feat: 首页改版与 uv / 镜像配置收敛，精简任务数据结构

- 页头只保留品牌与操作图标，三栏改为 1:2:1、容器最宽 1320
- 任务卡片：状态标签移入标题行并缩小，隐藏任务标识，操作行贴内容底边
- uv 配置弹窗：删掉与首页重复的状态条，三段配置改成标签页
- 镜像源：弹窗去掉默认镜像汇总，首页卡片改为展示默认镜像与运行时注入的变量
- 后端：迁移合并为单一基线 0001_init，删掉未生效的 concurrency_policy / retry_*，
  运行触发只剩 schedule / manual；contracts、前端生成类型、README / PLAN 同步

PLAN.md

@@ -146,8 +146,6 @@ Task
 ├── timezone           默认使用系统时区，可选择 IANA 时区
 ├── enabled            是否参与自动调度
 ├── timeout_secs       单次执行超时
-├── concurrency_policy 首版固定为 skip
-├── retry_policy       首版允许 0 次重试，结构上预留
 ├── action             带 type 标签的任务动作
 ├── created_at
 └── updated_at

README.md

@@ -114,14 +114,14 @@ uv run --no-project tools/verify.py --base-url http://127.0.0.1:3000
 
 | 分组 | 能力 |
 | --- | --- |
-| 任务管理 | 增删改查、启用/停用、按 ID/名称搜索、按启用状态与 Action 类型筛选、分页 |
+| 任务管理 | 增删改查、启用/停用、按 ID/名称搜索、按启用状态与 Action 类型筛选 |
 | 调度 | 5/6 位 Cron（支持秒级、别名、月份/星期名）、IANA 时区、启动恢复调度、下次触发时间 |
 | 执行 | 手动立即运行；同一任务重叠触发记为 `skipped`；启动时对账遗留运行 |
 | 进程治理 | Windows Job Object 管理进程树；超时或取消时终止整棵树 |
 | 观测 | 运行历史（状态/触发方式筛选）、退出码、耗时、错误信息、日志下载 |
 | 日志 | SSE 实时推送 + 增量轮询 + 断线重连；编码自动识别；敏感值脱敏；容量与保留期清理 |
 | Python | 自动关联 `.venv`/`venv`/`env`、解释器可选、用 uv 从 `pyproject.toml` / `requirements*.txt` 创建环境（新任务保存时自动创建）、uv 只用程序目录副本或自定义路径（不读系统 PATH）、没有 uv 时可从科大镜像一键下载、`UV_*` 环境变量可配置、注入 PATH/`VIRTUAL_ENV`/`PYTHONIOENCODING`、装包时走默认 PyPI 镜像 |
-| 界面 | 顶部品牌栏 + 三栏工作台（用户/概览/调度 · 任务分组 · uv/镜像/环境卡片）、任务类型 + 脚本语言联动表单、Cron 预览、虚拟环境状态条、页面内目录浏览器、深色日志弹窗 |
+| 界面 | 顶部品牌栏 + 三栏工作台（用户/概览/调度 · 任务卡片 · uv/镜像/环境卡片）、任务类型 + 脚本语言联动表单、Cron 预览、虚拟环境状态条、页面内目录浏览器、深色日志弹窗 |
 | 安全 | 仅回环监听、Origin 白名单、写操作令牌、常量时间比较、请求体上限 |
 | 交付 | 单进程静态托管、SPA 回退、Release 打包、OpenAPI 契约、可选离线字体 |
 
@@ -135,12 +135,11 @@ uv run --no-project tools/verify.py --base-url http://127.0.0.1:3000
 | --- | --- |
 | `id` | 稳定标识，`[A-Za-z0-9_-]`，1–64 字符；同时决定日志目录名 |
 | `name` | 展示名，1–120 字符 |
+| `description` | 一句话说明，≤500 字符；显示在任务卡片副标题和详情里，可留空 |
 | `cron` | 5 或 6 位表达式，例：`0 0 2 * * *`、`*/30 * * * * *`、`@daily` |
 | `timezone` | IANA 时区，例：`Asia/Shanghai` |
 | `enabled` | 是否注册调度 |
 | `timeout_secs` | 1–86400；超时终止整个进程树 |
-| `concurrency_policy` | 目前仅 `skip`（同任务重叠触发被跳过） |
-| `retry_policy` | `max_attempts` ≤ 10、`delay_secs` ≤ 3600；**当前只持久化，不自动重试** |
 | `action` | 见下 |
 
 ### 三类 Action
@@ -187,7 +186,6 @@ queued ──► running ──► succeeded / failed / timed_out / cancelled
 - **取消后立即重跑**：允许；旧进程终止与新进程启动可能短暂重叠。
 - **错过的触发不补跑**：下次触发始终从"现在"开始计算。
 - **下次触发时间**：调度器保存在内存中，`GET /api/v1/schedule` 暴露给前端。
-- **重试**：字段已持久化但执行器尚未实现自动重试（见「已知限制」）。
 
 ---
 
@@ -231,12 +229,21 @@ queued ──► running ──► succeeded / failed / timed_out / cancelled
 - 创建时会使用当前默认 PyPI 镜像：注入 `UV_DEFAULT_INDEX`（实际生效的是它）以及兼容用的 `UV_INDEX_URL` / `PIP_INDEX_URL`，不会绕过镜像设置。
 - uv 只用平台认的两份：程序目录下的 `uv\uv.exe`（「程序目录 uv」，默认），或你指定的 `uv.exe`（「指定路径」）。
   **不读系统 PATH**——PATH 上的 uv 版本会随启动方式变化，不适合当调度器的隐式依赖。
-  没有 uv 时在 uv 配置弹窗点「下载 uv」，从科大镜像
-  `mirrors.ustc.edu.cn/github-release/astral-sh/uv/LatestRelease` 下载当前架构的压缩包，
-  校验 sha256 后解压到 `uv\uv.exe` 并自动切换过去；本机已经装了 uv 的话，把它填进「指定路径」即可。
+  没有 uv 时在 uv 配置弹窗点「下载 uv」，从「下载镜像」（默认科大
+  `mirrors.ustc.edu.cn/github-release`）下载当前架构的压缩包，
+  校验 sha256 后解压到 `uv\uv.exe` 并自动切换过去（弹窗状态条里会显示 uv 与解释器的下载地址）；
+  本机已经装了 uv 的话，把它填进「指定路径」即可。
+- **uv 的下载镜像不跟 PyPI 包索引混用**：它配在 uv 配置弹窗的「下载镜像」里（GitHub Release
+  镜像根），uv 本体与 Python 解释器都从它派生（uv 地址 = `镜像根/astral-sh/uv/LatestRelease`，
+  解释器地址 = `镜像根/astral-sh/python-build-standalone/releases/download`）。
+  解释器这一步也可以单独覆盖：环境变量里就有一条 `UV_PYTHON_INSTALL_MIRROR`（默认跟随镜像根，
+  改它的值即可换成别的发行源），它和 `UV_PYTHON_INSTALL_DIR`、`UV_CACHE_DIR` 一样是固定项，
+  只能改值、不能删除。
 - uv 配置弹窗里还能配置 `UV_*` 环境变量（如 `UV_CACHE_DIR`、`UV_PYTHON_INSTALL_DIR`、`UV_HTTP_TIMEOUT`），
   会注入到每一次 uv 调用，并优先于镜像注入与进程环境。两个路径变量默认是**相对程序目录**的
   `python` / `uv-cache`（随包移动），也可以改成绝对路径。
+- Python 解释器的下载与查看也在 uv 配置弹窗里（`uv python install` / `uv python list`）——
+  解释器属于 uv，只是建虚拟环境时要用；虚拟环境弹窗只从这份已下载列表里挑版本。
 - uv 不可用：保存任务时不会自动建环境，运行时会失败并提示先配置 uv。
 - 运行任务时会把平台 uv 目录加到 PATH 前面，并注入 `UV_PYTHON_INSTALL_DIR`、弹窗里配置的 `UV_*` 和默认 `UV_DEFAULT_INDEX`
   （任务自己配置的环境变量优先）。这样脚本里直接写 `uv ...` 用的也是平台这一份，装包默认走镜像；不会再注入 `PIP_*`。
@@ -260,23 +267,30 @@ queued ──► running ──► succeeded / failed / timed_out / cancelled
 
