tuple(sorted((t for t in self.tasks if t.name in critical_set), key=lambda t: order[t.name]))
+
+    def failed_tasks(self) -> tuple[TaskProfile, ...]:
+        """返回 FAILED 状态的任务。"""
+        return tuple(t for t in self.tasks if t.status == TaskStatus.FAILED)
+
+    def skipped_tasks(self) -> tuple[TaskProfile, ...]:
+        """返回 SKIPPED 状态的任务。"""
+        return tuple(t for t in self.tasks if t.status == TaskStatus.SKIPPED)
+
+    # ------------------------------------------------------------------ #
+    # 输出
+    # ------------------------------------------------------------------ #
+    def to_dict(self) -> dict[str, Any]:
+        """转为 JSON 友好的字典。"""
+        return {
+            "tasks": [t.to_dict() for t in self.tasks],
+            "total_duration_seconds": round(self.total_duration, 6),
+            "critical_path_duration_seconds": round(self.critical_path_duration, 6),
+            "critical_path": list(self.critical_path),
+            "avg_parallelism": round(self.avg_parallelism, 4),
+            "peak_parallelism": self.peak_parallelism,
+            "parallelism_efficiency": round(self.parallelism_efficiency, 4),
+            "bottlenecks": [t.to_dict() for t in self.top_bottlenecks(5)],
+        }
+
+    def to_html(self) -> str:
+        """生成自包含的 HTML 报告（含 CSS，无外部依赖）。
+
+        报告含：图级指标卡片、关键路径、时间线甘特图、Top 瓶颈表格、
+        全部任务表格。适合直接用浏览器打开查看。
+        """
+        return _render_html(self)
+
+    def describe(self) -> str:
+        lines: list[str] = []
+        lines.append("=" * 70)
+        lines.append("PyFlowX 性能剖面报告")
+        lines.append("=" * 70)
+        lines.append("")
+        lines.append("【图级指标】")
+        lines.append(f"  总耗时 (wall-clock):     {self.total_duration:.3f}s")
+        lines.append(f"  关键路径耗时:            {self.critical_path_duration:.3f}s")
+        lines.append(f"  平均并行度:              {self.avg_parallelism:.2f}")
+        lines.append(f"  峰值并行度:              {self.peak_parallelism}")
+        lines.append(f"  并行度效率:              {self.parallelism_efficiency:.2%}")
+        lines.append(f"  任务总数:                {len(self.tasks)}")
+        lines.append("")
+
+        # 关键路径
+        lines.append("【关键路径】")
+        if self.critical_path:
+            lines.append(f"  {' -> '.join(self.critical_path)}")
+        else:
+            lines.append("  (无)")
+        lines.append("")
+
+        # Top 瓶颈
+        bottlenecks = self.top_bottlenecks(5)
+        lines.append(f"【Top {len(bottlenecks)} 瓶颈任务】")
+        if bottlenecks:
+            lines.append(f"  {'任务':<30} {'耗时':>10} {'等待':>10} {'尝试':>6} {'关键路径':>8} {'状态':>8}")
+            lines.append(f"  {'-' * 30} {'-' * 10} {'-' * 10} {'-' * 6} {'-' * 8} {'-' * 8}")
+            for t in bottlenecks:
+                critical_flag = "✓" if t.is_on_critical_path else ""
+                lines.append(
+                    f"  {t.name:<30} {t.duration:>9.3f}s {t.wait_time:>9.3f}s {t.attempts:>6} "
+                    f"{critical_flag:>8} {t.status.value:>8}",
+                )
+        else:
+            lines.append("  (无)")
+        lines.append("")
+
+        # 全部任务详情
+        lines.append("【全部任务】")
+        if self.tasks:
+            lines.append(f"  {'任务':<30} {'耗时':>10} {'等待':>10} {'尝试':>6} {'关键路径':>8} {'状态':>8}")
+            lines.append(f"  {'-' * 30} {'-' * 10} {'-' * 10} {'-' * 6} {'-' * 8} {'-' * 8}")
+            for t in self.tasks:
+                critical_flag = "✓" if t.is_on_critical_path else ""
+                lines.append(
+                    f"  {t.name:<30} {t.duration:>9.3f}s {t.wait_time:>9.3f}s {t.attempts:>6} "
+                    f"{critical_flag:>8} {t.status.value:>8}",
+                )
+        else:
+            lines.append("  (无)")
+        lines.append("")
+        lines.append("=" * 70)
+        return "\n".join(lines)
+
+    def __repr__(self) -> str:
+        return (
+            f"ProfileReport(tasks={len(self.tasks)}, "
+            f"total={self.total_duration:.3f}s, "
+            f"critical={self.critical_path_duration:.3f}s, "
+            f"avg_par={self.avg_parallelism:.2f}, "
+            f"peak_par={self.peak_parallelism})"
+        )
+
+
+# ---------------------------------------------------------------------- #
+# HTML 渲染（私有，零依赖）
+# ---------------------------------------------------------------------- #
+_HTML_TEMPLATE = """<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>PyFlowX 性能剖面报告</title>
+<style>
+  :root {{
+    --bg: #f5f5f7;
+    --card: #ffffff;
+    --border: #d2d2d7;
+    --text: #1d1d1f;
+    --muted: #6e6e73;
+    --accent: #0071e3;
+    --success: #34c759;
+    --warning: #ff9f0a;
+    --danger: #ff3b30;
+    --critical: #af52de;
+  }}
+  * {{ box-sizing: border-box; }}
+  body {{
+    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
+    margin: 0;
+    padding: 24px;
+    background: var(--bg);
+    color: var(--text);
+    line-height: 1.5;
+  }}
+  h1 {{ margin: 0 0 8px; font-size: 28px; }}
+  h2 {{ margin: 32px 0 12px; font-size: 20px; border-bottom: 1px solid var(--border); padding-bottom: 6px; }}
+  .subtitle {{ color: var(--muted); margin: 0 0 24px; font-size: 14px; }}
+  .cards {{ display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 8px; }}
+  .card {{
+    background: var(--card);
+    border: 1px solid var(--border);
+    border-radius: 10px;
+    padding: 16px;
+  }}
+  .card .label {{ font-size: 12px; color: var(--muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.5px; }}
+  .card .value {{ font-size: 22px; font-weight: 600; }}
+  .card .unit {{ font-size: 13px; color: var(--muted); margin-left: 2px; }}
+  .critical-path {{
+    background: var(--card);
+    border: 1px solid var(--border);
+    border-left: 4px solid var(--critical);
+    border-radius: 10px;
+    padding: 16px;
+    margin-bottom: 8px;
+  }}
+  .critical-path .label {{ font-size: 12px; color: var(--muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; }}
+  .critical-path .chain {{ font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 13px; word-break: break-all; }}
+  .critical-path .arrow {{ color: var(--critical); margin: 0 6px; font-weight: 600; }}
+  /* 甘特图 */
+  .gantt {{
+    background: var(--card);
+    border: 1px solid var(--border);
+    border-radius: 10px;
+    padding: 16px;
+    overflow-x: auto;
+  }}
+  .gantt-row {{ display: flex; align-items: center; margin-bottom: 6px; min-width: 600px; }}
+  .gantt-label {{ width: 200px; flex-shrink: 0; font-size: 13px; font-family: ui-monospace, monospace; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }}
+  .gantt-track {{ flex: 1; height: 22px; background: #f0f0f3; border-radius: 4px; position: relative; }}
+  .gantt-bar {{ position: absolute; height: 100%; border-radius: 4px; min-width: 2px; }}
+  .gantt-bar.success {{ background: var(--success); }}
+  .gantt-bar.failed {{ background: var(--danger); }}
+  .gantt-bar.skipped {{ background: var(--muted); }}
+  .gantt-bar.critical {{ box-shadow: 0 0 0 2px var(--critical) inset; }}
+  .gantt-bar:hover {{ opacity: 0.85; }}