 ## Web 界面
 
-- **顶部品牌栏**：品牌 + 右侧 Rust 引擎在线状态与版本；页面级导航已去掉，配置都收到任务调度页的卡片里。
-- **三栏工作台**（任务调度页）：左栏用户卡片 + 概览指标 + 调度摘要；中栏搜索筛选 + 按类型（脚本 / HTTP / 二进制）分组的任务卡片与分页；
-  右栏 uv（版本号 / 缓存目录 / Python 目录）、镜像源、托管虚拟环境摘要——点「配置 / 管理」打开对应**弹窗**。
-- **任务卡片**：名称、任务标识、状态、Cron、下次触发，以及运行 / 日志 / 编辑 / 启停 / 删除。
+- **顶部品牌栏**：只保留品牌与副标题；引擎在线状态显示在左栏用户卡片底部（跟随健康检查）。
+  页面级导航已去掉，配置都收到任务调度页的卡片里。
+- **三栏工作台**（任务调度页）：左栏用户卡片 + 概览指标 + 调度摘要；中栏搜索筛选 + **任务卡片**（每个任务一张卡片，一次取最多 100 条，不分页）；
+  右栏 uv（版本号 / 解释器数量 / 缓存目录 / Python 目录 / 下载镜像）、镜像源、托管虚拟环境摘要——点「配置 / 管理」打开对应**弹窗**。
+- **任务卡片**：卡片顶部是任务名称（左侧主色竖线 + 整行标题，右上角是「详情」）；内容区里是任务标识 + 类型标签、任务说明（没填时回退成执行目标）、Cron 与下次触发时间，以及状态和运行 / 日志 / 编辑 / 启停 / 删除。点「详情」打开只读详情弹窗（基本信息 / 执行配置 / 时间）。
 - **编辑器**：先选任务类型（脚本 / HTTP / 二进制），脚本类型再选语言（Python / Shell / Node / Lua），
   非 Python 语言会自动隐藏虚拟环境字段并调整脚本占位符；Cron 预览（实时计算未来 3/5/8/10 次）、
   时区下拉、虚拟环境状态条、调用预览；探测到虚拟环境会自动回填「虚拟环境目录」，仍可手动修改；
   缺少虚拟环境但项目有依赖文件时保存会自动用 uv 创建。解释器由语言自动选择，界面不再要求手填。
-- **目录选择**：页面内目录浏览器（盘符 → 逐级进入 → 使用此目录），同时保留手动输入。
+- **目录选择**：页面内目录浏览器（盘符 → 逐级进入 → 使用此目录），同时保留手动输入；
+  uv 的「指定路径」用同一个浏览器选文件（`include_files=true`，只列 `.exe`）。
 - **日志弹窗**：运行历史筛选、SSE 实时日志、取消运行、下载日志、Escape/焦点陷阱。
-- **uv 配置弹窗**：图标标题 + 右侧规则提示 + 选项 chip 的版式；「程序目录 uv」与「指定路径」二选一，
-  程序目录下没有可用 uv 时才出现「下载 uv」；`UV_*` 环境变量键值列表，底部是关闭（图标）/ 保存（整宽）。
-  uv 来源不读系统 PATH。
-- **镜像源弹窗**：内置清华 TUNA / 阿里云 / 中科大 / PyPI 官方；可新增、编辑、启用停用、设为默认。
-  只在**装包**（建环境 / 预装依赖）时生效，任务运行时不注入镜像变量。
-- **虚拟环境弹窗**：Python 版本（uv 下载到 `python\` 的解释器，可填版本下载）+ 托管环境
-  （`data\envs\<名称>`，从已下载版本里选 Python、可选预装包、查看已装包）。
+- **uv 配置弹窗**：顶部状态条（版本 / 可执行文件 / uv 下载与解释器镜像地址 / 解释器与环境变量数量）+ 按配置顺序排的三段。
+  ① **uv 可执行文件**：单选「程序目录 uv / 指定路径」——程序目录只展示路径、不可编辑，缺失时才出现「下载 uv」；
+  指定路径是可编辑输入框，右侧「浏览」（页面内文件浏览器挑 `uv.exe`，保存时校验能否运行）；下面是「下载镜像」
+  （GitHub Release 镜像根，uv 与解释器共用）；② **环境变量**：`UV_PYTHON_INSTALL_DIR` / `UV_CACHE_DIR` 决定目录，
+  `UV_PYTHON_INSTALL_MIRROR` 决定解释器下载源，这三项只能改值、不能删除（清空或重复会拦下保存），
+  其余 `UV_*` 变量可增删；③ **Python 解释器**：按上面配置的目录列出已下载版本，填版本号即下载。
+  底部关闭 / 保存设置；uv 来源不读系统 PATH。
+- **镜像源弹窗**：只放 PyPI 包索引镜像：内置清华 TUNA / 阿里云 / 中科大 / PyPI 官方；
+  可新增、编辑、启用停用、设为默认。包索引只在**装包**（建环境 / 预装依赖）时生效，任务运行时不注入镜像变量。
+  uv 自己的下载镜像不在这里，在 uv 配置弹窗里。
+- **虚拟环境弹窗**：只负责**使用**已下载的解释器创建托管环境
+  （`data\envs\<名称>`，从已下载版本里选 Python、可选预装包、查看已装包）；解释器下载入口在 uv 配置弹窗。
 - **设计系统**：按钮、输入框、表格、标签、分页、弹窗、Toast、排版全部来自
   `@stash/ui`（同级目录 `../stash-ui`，`file:` 依赖）；本仓库只保留页面级布局与
   业务块（三栏工作台、任务卡片、日志控制台、表单栅格）。
@@ -332,7 +346,7 @@ queued ──► running ──► succeeded / failed / timed_out / cancelled
 | `POST` | `/api/v1/cron/preview` | 计算未来若干次触发时间 |
 | `POST` | `/api/v1/python/venv` | 探测工作目录会关联的虚拟环境、uv 可用性与依赖文件 |
 | `POST` | `/api/v1/python/venv/create` | 用 uv 创建/同步项目 `.venv`（优先复用已有环境） |
-| `GET` | `/api/v1/system/directories?path=` | 列盘符或子文件夹（目录浏览器） |
+| `GET` | `/api/v1/system/directories?path=` | 列盘符或子文件夹（目录浏览器）；`include_files=true` 时一并返回文件 |
 | `GET` | `/api/v1/stats` | 仪表盘计数（总数/启用/运行中/三类数量） |
 | `GET` | `/api/v1/schedule` | 已启用任务的下次触发时间 |
 
@@ -352,8 +366,8 @@ queued ──► running ──► succeeded / failed / timed_out / cancelled
 | 方法 | 路径 | 说明 |
 | --- | --- | --- |
 | `GET` | `/api/v1/uv` | 当前 uv 来源、可执行文件、版本、`UV_*` 环境变量与解析后的 `python_dir` / `cache_dir`、两个路径变量的相对默认值 |
-| `PUT` | `/api/v1/uv` | 保存 uv 来源（`managed` / `custom`）、自定义路径和 `extra_env`；`custom` 会校验可运行 |
-| `POST` | `/api/v1/uv/download` | 从科大镜像下载当前架构的 uv、校验 sha256、安装到程序目录 `uv\` 并切换过去 |
+| `PUT` | `/api/v1/uv` | 保存 uv 来源（`managed` / `custom`）、自定义路径、`extra_env` 和下载镜像根（`mirror_url`，空 = 内置默认）；`custom` 会校验可运行 |
+| `POST` | `/api/v1/uv/download` | 从下载镜像取当前架构的 uv、校验 sha256、安装到程序目录 `uv\` 并切换过去 |
 
 ### 托管虚拟环境
 
@@ -397,6 +411,7 @@ Content-Type: application/json
 {
   "id": "sync_data",
   "name": "数据同步",
+  "description": "把上游数据同步到本地仓库，失败时记录日志",
   "cron": "0 0 2 * * *",
   "timezone": "Asia/Shanghai",
   "enabled": true,
@@ -447,7 +462,7 @@ Content-Type: application/json
 | `cron` | 可解析且存在未来触发点 |
 | `timezone` | 有效 IANA 名称 |
 | `timeout_secs` | 1–86400 |
-| `retry_policy` | `max_attempts ≤ 10`，`delay_secs ≤ 3600` |
+| `description` | ≤500 字符，可留空 |
 | `action.working_dir` / `script` | 非空 |
 | `action.language` | `python` / `shell` / `node` / `lua`；可省略，省略时按解释器推断 |
 | `action.interpreter` | 可空；空时按语言默认（Python 为 `python.exe`，Shell 为 `cmd.exe`，Node 为 `node.exe`，Lua 为 `lua.exe`） |
@@ -509,7 +524,7 @@ React (Vite) ──fetch──► Axum router ──security::api_guard(Origin +
 | `python_envs.rs` | 托管虚拟环境与 uv Python 版本：`data/envs` 扫描、创建/删除、已装包 |
 | `uv.rs` | uv 来源解析与校验、镜像下载（sha256）、`UV_*` 环境变量与路径默认值 |
 | `python_mirrors/` | PyPI 镜像的模型、校验、CRUD 与默认项事务 |
-| `directory_browser.rs` | 盘符与目录列举（页面内目录选择器） |
+| `directory_browser.rs` | 盘符与目录列举（页面内目录选择器，可选返回文件） |
 | `security.rs` | Origin 白名单、令牌校验、常量时间比较 |
 | `database.rs` | 连接池与迁移（WAL/busy_timeout） |
 
@@ -518,15 +533,14 @@ React (Vite) ──fetch──► Axum router ──security::api_guard(Origin +
 | 模块 | 职责 |
 | --- | --- |
 | `@stash/ui`（同级 `../stash-ui`） | 设计令牌与通用组件：按钮、输入、表格、标签、弹窗、分页、Toast、排版 |
-| `components/AppHeader.tsx` | 顶部品牌栏、引擎状态 |
-| `pages/TaskDashboard.tsx` | 三栏工作台：概览/调度、任务分组、uv/镜像/环境卡片与三个配置弹窗 |
-| `components/UvSettingsSection.tsx` | uv 弹窗内容：来源 chip、下载、`UV_*` 环境变量 |
-| `components/PythonRuntimeSection.tsx` | 虚拟环境弹窗内容：Python 版本列表与下载 |
-| `components/PythonEnvsSection.tsx` | 虚拟环境弹窗内容：环境列表、创建、已装包 |
+| `components/AppHeader.tsx` | 顶部品牌栏 |
+| `pages/TaskDashboard.tsx` | 三栏工作台：概览/调度、任务卡片、uv/镜像/环境卡片与三个配置弹窗 |
+| `components/UvSettingsModal.tsx` | uv 弹窗：状态条、来源选择、下载镜像、Python 解释器下载与列表、`UV_*` 环境变量 |
+| `components/PythonEnvsSection.tsx` | 虚拟环境弹窗：用已下载解释器创建环境、环境列表、已装包 |
 | `components/PythonMirrorsSection.tsx` | 镜像源弹窗内容：列表、默认项、新增 / 编辑 / 删除 |
 | `components/PythonMirrorModal.tsx` | 镜像表单（名称 / 索引地址 / 信任主机 / 启用） |
 | `components/TaskEditorModal.tsx` | 三类动态表单、Cron 预览、虚拟环境状态条 |
-| `components/DirectoryPickerDialog.tsx` | 页面内目录浏览器 |
+| `components/DirectoryPickerDialog.tsx` | 页面内目录浏览器（`mode="file"` 时为文件选择器，用于挑 `uv.exe`） |
 | `components/RunLogDrawer.tsx` | 运行历史、日志、取消、下载、SSE |
 | `components/LogViewer.tsx` | 日志虚拟滚动、跟随底部/回到最新 |
 | `lib/logLines.ts` | 增量日志的行缓冲（残行拼接、CRLF 归一） |
@@ -592,15 +606,12 @@ uv run --with fonttools --with brotli tools/build-fonts.py
 