+  .gantt-tooltip {{ position: absolute; bottom: 100%; left: 50%; transform: translateX(-50%); background: #1d1d1f; color: #fff; padding: 4px 8px; border-radius: 4px; font-size: 11px; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity 0.15s; }}
+  .gantt-bar:hover .gantt-tooltip {{ opacity: 1; }}
+  /* 表格 */
+  table {{ width: 100%; border-collapse: collapse; background: var(--card); border-radius: 10px; overflow: hidden; border: 1px solid var(--border); }}
+  th, td {{ padding: 10px 12px; text-align: left; font-size: 13px; }}
+  th {{ background: #fafafa; font-weight: 600; color: var(--muted); text-transform: uppercase; font-size: 11px; letter-spacing: 0.5px; }}
+  tbody tr {{ border-top: 1px solid var(--border); }}
+  tbody tr:hover {{ background: #fafafa; }}
+  td.num {{ font-family: ui-monospace, monospace; text-align: right; }}
+  .badge {{ display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 500; }}
+  .badge.success {{ background: rgba(52,199,89,0.15); color: var(--success); }}
+  .badge.failed {{ background: rgba(255,59,48,0.15); color: var(--danger); }}
+  .badge.skipped {{ background: rgba(110,110,115,0.15); color: var(--muted); }}
+  .star {{ color: var(--critical); font-weight: 700; }}
+  .footer {{ margin-top: 32px; color: var(--muted); font-size: 12px; text-align: center; }}
+</style>
+</head>
+<body>
+  <h1>PyFlowX 性能剖面报告</h1>
+  <p class="subtitle">由 <code>pxp</code> 生成 · {generated_at}</p>
+
+  <h2>图级指标</h2>
+  <div class="cards">
+    <div class="card"><div class="label">总耗时</div><div class="value">{total_duration:.3f}<span class="unit">s</span></div></div>
+    <div class="card"><div class="label">关键路径耗时</div><div class="value">{critical_duration:.3f}<span class="unit">s</span></div></div>
+    <div class="card"><div class="label">平均并行度</div><div class="value">{avg_par:.2f}</div></div>
+    <div class="card"><div class="label">峰值并行度</div><div class="value">{peak_par}</div></div>
+    <div class="card"><div class="label">并行度效率</div><div class="value">{efficiency:.1f}<span class="unit">%</span></div></div>
+    <div class="card"><div class="label">任务总数</div><div class="value">{task_count}</div></div>
+  </div>
+
+  <h2>关键路径</h2>
+  <div class="critical-path">
+    <div class="label">最长依赖路径（串行瓶颈）</div>
+    <div class="chain">{critical_chain}</div>
+  </div>
+
+  <h2>任务时间线</h2>
+  <div class="gantt">
+    {gantt_rows}
+  </div>
+
+  <h2>Top 瓶颈任务</h2>
+  <table>
+    <thead><tr><th>任务</th><th class="num">耗时</th><th class="num">等待</th><th class="num">尝试</th><th>关键路径</th><th>状态</th></tr></thead>
+    <tbody>
+{bottleneck_rows}
+    </tbody>
+  </table>
+
+  <h2>全部任务</h2>
+  <table>
+    <thead><tr><th>任务</th><th class="num">耗时</th><th class="num">等待</th><th class="num">尝试</th><th>关键路径</th><th>状态</th><th>依赖</th></tr></thead>
+    <tbody>
+{all_task_rows}
+    </tbody>
+  </table>
+
+  <div class="footer">由 PyFlowX · pxp 生成</div>
+</body>
+</html>"""
+
+
+def _status_badge(status: TaskStatus) -> str:
+    """生成状态徽章 HTML。"""
+    cls = status.value
+    return f'<span class="badge {cls}">{cls}</span>'
+
+
+def _format_critical_chain(path: tuple[str, ...]) -> str:
+    """格式化关键路径为 HTML 链。"""
+    if not path:
+        return '<em style="color:var(--muted)">(无)</em>'
+    arrow = '<span class="arrow">→</span>'
+    return arrow.join(f"<strong>{name}</strong>" for name in path)
+
+
+def _render_gantt(profile: ProfileReport) -> str:
+    """渲染甘特图行 HTML。
+
+    每个任务一行：标签 + 时间条。时间条位置基于 wait_time + 依赖关系
+    重建相对开始时间（相对最早任务起点），归一化到 0-100% 宽度。
+    SKIPPED 任务不显示（无时间戳）。
+    """
+    visible = [t for t in profile.tasks if t.status != TaskStatus.SKIPPED and t.duration > 0]
+    if not visible:
+        return '<div style="color:var(--muted);padding:12px;">(无时间线数据)</div>'
+
+    # 重建相对开始时间：start[name] = max(end[dep]) + wait_time
+    # profile.tasks 已是拓扑序，可直接按序计算
+    start: dict[str, float] = {}
+    end: dict[str, float] = {}
+    for t in profile.tasks:
+        if t.status == TaskStatus.SKIPPED:
+            continue
+        dep_end = 0.0
+        for dep in t.deps:
+            dep_end = max(dep_end, end.get(dep, 0.0))
+        s = dep_end + t.wait_time
+        start[t.name] = s
+        end[t.name] = s + t.duration
+
+    # 归一化：以最早开始时间为 0，最晚结束为 100%
+    min_start = min(start.get(t.name, 0.0) for t in visible)
+    max_end = max(end.get(t.name, 0.0) for t in visible)
+    span = max_end - min_start
+    if span <= 0:
+        span = 1.0
+
+    rows: list[str] = []
+    for t in visible:
+        s = start.get(t.name, 0.0) - min_start
+        left_pct = (s / span) * 100
+        width_pct = (t.duration / span) * 100
+        cls = t.status.value
+        critical_cls = " critical" if t.is_on_critical_path else ""
+        tooltip = f"{t.name}: {t.duration:.3f}s @ +{s:.3f}s ({t.status.value})"
+        rows.append(
+            f'      <div class="gantt-row">'
+            f'<div class="gantt-label" title="{t.name}">{t.name}</div>'
+            f'<div class="gantt-track">'
+            f'<div class="gantt-bar {cls}{critical_cls}" style="left:{left_pct:.2f}%;width:{width_pct:.2f}%">'
+            f'<span class="gantt-tooltip">{tooltip}</span>'
+            f"</div></div></div>"
+        )
+    return "\n".join(rows)
+
+
+def _render_task_row(t: TaskProfile, show_deps: bool = False) -> str:
+    """渲染任务表格行 HTML。"""
+    star = '<span class="star">★</span>' if t.is_on_critical_path else ""
+    deps = ", ".join(t.deps) if show_deps and t.deps else ""
+    deps_cell = f"<td>{deps}</td>" if show_deps else ""
+    return (
+        f"      <tr>"
+        f"<td><code>{t.name}</code></td>"
+        f'<td class="num">{t.duration:.3f}s</td>'
+        f'<td class="num">{t.wait_time:.3f}s</td>'
+        f'<td class="num">{t.attempts}</td>'
+        f"<td>{star}</td>"
+        f"<td>{_status_badge(t.status)}</td>"
+        f"{deps_cell}"
+        f"</tr>"
+    )
+
+
+def _render_html(profile: ProfileReport) -> str:
+    """渲染完整 HTML 报告。"""
+    from datetime import datetime as _dt
+
+    bottlenecks = profile.top_bottlenecks(5)
+    bottleneck_rows = (
+        "\n".join(_render_task_row(t) for t in bottlenecks)
+        or '      <tr><td colspan="6" style="color:var(--muted);">(无)</td></tr>'
+    )
+    all_task_rows = (
+        "\n".join(_render_task_row(t, show_deps=True) for t in profile.tasks)
+        or '      <tr><td colspan="7" style="color:var(--muted);">(无)</td></tr>'
+    )
+
+    return _HTML_TEMPLATE.format(
+        generated_at=_dt.now().strftime("%Y-%m-%d %H:%M:%S"),
+        total_duration=profile.total_duration,
+        critical_duration=profile.critical_path_duration,
+        avg_par=profile.avg_parallelism,
+        peak_par=profile.peak_parallelism,
+        efficiency=profile.parallelism_efficiency * 100,
+        task_count=len(profile.tasks),
+        critical_chain=_format_critical_chain(profile.critical_path),
+        gantt_rows=_render_gantt(profile),
+        bottleneck_rows=bottleneck_rows,
+        all_task_rows=all_task_rows,
+    )