 | 层 | 覆盖 |
 | --- | --- |
-| Rust 单元（73） | Cron、虚拟环境解析与探测、项目依赖文件扫描、uv 来源解析/校验/压缩包解压/`UV_*` 环境变量校验、托管环境名校验、PATH 注入去重、执行器（编码/截断/清理/句柄归属/日志合并推送）、安全、目录列举 |
-| Rust 集成（48） | 任务 CRUD 与校验、运行生命周期、取消与超时、日志分块、调度恢复、统计与调度接口、重启对账、镜像 CRUD、uv 设置读写与下载鉴权、托管环境校验与 404、venv 探测/创建、无环境运行提示、Shell 脚本执行 |
-| 前端 Vitest（37） | 三栏工作台渲染、保存 uv 来源与 `UV_*` 环境变量、镜像下载、Python 版本下载、托管环境创建与包列表、新建任务前先建虚拟环境、表单载荷与脚本语言、虚拟环境状态、uv 创建入口、目录浏览器、下次触发时间、日志行切分/窗口计算/虚拟滚动 |
+| Rust 单元（78） | Cron、虚拟环境解析与探测、项目依赖文件扫描、uv 来源解析/校验/压缩包解压/镜像地址派生/`UV_*` 环境变量校验、托管环境名校验、PATH 注入去重、执行器（编码/截断/清理/句柄归属/日志合并推送）、安全、目录列举 |
+| Rust 集成（50） | 任务 CRUD 与校验、运行生命周期、取消与超时、日志分块、调度恢复、统计与调度接口、重启对账、镜像 CRUD、uv 设置（含下载镜像）读写与下载鉴权、托管环境校验与 404、venv 探测/创建、无环境运行提示、Shell 脚本执行 |
+| 前端 Vitest（40） | 三栏工作台渲染、任务详情弹窗、uv 弹窗（保存来源与 `UV_*`、下载镜像、下载 uv、浏览选 `uv.exe`、下载 Python 版本）、镜像下载、托管环境创建与包列表、新建任务前先建虚拟环境、表单载荷与脚本语言、虚拟环境状态、uv 创建入口、目录浏览器、下次触发时间、日志行切分/窗口计算/虚拟滚动 |
 | Playwright（8） | 真实任务执行与日志、编辑/停用/删除、脚本语言切换、目录切换单状态、窄屏、**无外部网络渲染**、1500 行日志的虚拟滚动、镜像增删与设默认 |
 | Python 自检（14 项） | `tools/verify.py` 覆盖 API 全链路 |
 
-> 前端 Vitest 里 6 个用例仍在按已删除的顶部导航点击（uv / 虚拟环境相关），
-> 需要改成点右栏卡片并断言弹窗内容后才能全绿；改动停在 UI 调整阶段，尚未修。
-
 ---
 
 ## 故障排查
@@ -621,8 +632,7 @@ uv run --with fonttools --with brotli tools/build-fonts.py
 
 ## 已知限制
 
-- 自动重试尚未实现：`retry_policy` 只校验与存储。
-- 并发策略只有 `skip`；没有全局并发上限与队列。
+- 同一任务重叠触发时直接记为 `skipped`；没有全局并发上限与队列。
 - HTTP Action 只校验状态码，不支持响应体断言、认证方案或 Header 断言。
 - 敏感值脱敏基于变量名关键词与值替换，不是凭据保险箱。
 - Conda 环境不会自动激活，需要显式填写解释器路径。

backend/migrations/0001_create_tasks.sql

@@ -1,28 +0,0 @@
-CREATE TABLE IF NOT EXISTS tasks (
-    id TEXT PRIMARY KEY NOT NULL,
-    name TEXT NOT NULL,
-    cron TEXT NOT NULL,
-    timezone TEXT NOT NULL,
-    enabled INTEGER NOT NULL CHECK (enabled IN (0, 1)),
-    timeout_secs INTEGER NOT NULL CHECK (timeout_secs > 0),
-    concurrency_policy TEXT NOT NULL DEFAULT 'skip'
-        CHECK (concurrency_policy = 'skip'),
-    retry_max_attempts INTEGER NOT NULL DEFAULT 0
-        CHECK (retry_max_attempts >= 0),
-    retry_delay_secs INTEGER NOT NULL DEFAULT 0
-        CHECK (retry_delay_secs >= 0),
-    action_type TEXT NOT NULL
-        CHECK (action_type IN ('script', 'http', 'process')),
-    action_json TEXT NOT NULL,
-    created_at TEXT NOT NULL,
-    updated_at TEXT NOT NULL
-);
-
-CREATE INDEX IF NOT EXISTS idx_tasks_updated_at
-    ON tasks(updated_at DESC);
-
-CREATE INDEX IF NOT EXISTS idx_tasks_enabled
-    ON tasks(enabled);
-
-CREATE INDEX IF NOT EXISTS idx_tasks_action_type
-    ON tasks(action_type);

backend/migrations/0001_init.sql

@@ -0,0 +1,127 @@
+-- TaskPilot 基线结构：任务、运行记录、Python 镜像与 uv 设置。
+-- 这是全新起点（不再兼容旧库）：任务不再持久化并发/重试策略，运行触发只有定时与手动。
+
+CREATE TABLE IF NOT EXISTS tasks (
+    id TEXT PRIMARY KEY NOT NULL,
+    name TEXT NOT NULL,
+    description TEXT NOT NULL DEFAULT '',
+    cron TEXT NOT NULL,
+    timezone TEXT NOT NULL,
+    enabled INTEGER NOT NULL CHECK (enabled IN (0, 1)),
+    timeout_secs INTEGER NOT NULL CHECK (timeout_secs > 0),
+    action_type TEXT NOT NULL
+        CHECK (action_type IN ('script', 'http', 'process')),
+    action_json TEXT NOT NULL,
+    created_at TEXT NOT NULL,
+    updated_at TEXT NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS idx_tasks_updated_at
+    ON tasks(updated_at DESC);
+
+CREATE INDEX IF NOT EXISTS idx_tasks_enabled
+    ON tasks(enabled);
+
+CREATE INDEX IF NOT EXISTS idx_tasks_action_type
+    ON tasks(action_type);
+
+CREATE TABLE IF NOT EXISTS task_runs (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    task_id TEXT NOT NULL REFERENCES tasks(id) ON DELETE CASCADE,
+    trigger_type TEXT NOT NULL
+        CHECK (trigger_type IN ('schedule', 'manual')),
+    status TEXT NOT NULL
+        CHECK (status IN (
+            'queued', 'running', 'succeeded', 'failed',
+            'timed_out', 'cancelled', 'skipped'
+        )),
+    started_at TEXT,
+    finished_at TEXT,
+    duration_ms INTEGER,
+    exit_code INTEGER,
+    error_message TEXT,
+    created_at TEXT NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS idx_task_runs_task_created
+    ON task_runs(task_id, created_at DESC);
+
+CREATE INDEX IF NOT EXISTS idx_task_runs_status
+    ON task_runs(status);
+
+CREATE TABLE IF NOT EXISTS python_mirrors (
+    id TEXT PRIMARY KEY NOT NULL,
+    name TEXT NOT NULL,
+    index_url TEXT NOT NULL,
+    trusted_host TEXT,
+    enabled INTEGER NOT NULL DEFAULT 1 CHECK (enabled IN (0, 1)),
+    is_default INTEGER NOT NULL DEFAULT 0 CHECK (is_default IN (0, 1)),
+    created_at TEXT NOT NULL,
+    updated_at TEXT NOT NULL
+);
+
+-- 同一时间只允许一个默认镜像
+CREATE UNIQUE INDEX IF NOT EXISTS idx_python_mirrors_default
+    ON python_mirrors(is_default)
+    WHERE is_default = 1;
+
+CREATE UNIQUE INDEX IF NOT EXISTS idx_python_mirrors_index_url
+    ON python_mirrors(index_url);
+
+INSERT OR IGNORE INTO python_mirrors
+    (id, name, index_url, trusted_host, enabled, is_default, created_at, updated_at)
+VALUES
+    (
+        'tsinghua',
+        '清华 TUNA',
+        'https://pypi.tuna.tsinghua.edu.cn/simple',
+        NULL,
+        1,
+        1,
+        strftime('%Y-%m-%dT%H:%M:%fZ', 'now'),
+        strftime('%Y-%m-%dT%H:%M:%fZ', 'now')
+    ),
+    (
+        'aliyun',
+        '阿里云',
+        'https://mirrors.aliyun.com/pypi/simple/',
+        NULL,
+        1,
+        0,
+        strftime('%Y-%m-%dT%H:%M:%fZ', 'now'),
+        strftime('%Y-%m-%dT%H:%M:%fZ', 'now')
+    ),
+    (
+        'ustc',
+        '中科大',
+        'https://pypi.mirrors.ustc.edu.cn/simple/',
+        NULL,
+        1,
+        0,
+        strftime('%Y-%m-%dT%H:%M:%fZ', 'now'),
+        strftime('%Y-%m-%dT%H:%M:%fZ', 'now')
+    ),
+    (
+        'pypi',
+        'PyPI 官方',
+        'https://pypi.org/simple',
+        NULL,
+        1,
+        0,
+        strftime('%Y-%m-%dT%H:%M:%fZ', 'now'),
+        strftime('%Y-%m-%dT%H:%M:%fZ', 'now')
+    );
+
+-- uv 只认平台自带的副本（程序目录 uv）或用户指定的路径，不再读系统 PATH。
+-- extra_env / mirror_url 分别存额外的 UV_* 环境变量和下载镜像。
+CREATE TABLE IF NOT EXISTS uv_settings (
+    id INTEGER PRIMARY KEY CHECK (id = 1),
+    source TEXT NOT NULL CHECK (source IN ('managed', 'custom')),
+    custom_path TEXT,
+    extra_env TEXT NOT NULL DEFAULT '{}',
+    mirror_url TEXT,
+    updated_at TEXT NOT NULL
+);
+
+INSERT OR IGNORE INTO uv_settings (id, source, custom_path, extra_env, updated_at)
+VALUES (1, 'managed', NULL, '{}', strftime('%Y-%m-%dT%H:%M:%fZ', 'now'));