tests/cli/test_profiler.py

@@ -0,0 +1,545 @@
+"""pxp 性能分析器测试.
+
+覆盖策略：
+* HTML 渲染：to_html() 输出结构正确，含关键章节。
+* pxp CLI：参数解析、脚本执行、报告生成、浏览器调用、错误处理。
+* hook 注入：捕获 px.run() 调用，还原原始函数。
+"""
+
+from __future__ import annotations
+
+import sys
+from datetime import datetime, timedelta
+from pathlib import Path
+from typing import Any
+
+import pytest
+
+import pyflowx as px
+from pyflowx.cli import profiler
+from pyflowx.profiling import ProfileReport
+from pyflowx.report import RunReport
+from pyflowx.task import TaskResult, TaskSpec, TaskStatus
+
+
+def _fn() -> int:
+    return 1
+
+
+def _spec(name: str, deps: tuple[str, ...] = ()) -> TaskSpec[Any]:
+    return TaskSpec[Any](name, _fn, depends_on=deps)
+
+
+def _result(
+    name: str,
+    start: datetime,
+    duration: float,
+    *,
+    status: TaskStatus = TaskStatus.SUCCESS,
+    attempts: int = 1,
+) -> TaskResult[Any]:
+    """构造带时间戳的 TaskResult."""
+    end = start + timedelta(seconds=duration) if duration > 0 else start
+    return TaskResult[Any](
+        spec=_spec(name),
+        status=status,
+        value=None,
+        attempts=attempts,
+        started_at=start if duration > 0 or status != TaskStatus.SKIPPED else None,
+        finished_at=end if duration > 0 or status != TaskStatus.SKIPPED else None,
+    )
+
+
+def _build_simple_profile() -> ProfileReport:
+    """构造一个简单的 ProfileReport 用于测试 HTML 输出."""
+    start = datetime(2024, 1, 1, 0, 0, 0)
+    report = px.RunReport()
+    report.results["a"] = _result("a", start, 1.0)
+    report.results["b"] = _result("b", start + timedelta(seconds=1), 2.0)
+    graph = px.Graph.from_specs([
+        _spec("a"),
+        _spec("b", deps=("a",)),
+    ])
+    return ProfileReport.from_report(report, graph)
+
+
+class TestToHtml:
+    """测试 ProfileReport.to_html()."""
+
+    def test_to_html_contains_key_sections(self) -> None:
+        """HTML 应包含所有关键章节标题。"""
+        profile = _build_simple_profile()
+        html = profile.to_html()
+
+        assert "<!DOCTYPE html>" in html
+        assert "PyFlowX 性能剖面报告" in html
+        assert "图级指标" in html
+        assert "关键路径" in html
+        assert "任务时间线" in html
+        assert "Top 瓶颈任务" in html
+        assert "全部任务" in html
+
+    def test_to_html_contains_metrics(self) -> None:
+        """HTML 应包含图级指标数值。"""
+        profile = _build_simple_profile()
+        html = profile.to_html()
+
+        # 总耗时 3.0s (a=1 + b=2)
+        assert "3.000" in html
+        # 任务名
+        assert "a" in html
+        assert "b" in html
+
+    def test_to_html_contains_critical_path(self) -> None:
+        """HTML 应包含关键路径任务链。"""
+        profile = _build_simple_profile()
+        html = profile.to_html()
+
+        # 关键路径是 a -> b
+        assert "<strong>a</strong>" in html
+        assert "<strong>b</strong>" in html
+
+    def test_to_html_contains_gantt_bars(self) -> None:
+        """HTML 应包含甘特图条。"""
+        profile = _build_simple_profile()
+        html = profile.to_html()
+
+        assert "gantt-row" in html
+        assert "gantt-bar" in html
+        # 每个非 SKIPPED 任务一个条
+        assert html.count("gantt-bar") >= 2
+
+    def test_to_html_empty_profile(self) -> None:
+        """空报告的 HTML 应不崩溃。"""
+        report = px.RunReport()
+        graph = px.Graph()
+        profile = ProfileReport.from_report(report, graph)
+        html = profile.to_html()
+
+        assert "PyFlowX 性能剖面报告" in html
+        assert "(无)" in html
+
+    def test_to_html_with_failed_task(self) -> None:
+        """含 FAILED 任务的 HTML 应包含失败状态徽章。"""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0, status=TaskStatus.FAILED)
+        graph = px.Graph.from_specs([_spec("a")])
+
+        profile = ProfileReport.from_report(report, graph)
+        html = profile.to_html()
+
+        assert "failed" in html
+        assert "badge" in html
+
+    def test_to_html_with_skipped_task(self) -> None:
+        """含 SKIPPED 任务的 HTML 不应在甘特图中显示该任务。"""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = TaskResult[Any](
+            spec=_spec("b"),
+            status=TaskStatus.SKIPPED,
+            reason="skip",
+        )
+        graph = px.Graph.from_specs([_spec("a"), _spec("b")])
+
+        profile = ProfileReport.from_report(report, graph)
+        html = profile.to_html()
+
+        # SKIPPED 任务的徽章应出现
+        assert "skipped" in html
+
+    def test_to_html_self_contained(self) -> None:
+        """HTML 应自包含（无外部依赖）。"""
+        profile = _build_simple_profile()
+        html = profile.to_html()
+
+        # 不引用外部资源
+        assert "<link" not in html
+        assert "<script src" not in html
+
+
+class TestProfilerArgumentParsing:
+    """测试 pxp CLI 参数解析。"""
+
+    def test_default_export_is_html(self) -> None:
+        """默认导出格式为 html。"""
+        parser = profiler._build_parser()
+        args, remaining = parser.parse_known_args(["pymake.py"])
+        assert args.export == "html"
+        assert args.no_browser is False
+        assert args.output is None
+        assert remaining == ["pymake.py"]
+
+    def test_export_text(self) -> None:
+        """-E text 应设置导出格式为 text。"""
+        parser = profiler._build_parser()
+        args, _ = parser.parse_known_args(["-E", "text", "pymake.py"])
+        assert args.export == "text"
+
+    def test_no_browser_flag(self) -> None:
+        """--no-browser 应设置标志。"""
+        parser = profiler._build_parser()
+        args, _ = parser.parse_known_args(["--no-browser", "pymake.py"])
+        assert args.no_browser is True
+
+    def test_output_option(self) -> None:
+        """-o 应设置输出路径。"""
+        parser = profiler._build_parser()
+        args, _ = parser.parse_known_args(["-o", "report.html", "pymake.py"])
+        assert args.output == "report.html"
+
+    def test_script_args_separated(self) -> None:
+        """脚本参数应通过 remaining 分离。"""
+        parser = profiler._build_parser()
+        _, remaining = parser.parse_known_args(["pymake.py", "t", "--quiet"])
+        assert remaining == ["pymake.py", "t", "--quiet"]
+
+    def test_no_args_prints_help(
+        self,
+        capsys: pytest.CaptureFixture[str],
+        monkeypatch: pytest.MonkeyPatch,
+    ) -> None:
+        """无参数应打印帮助并以退出码 2 退出。"""
+        monkeypatch.setattr(sys, "argv", ["pxp"])
+        with pytest.raises(SystemExit) as exc_info:
+            profiler.main()
+        assert exc_info.value.code == 2
+        captured = capsys.readouterr()
+        assert "usage" in captured.out.lower() or "usage" in captured.err.lower()
+
+
+class TestCapturePxRun:
+    """测试 _capture_px_run hook 注入。"""
+
+    def test_capture_captures_run_call(self) -> None:
+        """hook 应捕获 px.run() 调用的 graph 和 report。"""
+        captured = profiler._capture_px_run()
+        try:
+            graph = px.Graph.from_specs([px.TaskSpec("a", lambda: 1)])
+            px.run(graph, strategy="sequential")
+            assert "graph" in captured
+            assert "report" in captured
+            assert captured["graph"] is graph
+        finally:
+            captured["_restore"]()
+
+    def test_capture_restores_original(self) -> None:
+        """还原后 px.run 和 RunReport.__init__ 应恢复为原函数。"""
+        original_run = px.run
+        original_init = RunReport.__init__
+        captured = profiler._capture_px_run()
+        # 注入期间 px.run 和 RunReport.__init__ 已被替换
+        assert px.run is not original_run
+        assert RunReport.__init__ is not original_init
+        captured["_restore"]()
+        # 还原后恢复
+        assert px.run is original_run
+        assert RunReport.__init__ is original_init
+
+    def test_capture_via_runner_run(self) -> None:
+        """hook 应捕获通过 CliRunner 执行的 run() 调用。"""
+        from pyflowx import runner as runner_mod
+
+        captured = profiler._capture_px_run()
+        try:
+            # 验证 runner.run 也被 patch（指向 patched_run）
+            assert runner_mod.run is px.executors.run
+            graph = px.Graph.from_specs([px.TaskSpec("a", lambda: 1)])
+            runner_mod.run(graph, strategy="sequential")
+            assert "report" in captured
+        finally:
+            captured["_restore"]()
+
+    def test_capture_captures_report_on_failure(self) -> None:
+        """run() 抛出 TaskFailedError 时仍应捕获 report 实例。"""
+        from pyflowx.executors import TaskFailedError
+
+        def failing() -> None:
+            raise RuntimeError("boom")
+
+        graph = px.Graph.from_specs([px.TaskSpec("a", failing)])
+        captured = profiler._capture_px_run()
+        try:
+            with pytest.raises(TaskFailedError):
+                px.run(graph, strategy="sequential")
+            # 即使 run() 抛异常，report 也应被捕获（含已执行任务的结果）
+            assert "report" in captured
+            assert "graph" in captured
+            assert captured["graph"] is graph
+        finally:
+            captured["_restore"]()
+
+
+class TestRunTargetScript:
+    """测试 _run_target_script。"""
+
+    def test_run_simple_script(self, tmp_path: Path) -> None:
+        """应能执行简单脚本并返回模块字典。"""
+        script = tmp_path / "simple.py"
+        script.write_text("x = 42\n", encoding="utf-8")
+
+        result = profiler._run_target_script(script, [])
+        assert result["x"] == 42
+
+    def test_run_script_with_sys_exit(self, tmp_path: Path) -> None:
+        """脚本调用 sys.exit 应抛 SystemExit。"""
+        script = tmp_path / "exit.py"
+        script.write_text("import sys; sys.exit(0)\n", encoding="utf-8")
+
+        with pytest.raises(SystemExit):
+            profiler._run_target_script(script, [])
+
+    def test_run_script_sets_argv(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """应正确设置 sys.argv。"""
+        script = tmp_path / "argv.py"
+        script.write_text(
+            "import sys\nassert sys.argv[0] == __file__\nassert sys.argv[1:] == ['arg1', 'arg2']\n",
+            encoding="utf-8",
+        )
+        profiler._run_target_script(script, ["arg1", "arg2"])
+
+    def test_run_script_adds_dir_to_path(self, tmp_path: Path) -> None:
+        """脚本所在目录应加入 sys.path。"""
+        script = tmp_path / "pathcheck.py"
+        script.write_text(
+            "import sys, os\nassert os.path.dirname(__file__) in sys.path\n",
+            encoding="utf-8",
+        )
+        profiler._run_target_script(script, [])
+
+
+class TestOutputReport:
+    """测试 _output_report。"""
+
+    def test_output_text_format(
+        self,
+        capsys: pytest.CaptureFixture[str],
+    ) -> None:
+        """text 格式应打印 describe() 到 stdout。"""
+        profile = _build_simple_profile()
+        profiler._output_report(profile, export="text", output=None, script_stem="test", no_browser=True)
+        captured = capsys.readouterr()
+        assert "PyFlowX 性能剖面报告" in captured.out
+        assert "图级指标" in captured.out
+
+    def test_output_html_default_filename(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """HTML 默认输出到 <script>_profile.html。"""
+        monkeypatch.chdir(tmp_path)
+        profile = _build_simple_profile()
+        profiler._output_report(profile, export="html", output=None, script_stem="mymake", no_browser=True)
+
+        out_file = tmp_path / "mymake_profile.html"
+        assert out_file.exists()
+        content = out_file.read_text(encoding="utf-8")
+        assert "PyFlowX 性能剖面报告" in content
+
+    def test_output_html_custom_path(self, tmp_path: Path) -> None:
+        """HTML 应写入指定路径。"""
+        out_file = tmp_path / "custom.html"
+        profile = _build_simple_profile()
+        profiler._output_report(profile, export="html", output=str(out_file), script_stem="test", no_browser=True)
+        assert out_file.exists()
+        assert "PyFlowX" in out_file.read_text(encoding="utf-8")
+
+    def test_output_html_opens_browser(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """no_browser=False 应调用 webbrowser.open。"""
+        monkeypatch.chdir(tmp_path)
+        opened: list[str] = []
+        monkeypatch.setattr(profiler.webbrowser, "open", opened.append)
+
+        profile = _build_simple_profile()
+        profiler._output_report(profile, export="html", output=None, script_stem="test", no_browser=False)
+
+        assert len(opened) == 1
+        assert opened[0].startswith("file://")
+
+    def test_output_html_no_browser_flag(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """no_browser=True 不应调用 webbrowser.open。"""
+        monkeypatch.chdir(tmp_path)
+        opened: list[str] = []
+        monkeypatch.setattr(profiler.webbrowser, "open", opened.append)
+
+        profile = _build_simple_profile()
+        profiler._output_report(profile, export="html", output=None, script_stem="test", no_browser=True)
+
+        assert len(opened) == 0
+
+
+class TestProfilerMainIntegration:
+    """main() 集成测试。"""
+
+    def test_main_analyses_script_with_px_run(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """main() 应分析含 px.run() 的脚本并生成 HTML。"""
+        script = tmp_path / "mytool.py"
+        script.write_text(
+            "import pyflowx as px\n"
+            "graph = px.Graph.from_specs([\n"
+            "    px.TaskSpec('a', lambda: 1),\n"
+            "    px.TaskSpec('b', lambda: 2, depends_on=('a',)),\n"
+            "])\n"
+            "px.run(graph, strategy='sequential')\n",
+            encoding="utf-8",