backend/migrations/0002_create_task_runs.sql

@@ -1,23 +0,0 @@
-CREATE TABLE IF NOT EXISTS task_runs (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    task_id TEXT NOT NULL REFERENCES tasks(id) ON DELETE CASCADE,
-    trigger_type TEXT NOT NULL
-        CHECK (trigger_type IN ('schedule', 'manual', 'retry')),
-    status TEXT NOT NULL
-        CHECK (status IN (
-            'queued', 'running', 'succeeded', 'failed',
-            'timed_out', 'cancelled', 'skipped'
-        )),
-    started_at TEXT,
-    finished_at TEXT,
-    duration_ms INTEGER,
-    exit_code INTEGER,
-    error_message TEXT,
-    created_at TEXT NOT NULL
-);
-
-CREATE INDEX IF NOT EXISTS idx_task_runs_task_created
-    ON task_runs(task_id, created_at DESC);
-
-CREATE INDEX IF NOT EXISTS idx_task_runs_status
-    ON task_runs(status);

backend/migrations/0003_create_python_mirrors.sql

@@ -1,62 +0,0 @@
-CREATE TABLE IF NOT EXISTS python_mirrors (
-    id TEXT PRIMARY KEY NOT NULL,
-    name TEXT NOT NULL,
-    index_url TEXT NOT NULL,
-    trusted_host TEXT,
-    enabled INTEGER NOT NULL DEFAULT 1 CHECK (enabled IN (0, 1)),
-    is_default INTEGER NOT NULL DEFAULT 0 CHECK (is_default IN (0, 1)),
-    created_at TEXT NOT NULL,
-    updated_at TEXT NOT NULL
-);
-
--- 同一时间只允许一个默认镜像
-CREATE UNIQUE INDEX IF NOT EXISTS idx_python_mirrors_default
-    ON python_mirrors(is_default)
-    WHERE is_default = 1;
-
-CREATE UNIQUE INDEX IF NOT EXISTS idx_python_mirrors_index_url
-    ON python_mirrors(index_url);
-
-INSERT OR IGNORE INTO python_mirrors
-    (id, name, index_url, trusted_host, enabled, is_default, created_at, updated_at)
-VALUES
-    (
-        'tsinghua',
-        '清华 TUNA',
-        'https://pypi.tuna.tsinghua.edu.cn/simple',
-        NULL,
-        1,
-        1,
-        strftime('%Y-%m-%dT%H:%M:%fZ', 'now'),
-        strftime('%Y-%m-%dT%H:%M:%fZ', 'now')
-    ),
-    (
-        'aliyun',
-        '阿里云',
-        'https://mirrors.aliyun.com/pypi/simple/',
-        NULL,
-        1,
-        0,
-        strftime('%Y-%m-%dT%H:%M:%fZ', 'now'),
-        strftime('%Y-%m-%dT%H:%M:%fZ', 'now')
-    ),
-    (
-        'ustc',
-        '中科大',
-        'https://pypi.mirrors.ustc.edu.cn/simple/',
-        NULL,
-        1,
-        0,
-        strftime('%Y-%m-%dT%H:%M:%fZ', 'now'),
-        strftime('%Y-%m-%dT%H:%M:%fZ', 'now')
-    ),
-    (
-        'pypi',
-        'PyPI 官方',
-        'https://pypi.org/simple',
-        NULL,
-        1,
-        0,
-        strftime('%Y-%m-%dT%H:%M:%fZ', 'now'),
-        strftime('%Y-%m-%dT%H:%M:%fZ', 'now')
-    );

backend/migrations/0004_create_uv_settings.sql

@@ -1,11 +0,0 @@
--- uv 可执行文件来自哪里：系统 PATH（system）、程序目录下的 uv 目录（managed），
--- 或用户自己下载后指定的路径（custom）。只保留一行。
-CREATE TABLE IF NOT EXISTS uv_settings (
-    id INTEGER PRIMARY KEY CHECK (id = 1),
-    source TEXT NOT NULL DEFAULT 'system' CHECK (source IN ('system', 'managed', 'custom')),
-    custom_path TEXT,
-    updated_at TEXT NOT NULL
-);
-
-INSERT OR IGNORE INTO uv_settings (id, source, custom_path, updated_at)
-VALUES (1, 'system', NULL, strftime('%Y-%m-%dT%H:%M:%fZ', 'now'));