+        )
+        out_file = tmp_path / "report.html"
+        monkeypatch.setattr(sys, "argv", ["pxp", "--no-browser", "-o", str(out_file), str(script)])
+
+        profiler.main()
+
+        assert out_file.exists()
+        content = out_file.read_text(encoding="utf-8")
+        assert "PyFlowX 性能剖面报告" in content
+        assert "任务时间线" in content
+
+    def test_main_analyses_script_with_clirunner(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """main() 应分析含 CliRunner 的脚本。"""
+        script = tmp_path / "clirunner_tool.py"
+        script.write_text(
+            "import pyflowx as px\n"
+            "runner = px.CliRunner(\n"
+            "    aliases={'t': px.TaskSpec('t', lambda: 1)},\n"
+            ")\n"
+            "runner.run_cli(['t'])\n",
+            encoding="utf-8",
+        )
+        out_file = tmp_path / "report.html"
+        monkeypatch.setattr(sys, "argv", ["pxp", "--no-browser", "-o", str(out_file), str(script)])
+
+        profiler.main()
+
+        assert out_file.exists()
+        content = out_file.read_text(encoding="utf-8")
+        assert "PyFlowX 性能剖面报告" in content
+
+    def test_main_text_export(
+        self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch, capsys: pytest.CaptureFixture[str]
+    ) -> None:
+        """main() -E text 应输出文本到 stdout。"""
+        script = tmp_path / "simple.py"
+        script.write_text(
+            "import pyflowx as px\n"
+            "graph = px.Graph.from_specs([px.TaskSpec('a', lambda: 1)])\n"
+            "px.run(graph, strategy='sequential')\n",
+            encoding="utf-8",
+        )
+        monkeypatch.setattr(sys, "argv", ["pxp", "-E", "text", "--no-browser", str(script)])
+
+        profiler.main()
+        captured = capsys.readouterr()
+        assert "PyFlowX 性能剖面报告" in captured.out
+
+    def test_main_script_not_exist(
+        self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch, capsys: pytest.CaptureFixture[str]
+    ) -> None:
+        """脚本不存在应以退出码 2 退出。"""
+        monkeypatch.setattr(sys, "argv", ["pxp", "--no-browser", str(tmp_path / "nonexistent.py")])
+        with pytest.raises(SystemExit) as exc_info:
+            profiler.main()
+        assert exc_info.value.code == 2
+
+    def test_main_no_px_run_captured(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """脚本未调用 px.run() 应以退出码 1 退出。"""
+        script = tmp_path / "no_run.py"
+        script.write_text("print('just printing')\n", encoding="utf-8")
+        monkeypatch.setattr(sys, "argv", ["pxp", "--no-browser", str(script)])
+        with pytest.raises(SystemExit) as exc_info:
+            profiler.main()
+        assert exc_info.value.code == 1
+
+    def test_main_passes_script_args(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """应将脚本参数传递给目标脚本。"""
+        script = tmp_path / "argcheck.py"
+        script.write_text(
+            "import sys\n"
+            "assert sys.argv[1:] == ['myarg'], f'got {sys.argv[1:]}'\n"
+            "import pyflowx as px\n"
+            "px.run(px.Graph.from_specs([px.TaskSpec('a', lambda: 1)]), strategy='sequential')\n",
+            encoding="utf-8",
+        )
+        out_file = tmp_path / "report.html"
+        monkeypatch.setattr(sys, "argv", ["pxp", "--no-browser", "-o", str(out_file), str(script), "myarg"])
+
+        profiler.main()  # 不抛异常即成功
+
+    def test_main_handles_script_exception(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """脚本抛异常时应捕获并继续生成报告（如果有 report）。"""
+        script = tmp_path / "raise.py"
+        script.write_text(
+            "import pyflowx as px\n"
+            "px.run(px.Graph.from_specs([px.TaskSpec('a', lambda: 1)]), strategy='sequential')\n"
+            "raise RuntimeError('after run')\n",
+            encoding="utf-8",
+        )
+        out_file = tmp_path / "report.html"
+        monkeypatch.setattr(sys, "argv", ["pxp", "--no-browser", "-o", str(out_file), str(script)])
+
+        profiler.main()  # 不抛异常即成功
+        assert out_file.exists()
+
+    def test_main_auto_calls_main_when_no_main_block(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """脚本无 __main__ 块但定义了 main() 时应自动调用。"""
+        script = tmp_path / "no_main_block.py"
+        script.write_text(
+            "import pyflowx as px\n"
+            "def main():\n"
+            "    px.run(px.Graph.from_specs([px.TaskSpec('a', lambda: 1)]), strategy='sequential')\n"
+            "# 无 if __name__ == '__main__' 块\n",
+            encoding="utf-8",
+        )
+        out_file = tmp_path / "report.html"
+        monkeypatch.setattr(sys, "argv", ["pxp", "--no-browser", "-o", str(out_file), str(script)])
+
+        profiler.main()
+        assert out_file.exists()
+
+    def test_main_auto_calls_main_with_clirunner(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """脚本无 __main__ 块但定义了调用 CliRunner 的 main() 时应自动调用。"""
+        script = tmp_path / "cli_tool.py"
+        script.write_text(
+            "import pyflowx as px\n"
+            "def main():\n"
+            "    runner = px.CliRunner(\n"
+            "        aliases={'t': px.TaskSpec('t', lambda: 1)},\n"
+            "    )\n"
+            "    runner.run_cli(['t'])\n",
+            encoding="utf-8",
+        )
+        out_file = tmp_path / "report.html"
+        monkeypatch.setattr(sys, "argv", ["pxp", "--no-browser", "-o", str(out_file), str(script), "t"])
+
+        profiler.main()
+        assert out_file.exists()
+        content = out_file.read_text(encoding="utf-8")
+        assert "PyFlowX 性能剖面报告" in content
+
+    def test_main_no_main_function_exits_with_1(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        """脚本无 main() 且未调用 px.run() 应以退出码 1 退出。"""
+        script = tmp_path / "no_main.py"
+        script.write_text("x = 1\n", encoding="utf-8")
+        monkeypatch.setattr(sys, "argv", ["pxp", "--no-browser", str(script)])
+        with pytest.raises(SystemExit) as exc_info:
+            profiler.main()
+        assert exc_info.value.code == 1
+
+
+class TestTryCallMain:
+    """测试 _try_call_main。"""
+
+    def test_calls_main_when_present(self) -> None:
+        """模块字典含 main 可调用对象时应调用它。"""
+        called: list[bool] = []
+
+        def fake_main() -> None:
+            called.append(True)
+
+        profiler._try_call_main({"main": fake_main})
+        assert called == [True]
+
+    def test_no_main_does_nothing(self) -> None:
+        """模块字典不含 main 时不应报错。"""
+        profiler._try_call_main({})  # 不抛异常即成功
+
+    def test_non_callable_main_does_nothing(self) -> None:
+        """main 不是可调用对象时不应报错。"""
+        profiler._try_call_main({"main": "not a function"})  # 不抛异常即成功