backend/migrations/0005_uv_settings_drop_system_source.sql

@@ -1,21 +0,0 @@
--- uv 只认平台自己的副本（程序目录 uv）或用户指定的路径，不再读系统 PATH。
-CREATE TABLE uv_settings_v2 (
-    id INTEGER PRIMARY KEY CHECK (id = 1),
-    source TEXT NOT NULL CHECK (source IN ('managed', 'custom')),
-    custom_path TEXT,
-    updated_at TEXT NOT NULL
-);
-
-INSERT INTO uv_settings_v2 (id, source, custom_path, updated_at)
-SELECT id,
-       CASE WHEN source = 'custom' THEN 'custom' ELSE 'managed' END,
-       custom_path,
-       updated_at
-FROM uv_settings;
-
-DROP TABLE uv_settings;
-
-ALTER TABLE uv_settings_v2 RENAME TO uv_settings;
-
-INSERT OR IGNORE INTO uv_settings (id, source, custom_path, updated_at)
-VALUES (1, 'managed', NULL, strftime('%Y-%m-%dT%H:%M:%fZ', 'now'));

backend/migrations/0006_uv_settings_extra_env.sql

@@ -1,2 +0,0 @@
--- uv 管理页允许额外注入 UV_* 环境变量（缓存目录、Python 安装目录、超时等）。
-ALTER TABLE uv_settings ADD COLUMN extra_env TEXT NOT NULL DEFAULT '{}';

backend/src/api.rs

@@ -45,9 +45,8 @@ use crate::{
     state::AppState,
     tasks::{
         model::{
-            ConcurrencyPolicy, CreateTaskRequest, HttpMethod, RetryPolicy, ScheduledTaskResponse,
-            ScriptLanguage, TaskAction, TaskActionType, TaskListResponse, TaskResponse,
-            TaskStatsResponse, UpdateTaskRequest,
+            CreateTaskRequest, HttpMethod, ScheduledTaskResponse, ScriptLanguage, TaskAction,
+            TaskActionType, TaskListResponse, TaskResponse, TaskStatsResponse, UpdateTaskRequest,
         },
         routes::{
             __path_create_task, __path_delete_task, __path_disable_task, __path_enable_task,
@@ -194,7 +193,7 @@ pub async fn create_python_venv(
     tag = "system",
     params(ListDirectoriesQuery),
     responses(
-        (status = 200, description = "Subdirectories of the requested path, or the drive list", body = DirectoryListingResponse),
+        (status = 200, description = "Subdirectories of the requested path (plus files when `include_files=true`), or the drive list", body = DirectoryListingResponse),
         (status = 400, description = "The path is not an existing absolute directory", body = ErrorResponse)
     )
 )]
@@ -336,8 +335,6 @@ pub async fn list_schedule(
         TaskActionType,
         ScriptLanguage,
         HttpMethod,
-        ConcurrencyPolicy,
-        RetryPolicy,
         TaskAction,
         CreateTaskRequest,
         UpdateTaskRequest,

backend/src/directory_browser.rs

@@ -14,6 +14,9 @@ pub const MAX_ENTRIES: usize = 500;
 pub struct ListDirectoriesQuery {
     /// 绝对目录路径；留空表示列出盘符
     pub path: Option<String>,
+    /// 是否一并返回文件（挑选可执行文件时用）；默认只返回目录
+    #[serde(default)]
+    pub include_files: Option<bool>,
 }
 
 #[derive(Debug, Serialize, ToSchema)]
@@ -22,6 +25,8 @@ pub struct DirectoryEntry {
     pub name: String,
     /// 绝对路径，选中后回填到表单
     pub path: String,
+    /// true 表示目录（可继续进入），false 表示文件（`include_files` 时才出现）
+    pub is_dir: bool,
 }
 
 #[derive(Debug, Serialize, ToSchema)]
@@ -79,6 +84,7 @@ pub fn list_directories(
         DirectoryError::Unreadable(format!("无法读取目录 {}: {error}", directory.display()))
     })?;
 
+    let include_files = query.include_files.unwrap_or(false);
     let mut entries = Vec::new();
     let mut truncated = false;
     for entry in reader.flatten() {
@@ -87,19 +93,26 @@ pub fn list_directories(
             .file_type()
             .map(|kind| kind.is_dir())
             .unwrap_or_else(|_| entry_path.is_dir());
-        if !is_directory {
+        if !is_directory && !include_files {
             continue;
         }
         entries.push(DirectoryEntry {
             name: entry.file_name().to_string_lossy().into_owned(),
             path: entry_path.to_string_lossy().into_owned(),
+            is_dir: is_directory,
         });
         if entries.len() >= MAX_ENTRIES {
             truncated = true;
             break;
         }
     }
-    entries.sort_by_key(|entry| entry.name.to_lowercase());
+    // 目录在前、文件在后，各自按名称排序：挑选文件时不用在一堆文件里找文件夹。
+    entries.sort_by(|left, right| {
+        right
+            .is_dir
+            .cmp(&left.is_dir)
+            .then_with(|| left.name.to_lowercase().cmp(&right.name.to_lowercase()))
+    });
 
     Ok(DirectoryListingResponse {
         path: Some(directory.to_string_lossy().into_owned()),
@@ -126,6 +139,7 @@ fn logical_drives() -> Vec<DirectoryEntry> {
             DirectoryEntry {
                 name: format!("{letter}:\\"),
                 path: format!("{letter}:\\"),
+                is_dir: true,
             }
         })
         .collect()
@@ -136,6 +150,7 @@ fn logical_drives() -> Vec<DirectoryEntry> {
     vec![DirectoryEntry {
         name: "/".to_owned(),
         path: "/".to_owned(),
+        is_dir: true,
     }]
 }
 
@@ -146,6 +161,14 @@ mod tests {
     fn query(path: Option<&str>) -> ListDirectoriesQuery {
         ListDirectoriesQuery {
             path: path.map(str::to_owned),
+            include_files: None,
+        }
+    }
+
+    fn query_with_files(path: Option<&str>) -> ListDirectoriesQuery {
+        ListDirectoriesQuery {
+            path: path.map(str::to_owned),
+            include_files: Some(true),
         }
     }
 
@@ -164,6 +187,7 @@ mod tests {
             .map(|entry| entry.name.as_str())
             .collect::<Vec<_>>();
         assert_eq!(names, vec!["Alpha", "zeta"]);
+        assert!(listing.entries.iter().all(|entry| entry.is_dir));
         assert_eq!(
             listing.parent.as_deref(),
             Some(temp.path().parent().unwrap().to_str().unwrap())
@@ -171,6 +195,26 @@ mod tests {
         assert!(!listing.truncated);
     }
 