tests/cli/test_pymake.py

@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+from pathlib import Path
 from unittest.mock import patch
 
 import pytest
@@ -123,6 +124,22 @@ class TestTaskSpecDefinitions:
         assert spec.cmd == ["tox", "-p", "auto"]
         assert spec.skip_if_missing is False
 
+    def test_all_tasks_have_correct_cwd(self) -> None:
+        """所有任务应该有正确的 cwd 设置（指向项目根目录）."""
+        # 验证 ROOT_DIR 定义正确（向上三层到达项目根目录）
+        expected_root = Path(__file__).parent.parent.parent
+        assert expected_root == pymake.ROOT_DIR
+
+        # 验证 tasks 中的所有命令任务都有正确的 cwd
+        for spec in pymake.tasks:
+            if spec.cmd is not None:
+                assert spec.cwd == pymake.ROOT_DIR, f"任务 {spec.name} 的 cwd 应为 {pymake.ROOT_DIR}"
+
+        # 验证 aliases 中的内联任务（doc/lint/tox）也有正确的 cwd
+        for name in ("doc", "lint", "tox"):
+            spec = _find_task(name)
+            assert spec.cwd == pymake.ROOT_DIR, f"任务 {name} 的 cwd 应为 {pymake.ROOT_DIR}"
+
 
 # ---------------------------------------------------------------------- #
 # main function

tests/test_profiling.py

@@ -0,0 +1,574 @@
+"""性能剖面（ProfileReport）测试.
+
+覆盖策略：
+* 构造带时间戳的 RunReport + Graph，验证关键路径、并行度、瓶颈排序。
+* 边界场景：空报告、单任务、无时间戳、SKIPPED 任务、图校验失败。
+* 输出格式：to_dict / describe / top_bottlenecks / critical_tasks。
+"""
+
+from __future__ import annotations
+
+from datetime import datetime, timedelta
+from typing import Any
+
+import pyflowx as px
+from pyflowx.profiling import ProfileReport, TaskProfile
+from pyflowx.task import TaskResult, TaskSpec, TaskStatus
+
+
+def _fn() -> int:
+    return 1
+
+
+def _spec(name: str, deps: tuple[str, ...] = ()) -> TaskSpec[Any]:
+    return TaskSpec[Any](name, _fn, depends_on=deps)
+
+
+def _result(
+    name: str,
+    start: datetime,
+    duration: float,
+    *,
+    status: TaskStatus = TaskStatus.SUCCESS,
+    attempts: int = 1,
+) -> TaskResult[Any]:
+    """构造带时间戳的 TaskResult."""
+    end = start + timedelta(seconds=duration) if duration > 0 else start
+    return TaskResult[Any](
+        spec=_spec(name),
+        status=status,
+        value=None,
+        attempts=attempts,
+        started_at=start if duration > 0 or status != TaskStatus.SKIPPED else None,
+        finished_at=end if duration > 0 or status != TaskStatus.SKIPPED else None,
+    )
+
+
+def _skipped_result(name: str, reason: str = "skip") -> TaskResult[Any]:
+    """构造 SKIPPED 结果（无时间戳）."""
+    return TaskResult[Any](
+        spec=_spec(name),
+        status=TaskStatus.SKIPPED,
+        reason=reason,
+    )
+
+
+class TestProfileReportConstruction:
+    """测试 ProfileReport 构建."""
+
+    def test_empty_report(self) -> None:
+        """空报告应产生空剖面."""
+        report = px.RunReport()
+        graph = px.Graph()
+        profile = ProfileReport.from_report(report, graph)
+        assert len(profile.tasks) == 0
+        assert profile.total_duration == 0.0
+        assert profile.critical_path == ()
+        assert profile.critical_path_duration == 0.0
+        assert profile.avg_parallelism == 0.0
+        assert profile.peak_parallelism == 0
+
+    def test_single_task(self) -> None:
+        """单任务：关键路径就是它自己，并行度为 1."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.5)
+        graph = px.Graph.from_specs([_spec("a")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        assert len(profile.tasks) == 1
+        assert profile.tasks[0].name == "a"
+        assert profile.tasks[0].duration == 1.5
+        assert profile.tasks[0].is_on_critical_path
+        assert profile.total_duration == 1.5
+        assert profile.critical_path == ("a",)
+        assert profile.critical_path_duration == 1.5
+        assert profile.avg_parallelism == 1.0
+        assert profile.peak_parallelism == 1
+        assert profile.parallelism_efficiency == 1.0
+
+    def test_serial_chain(self) -> None:
+        """串行链 a -> b -> c：关键路径为全部，效率 100%."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = _result("b", start + timedelta(seconds=1), 2.0)
+        report.results["c"] = _result("c", start + timedelta(seconds=3), 1.5)
+        graph = px.Graph.from_specs([
+            _spec("a"),
+            _spec("b", deps=("a",)),
+            _spec("c", deps=("b",)),
+        ])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        assert profile.total_duration == 4.5
+        assert profile.critical_path_duration == 4.5
+        assert profile.critical_path == ("a", "b", "c")
+        assert profile.parallelism_efficiency == 1.0
+        assert profile.peak_parallelism == 1
+        assert profile.avg_parallelism == 1.0
+
+    def test_parallel_tasks(self) -> None:
+        """并行任务 a, b 同时执行：关键路径取较长者，效率 < 1."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = _result("b", start, 2.0)
+        graph = px.Graph.from_specs([_spec("a"), _spec("b")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        # wall-clock = 2.0, 关键路径 = 2.0 (b), 效率 = 1.0
+        # 因为关键路径定义就是最长路径，与 wall-clock 相同
+        assert profile.total_duration == 2.0
+        assert profile.critical_path_duration == 2.0
+        assert profile.critical_path == ("b",)
+        assert profile.peak_parallelism == 2
+        # 平均并行度 = (1.0 + 2.0) / 2.0 = 1.5
+        assert profile.avg_parallelism == 1.5
+
+    def test_parallel_with_join(self) -> None:
+        """a, b 并行后 join 到 c：关键路径 a->c 或 b->c."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = _result("b", start, 3.0)
+        report.results["c"] = _result("c", start + timedelta(seconds=3), 1.0)
+        graph = px.Graph.from_specs([
+            _spec("a"),
+            _spec("b"),
+            _spec("c", deps=("a", "b")),
+        ])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        # 关键路径 = b -> c (3 + 1 = 4)
+        assert profile.critical_path_duration == 4.0
+        assert profile.critical_path == ("b", "c")
+        assert profile.tasks[0].is_on_critical_path is False  # a 不在关键路径
+        # task("b") 在关键路径上
+        assert profile.task("b").is_on_critical_path
+        assert profile.task("c").is_on_critical_path
+
+    def test_skipped_task_no_timestamp(self) -> None:
+        """SKIPPED 任务无时间戳：不影响并行度计算."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = _skipped_result("b")
+        graph = px.Graph.from_specs([_spec("a"), _spec("b")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        # b 是 SKIPPED，duration=0
+        assert profile.task("b").status == TaskStatus.SKIPPED
+        assert profile.task("b").duration == 0.0
+        assert profile.peak_parallelism == 1  # 只有 a 在跑
+
+
+class TestWaitTime:
+    """测试等待时间计算."""
+
+    def test_no_deps_zero_wait(self) -> None:
+        """无依赖任务等待时间为 0."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        graph = px.Graph.from_specs([_spec("a")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        assert profile.task("a").wait_time == 0.0
+
+    def test_wait_after_dep_completes(self) -> None:
+        """b 在 a 完成后等待 0.5s 才开始."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = _result("b", start + timedelta(seconds=1.5), 1.0)
+        graph = px.Graph.from_specs([
+            _spec("a"),
+            _spec("b", deps=("a",)),
+        ])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        assert profile.task("b").wait_time == 0.5
+
+    def test_wait_negative_clamped_to_zero(self) -> None:
+        """b 在 a 完成前就开始（异常情况）应钳制为 0."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 2.0)
+        # b 在 a 还没完成时就开始（不应该但可能发生）
+        report.results["b"] = _result("b", start + timedelta(seconds=1), 1.0)
+        graph = px.Graph.from_specs([
+            _spec("a"),
+            _spec("b", deps=("a",)),
+        ])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        # a 在 t=2 结束，b 在 t=1 开始，delta = -1，钳制为 0
+        assert profile.task("b").wait_time == 0.0
+
+    def test_skipped_task_zero_wait(self) -> None:
+        """SKIPPED 任务等待时间为 0."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = _skipped_result("b")
+        graph = px.Graph.from_specs([
+            _spec("a"),
+            _spec("b", deps=("a",)),
+        ])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        assert profile.task("b").wait_time == 0.0
+
+
+class TestCriticalPath:
+    """测试关键路径分析."""
+
+    def test_diamond_dependency(self) -> None:
+        """菱形依赖：a -> b -> d, a -> c -> d，关键路径取较长分支."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = _result("b", start + timedelta(seconds=1), 3.0)
+        report.results["c"] = _result("c", start + timedelta(seconds=1), 1.0)
+        report.results["d"] = _result("d", start + timedelta(seconds=4), 1.0)
+        graph = px.Graph.from_specs([
+            _spec("a"),
+            _spec("b", deps=("a",)),
+            _spec("c", deps=("a",)),
+            _spec("d", deps=("b", "c")),
+        ])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        # 关键路径：a -> b -> d = 1 + 3 + 1 = 5
+        assert profile.critical_path_duration == 5.0
+        assert profile.critical_path == ("a", "b", "d")
+
+    def test_graph_validation_failure_returns_empty(self) -> None:
+        """图校验失败（有环）应回退为空关键路径."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        # 手动构造带环的图（绕过校验）
+        graph = px.Graph()
+        graph.specs["a"] = _spec("a", deps=("b",))
+        graph.specs["b"] = _spec("b", deps=("a",))
+        graph.deps["a"] = ("b",)
+        graph.deps["b"] = ("a",)
+
+        profile = ProfileReport.from_report(report, graph)
+
+        # layers() 抛 CycleError，回退为空
+        assert profile.critical_path == ()
+        assert profile.critical_path_duration == 0.0
+
+
+class TestParallelism:
+    """测试并行度计算."""
+
+    def test_no_timestamps_zero_parallelism(self) -> None:
+        """所有任务无时间戳：并行度为 0."""
+        report = px.RunReport()
+        report.results["a"] = TaskResult[Any](spec=_spec("a"), status=TaskStatus.SUCCESS)
+        graph = px.Graph.from_specs([_spec("a")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        assert profile.avg_parallelism == 0.0
+        assert profile.peak_parallelism == 0
+
+    def test_zero_duration_excluded(self) -> None:
+        """零耗时任务（end <= start）不参与并行度计算."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 0.0)  # 零耗时
+        report.results["b"] = _result("b", start, 1.0)
+        graph = px.Graph.from_specs([_spec("a"), _spec("b")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        # 只有 b 参与，峰值 = 1
+        assert profile.peak_parallelism == 1