+    #[test]
+    fn lists_files_when_requested_after_directories() {
+        let temp = tempfile::TempDir::new().unwrap();
+        fs::create_dir(temp.path().join("bin")).unwrap();
+        fs::write(temp.path().join("zeta.exe"), "x").unwrap();
+        fs::write(temp.path().join("Alpha.txt"), "x").unwrap();
+
+        let listing =
+            list_directories(&query_with_files(Some(temp.path().to_str().unwrap()))).unwrap();
+
+        let names = listing
+            .entries
+            .iter()
+            .map(|entry| entry.name.as_str())
+            .collect::<Vec<_>>();
+        assert_eq!(names, vec!["bin", "Alpha.txt", "zeta.exe"]);
+        assert!(listing.entries[0].is_dir);
+        assert!(listing.entries[1..].iter().all(|entry| !entry.is_dir));
+    }
+
     #[test]
     fn returns_absolute_paths_for_entries() {
         let temp = tempfile::TempDir::new().unwrap();

backend/src/runs/model.rs

@@ -7,7 +7,6 @@ use utoipa::{IntoParams, ToSchema};
 pub enum RunTrigger {
     Schedule,
     Manual,
-    Retry,
 }
 
 impl RunTrigger {
@@ -15,7 +14,6 @@ impl RunTrigger {
         match self {
             Self::Schedule => "schedule",
             Self::Manual => "manual",
-            Self::Retry => "retry",
         }
     }
 }

backend/src/runs/repository.rs

@@ -255,7 +255,6 @@ fn parse_trigger(value: &str) -> ApiResult<RunTrigger> {
     match value {
         "schedule" => Ok(RunTrigger::Schedule),
         "manual" => Ok(RunTrigger::Manual),
-        "retry" => Ok(RunTrigger::Retry),
         _ => Err(ApiError::internal(format!("unknown run trigger: {value}"))),
     }
 }

backend/src/scheduler.rs

@@ -198,7 +198,7 @@ fn lock_next_runs(
 mod tests {
     use chrono::{TimeZone, Timelike};
 
-    use crate::tasks::model::{ConcurrencyPolicy, RetryPolicy, ScriptLanguage, TaskAction};
+    use crate::tasks::model::{ScriptLanguage, TaskAction};
 
     use super::*;
 
@@ -206,12 +206,11 @@ mod tests {
         TaskResponse {
             id: "schedule_test".to_owned(),
             name: "Schedule test".to_owned(),
+            description: String::new(),
             cron: cron.to_owned(),
             timezone: timezone.to_owned(),
             enabled: true,
             timeout_secs: 30,
-            concurrency_policy: ConcurrencyPolicy::Skip,
-            retry_policy: RetryPolicy::default(),
             action: TaskAction::Script {
                 working_dir: ".".to_owned(),
                 venv: None,

backend/src/tasks/model.rs

@@ -84,22 +84,6 @@ pub enum HttpMethod {
     Post,
 }
 
-#[derive(Debug, Clone, Copy, Default, PartialEq, Eq, Serialize, Deserialize, ToSchema)]
-#[serde(rename_all = "snake_case")]
-pub enum ConcurrencyPolicy {
-    #[default]
-    Skip,
-}
-
-#[derive(Debug, Clone, Default, Serialize, Deserialize, ToSchema)]
-#[serde(deny_unknown_fields)]
-pub struct RetryPolicy {
-    #[serde(default)]
-    pub max_attempts: u32,
-    #[serde(default)]
-    pub delay_secs: u64,
-}
-
 #[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
 #[serde(tag = "type", rename_all = "snake_case", deny_unknown_fields)]
 pub enum TaskAction {
@@ -176,6 +160,9 @@ const fn default_timeout_secs() -> u64 {
 pub struct CreateTaskRequest {
     pub id: String,
     pub name: String,
+    /// 一句话说明，展示在任务卡片和详情里
+    #[serde(default)]
+    pub description: String,
     pub cron: String,
     #[serde(default = "default_timezone")]
     pub timezone: String,
@@ -183,10 +170,6 @@ pub struct CreateTaskRequest {
     pub enabled: bool,
     #[serde(default = "default_timeout_secs")]
     pub timeout_secs: u64,
-    #[serde(default)]
-    pub concurrency_policy: ConcurrencyPolicy,
-    #[serde(default)]
-    pub retry_policy: RetryPolicy,
     pub action: TaskAction,
 }
 
@@ -194,6 +177,9 @@ pub struct CreateTaskRequest {
 #[serde(deny_unknown_fields)]
 pub struct UpdateTaskRequest {
     pub name: String,
+    /// 一句话说明，展示在任务卡片和详情里
+    #[serde(default)]
+    pub description: String,
     pub cron: String,
     #[serde(default = "default_timezone")]
     pub timezone: String,
@@ -201,10 +187,6 @@ pub struct UpdateTaskRequest {
     pub enabled: bool,
     #[serde(default = "default_timeout_secs")]
     pub timeout_secs: u64,
-    #[serde(default)]
-    pub concurrency_policy: ConcurrencyPolicy,
-    #[serde(default)]
-    pub retry_policy: RetryPolicy,
     pub action: TaskAction,
 }
 
@@ -212,12 +194,12 @@ pub struct UpdateTaskRequest {
 pub struct TaskResponse {
     pub id: String,
     pub name: String,
+    /// 一句话说明
+    pub description: String,
     pub cron: String,
     pub timezone: String,
     pub enabled: bool,
     pub timeout_secs: u64,
-    pub concurrency_policy: ConcurrencyPolicy,
-    pub retry_policy: RetryPolicy,
     pub action: TaskAction,
     pub created_at: DateTime<Utc>,
     pub updated_at: DateTime<Utc>,

backend/src/tasks/repository.rs

@@ -4,15 +4,14 @@ use sqlx::{FromRow, QueryBuilder, Sqlite, SqlitePool};
 use crate::{
     error::{ApiError, ApiResult},
     tasks::model::{
-        ConcurrencyPolicy, CreateTaskRequest, RetryPolicy, TaskAction, TaskActionType,
-        TaskListResponse, TaskResponse, UpdateTaskRequest,
+        CreateTaskRequest, TaskAction, TaskActionType, TaskListResponse, TaskResponse,
+        UpdateTaskRequest,
     },
 };
 
 const TASK_COLUMNS: &str = "
-    id, name, cron, timezone, enabled, timeout_secs, concurrency_policy,
-    retry_max_attempts, retry_delay_secs, action_type, action_json,
-    created_at, updated_at
+    id, name, description, cron, timezone, enabled, timeout_secs,
+    action_type, action_json, created_at, updated_at
 ";
 