+
+    def test_skipped_with_timestamps_excluded(self) -> None:
+        """SKIPPED 任务即使带时间戳也不参与并行度计算."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        # SKIPPED 但带时间戳（异常但可能发生）
+        report.results["a"] = _result("a", start, 1.0, status=TaskStatus.SKIPPED)
+        report.results["b"] = _result("b", start, 1.0)
+        graph = px.Graph.from_specs([_spec("a"), _spec("b")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        # a 是 SKIPPED，被排除；只有 b 参与
+        assert profile.peak_parallelism == 1
+
+    def test_peak_parallelism_three_tasks(self) -> None:
+        """三个任务完全重叠：峰值并行度 = 3."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 3.0)
+        report.results["b"] = _result("b", start, 3.0)
+        report.results["c"] = _result("c", start, 3.0)
+        graph = px.Graph.from_specs([_spec("a"), _spec("b"), _spec("c")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        assert profile.peak_parallelism == 3
+        assert profile.avg_parallelism == 3.0
+
+
+class TestQueries:
+    """测试查询方法."""
+
+    def test_task_lookup(self) -> None:
+        """task(name) 应返回对应剖面."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = _result("b", start, 2.0)
+        graph = px.Graph.from_specs([_spec("a"), _spec("b")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        assert profile.task("a").name == "a"
+        assert profile.task("b").duration == 2.0
+
+    def test_task_lookup_not_found(self) -> None:
+        """task(name) 不存在应抛 KeyError."""
+        report = px.RunReport()
+        graph = px.Graph()
+        profile = ProfileReport.from_report(report, graph)
+        try:
+            profile.task("missing")
+        except KeyError:
+            pass
+        else:
+            raise AssertionError("应抛出 KeyError")
+
+    def test_top_bottlenecks(self) -> None:
+        """top_bottlenecks 应按耗时降序返回."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = _result("b", start, 3.0)
+        report.results["c"] = _result("c", start, 2.0)
+        graph = px.Graph.from_specs([_spec("a"), _spec("b"), _spec("c")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        top3 = profile.top_bottlenecks(3)
+        assert len(top3) == 3
+        assert top3[0].name == "b"
+        assert top3[1].name == "c"
+        assert top3[2].name == "a"
+
+    def test_top_bottlenecks_zero_or_negative(self) -> None:
+        """n <= 0 应返回空元组."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        graph = px.Graph.from_specs([_spec("a")])
+        profile = ProfileReport.from_report(report, graph)
+
+        assert profile.top_bottlenecks(0) == ()
+        assert profile.top_bottlenecks(-1) == ()
+
+    def test_critical_tasks(self) -> None:
+        """critical_tasks 应返回关键路径上的任务（按路径顺序）."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = _result("b", start + timedelta(seconds=1), 3.0)
+        report.results["c"] = _result("c", start + timedelta(seconds=1), 1.0)
+        report.results["d"] = _result("d", start + timedelta(seconds=4), 1.0)
+        graph = px.Graph.from_specs([
+            _spec("a"),
+            _spec("b", deps=("a",)),
+            _spec("c", deps=("a",)),
+            _spec("d", deps=("b", "c")),
+        ])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        # 关键路径 a -> b -> d
+        critical = profile.critical_tasks()
+        assert len(critical) == 3
+        assert [t.name for t in critical] == ["a", "b", "d"]
+
+    def test_failed_tasks(self) -> None:
+        """failed_tasks 应返回 FAILED 状态的任务."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0, status=TaskStatus.FAILED)
+        report.results["b"] = _result("b", start, 1.0)
+        graph = px.Graph.from_specs([_spec("a"), _spec("b")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        failed = profile.failed_tasks()
+        assert len(failed) == 1
+        assert failed[0].name == "a"
+
+    def test_skipped_tasks(self) -> None:
+        """skipped_tasks 应返回 SKIPPED 状态的任务."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        report.results["b"] = _skipped_result("b")
+        graph = px.Graph.from_specs([_spec("a"), _spec("b")])
+
+        profile = ProfileReport.from_report(report, graph)
+
+        skipped = profile.skipped_tasks()
+        assert len(skipped) == 1
+        assert skipped[0].name == "b"
+
+
+class TestOutputFormats:
+    """测试输出格式."""
+
+    def test_to_dict_structure(self) -> None:
+        """to_dict 应返回包含所有字段的字典."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.5)
+        graph = px.Graph.from_specs([_spec("a")])
+
+        profile = ProfileReport.from_report(report, graph)
+        d = profile.to_dict()
+
+        assert "tasks" in d
+        assert "total_duration_seconds" in d
+        assert "critical_path_duration_seconds" in d
+        assert "critical_path" in d
+        assert "avg_parallelism" in d
+        assert "peak_parallelism" in d
+        assert "parallelism_efficiency" in d
+        assert "bottlenecks" in d
+        assert len(d["tasks"]) == 1
+        assert d["tasks"][0]["name"] == "a"
+        assert d["tasks"][0]["status"] == "success"
+        assert d["tasks"][0]["duration_seconds"] == 1.5
+        assert d["tasks"][0]["is_on_critical_path"] is True
+
+    def test_describe_contains_key_sections(self) -> None:
+        """describe 应包含关键章节标题."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        graph = px.Graph.from_specs([_spec("a")])
+
+        profile = ProfileReport.from_report(report, graph)
+        text = profile.describe()
+
+        assert "PyFlowX 性能剖面报告" in text
+        assert "【图级指标】" in text
+        assert "【关键路径】" in text
+        assert "【Top" in text
+        assert "【全部任务】" in text
+        assert "a" in text
+
+    def test_describe_empty_report(self) -> None:
+        """空报告的 describe 应不崩溃且包含章节标题."""
+        report = px.RunReport()
+        graph = px.Graph()
+        profile = ProfileReport.from_report(report, graph)
+        text = profile.describe()
+
+        assert "【图级指标】" in text
+        assert "(无)" in text
+
+    def test_repr(self) -> None:
+        """__repr__ 应包含关键指标."""
+        start = datetime(2024, 1, 1, 0, 0, 0)
+        report = px.RunReport()
+        report.results["a"] = _result("a", start, 1.0)
+        graph = px.Graph.from_specs([_spec("a")])
+
+        profile = ProfileReport.from_report(report, graph)
+        r = repr(profile)
+
+        assert "ProfileReport" in r
+        assert "tasks=1" in r
+        assert "total=1.000s" in r
+
+    def test_task_profile_to_dict(self) -> None:
+        """TaskProfile.to_dict 应返回正确字段."""
+        tp = TaskProfile(
+            name="x",
+            status=TaskStatus.SUCCESS,
+            duration=1.5,
+            attempts=2,
+            wait_time=0.3,
+            is_on_critical_path=True,
+            deps=("a", "b"),
+        )
+        d = tp.to_dict()
+
+        assert d["name"] == "x"
+        assert d["status"] == "success"
+        assert d["duration_seconds"] == 1.5
+        assert d["attempts"] == 2
+        assert d["wait_time_seconds"] == 0.3
+        assert d["is_on_critical_path"] is True
+        assert d["deps"] == ["a", "b"]
+
+
+class TestIntegrationWithRun:
+    """与真实 run() 集成测试."""
+
+    def test_profile_from_real_run(self) -> None:
+        """从真实 run() 结果构建剖面."""
+        import time
+
+        def slow() -> int:
+            time.sleep(0.01)  # 确保任务有实际耗时，避免 duration 极小导致并行度计算为 0
+            return 1
+
+        graph = px.Graph.from_specs([
+            px.TaskSpec("a", slow),
+            px.TaskSpec("b", slow, depends_on=("a",)),
+            px.TaskSpec("c", slow, depends_on=("a",)),
+        ])
+        report = px.run(graph, strategy="sequential")
+
+        profile = ProfileReport.from_report(report, graph)
+
+        assert len(profile.tasks) == 3
+        # sequential 策略下应为串行，duration > 0
+        assert profile.critical_path_duration > 0
+        # sequential 策略下并行度应为 1
+        assert profile.peak_parallelism == 1
+
+    def test_profile_from_thread_run(self) -> None:
+        """从 thread 策略 run() 结果构建剖面，验证并行度 > 1."""
+        import time
+
+        def slow() -> int:
+            time.sleep(0.05)
+            return 1
+
+        graph = px.Graph.from_specs([
+            px.TaskSpec("a", slow),
+            px.TaskSpec("b", slow),
+            px.TaskSpec("c", slow),
+        ])
+        report = px.run(graph, strategy="thread", max_workers=3)
+
+        profile = ProfileReport.from_report(report, graph)
+
+        # 三个任务并行，峰值应 >= 2（可能因调度时机不到 3）
+        assert profile.peak_parallelism >= 2
+        assert profile.critical_path_duration > 0

tests/test_task.py

@@ -193,8 +193,8 @@ def test_should_execute_skip_if_missing_cmd_not_found() -> None:
 
 def test_should_execute_skip_if_missing_cmd_found() -> None:
     """skip_if_missing 但命令存在时应执行."""
-    # 使用 Python 作为已安装的命令
+    # 使用 Python 作为已安装的命令（Windows 上 echo 是 shell 内置，shutil.which 找不到）
-    spec = TaskSpec("a", cmd=["echo"], skip_if_missing=True)  # echo 应存在
+    spec = TaskSpec("a", cmd=["python"], skip_if_missing=True)  # python 应存在
     should_run, reason = spec.should_execute({})
     assert should_run is True
     assert reason is None

uv.lock

@@ -5603,7 +5603,7 @@ pycountry = [
 
 [[package]]
 name = "pyflowx"
-version = "0.2.11"
+version = "0.2.13"
 source = { editable = "." }
 dependencies = [
     { name = "graphlib-backport", marker = "python_full_version < '3.9'" },