 #[derive(Debug, Clone, Copy, Default)]
@@ -59,13 +58,11 @@ pub struct ListFilters {
 struct TaskRow {
     id: String,
     name: String,
+    description: String,
     cron: String,
     timezone: String,
     enabled: bool,
     timeout_secs: i64,
-    concurrency_policy: String,
-    retry_max_attempts: i64,
-    retry_delay_secs: i64,
     action_type: String,
     action_json: String,
     created_at: DateTime<Utc>,
@@ -76,13 +73,6 @@ impl TryFrom<TaskRow> for TaskResponse {
     type Error = ApiError;
 
     fn try_from(row: TaskRow) -> Result<Self, Self::Error> {
-        if row.concurrency_policy != "skip" {
-            return Err(ApiError::internal(format!(
-                "unknown concurrency policy: {}",
-                row.concurrency_policy
-            )));
-        }
-
         let action: TaskAction = serde_json::from_str(&row.action_json)?;
         if row.action_type != action.action_type().as_str() {
             return Err(ApiError::internal(format!(
@@ -94,15 +84,11 @@ impl TryFrom<TaskRow> for TaskResponse {
         Ok(Self {
             id: row.id,
             name: row.name,
+            description: row.description,
             cron: row.cron,
             timezone: row.timezone,
             enabled: row.enabled,
             timeout_secs: u64::try_from(row.timeout_secs).map_err(ApiError::internal)?,
-            concurrency_policy: ConcurrencyPolicy::Skip,
-            retry_policy: RetryPolicy {
-                max_attempts: u32::try_from(row.retry_max_attempts).map_err(ApiError::internal)?,
-                delay_secs: u64::try_from(row.retry_delay_secs).map_err(ApiError::internal)?,
-            },
             action,
             created_at: row.created_at,
             updated_at: row.updated_at,
@@ -115,20 +101,17 @@ pub async fn create(pool: &SqlitePool, request: &CreateTaskRequest) -> ApiResult
     let action_json = serde_json::to_string(&request.action)?;
     let result = sqlx::query(
         "INSERT INTO tasks (
-            id, name, cron, timezone, enabled, timeout_secs, concurrency_policy,
-            retry_max_attempts, retry_delay_secs, action_type, action_json,
-            created_at, updated_at
-        ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
+            id, name, description, cron, timezone, enabled, timeout_secs,
+            action_type, action_json, created_at, updated_at
+        ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
     )
     .bind(&request.id)
     .bind(&request.name)
+    .bind(&request.description)
     .bind(&request.cron)
     .bind(&request.timezone)
     .bind(request.enabled)
     .bind(request.timeout_secs as i64)
-    .bind("skip")
-    .bind(i64::from(request.retry_policy.max_attempts))
-    .bind(request.retry_policy.delay_secs as i64)
     .bind(request.action.action_type().as_str())
     .bind(action_json)
     .bind(now)
@@ -149,12 +132,11 @@ pub async fn create(pool: &SqlitePool, request: &CreateTaskRequest) -> ApiResult
     Ok(TaskResponse {
         id: request.id.clone(),
         name: request.name.clone(),
+        description: request.description.clone(),
         cron: request.cron.clone(),
         timezone: request.timezone.clone(),
         enabled: request.enabled,
         timeout_secs: request.timeout_secs,
-        concurrency_policy: request.concurrency_policy,
-        retry_policy: request.retry_policy.clone(),
         action: request.action.clone(),
         created_at: now,
         updated_at: now,
@@ -164,9 +146,8 @@ pub async fn create(pool: &SqlitePool, request: &CreateTaskRequest) -> ApiResult
 pub async fn get(pool: &SqlitePool, id: &str) -> ApiResult<Option<TaskResponse>> {
     let row = sqlx::query_as::<_, TaskRow>(
         "SELECT
-            id, name, cron, timezone, enabled, timeout_secs, concurrency_policy,
-            retry_max_attempts, retry_delay_secs, action_type, action_json,
-            created_at, updated_at
+            id, name, description, cron, timezone, enabled, timeout_secs,
+            action_type, action_json, created_at, updated_at
         FROM tasks
         WHERE id = ?",
     )
@@ -186,19 +167,16 @@ pub async fn update(
     let action_json = serde_json::to_string(&request.action)?;
     let result = sqlx::query(
         "UPDATE tasks SET
-            name = ?, cron = ?, timezone = ?, enabled = ?, timeout_secs = ?,
-            concurrency_policy = ?, retry_max_attempts = ?, retry_delay_secs = ?,
+            name = ?, description = ?, cron = ?, timezone = ?, enabled = ?, timeout_secs = ?,
             action_type = ?, action_json = ?, updated_at = ?
         WHERE id = ?",
     )
     .bind(&request.name)
+    .bind(&request.description)
     .bind(&request.cron)
     .bind(&request.timezone)
     .bind(request.enabled)
     .bind(request.timeout_secs as i64)
-    .bind("skip")
-    .bind(i64::from(request.retry_policy.max_attempts))
-    .bind(request.retry_policy.delay_secs as i64)
     .bind(request.action.action_type().as_str())
     .bind(action_json)
     .bind(now)
@@ -269,9 +247,8 @@ pub async fn list(pool: &SqlitePool, filters: &ListFilters) -> ApiResult<TaskLis
 pub async fn list_enabled_tasks(pool: &SqlitePool) -> ApiResult<Vec<TaskResponse>> {
     let rows = sqlx::query_as::<_, TaskRow>(
         "SELECT
-            id, name, cron, timezone, enabled, timeout_secs, concurrency_policy,
-            retry_max_attempts, retry_delay_secs, action_type, action_json,
-            created_at, updated_at
+            id, name, description, cron, timezone, enabled, timeout_secs,
+            action_type, action_json, created_at, updated_at
         FROM tasks
         WHERE enabled = 1
         ORDER BY updated_at DESC, id ASC",

backend/src/tasks/service.rs

@@ -14,6 +14,7 @@ use super::repository::{self, ListFilters};
 
 const MAX_TASK_ID_LEN: usize = 64;
 const MAX_TASK_NAME_LEN: usize = 120;
+const MAX_DESCRIPTION_LEN: usize = 500;
 const MAX_TIMEOUT_SECS: u64 = 86_400;
 const MAX_ARGS: usize = 256;
 const MAX_ARG_LEN: usize = 2_048;
@@ -26,17 +27,18 @@ const MAX_PAGE_SIZE: u32 = 100;
 
 pub async fn create(pool: &SqlitePool, mut request: CreateTaskRequest) -> ApiResult<TaskResponse> {
     request.name = request.name.trim().to_owned();
+    request.description = request.description.trim().to_owned();
     request.cron = request.cron.trim().to_owned();
     request.timezone = request.timezone.trim().to_owned();
     normalize_action(&mut request.action);
 
     validate_task_id(&request.id)?;
+    validate_description(&request.description)?;
     validate_common(
         &request.name,
         &request.cron,
         &request.timezone,
         request.timeout_secs,
-        &request.retry_policy,
     )?;
     validate_action(&request.action)?;
 
@@ -56,16 +58,17 @@ pub async fn update(
 ) -> ApiResult<TaskResponse> {
     validate_task_id(id)?;
     request.name = request.name.trim().to_owned();
+    request.description = request.description.trim().to_owned();
     request.cron = request.cron.trim().to_owned();
     request.timezone = request.timezone.trim().to_owned();
     normalize_action(&mut request.action);
 
+    validate_description(&request.description)?;
     validate_common(
         &request.name,
         &request.cron,
         &request.timezone,
         request.timeout_secs,
-        &request.retry_policy,
     )?;
     validate_action(&request.action)?;
 
@@ -131,12 +134,21 @@ fn validate_task_id(id: &str) -> ApiResult<()> {
     Ok(())
 }
 
+fn validate_description(description: &str) -> ApiResult<()> {
+    if description.chars().count() > MAX_DESCRIPTION_LEN {
+        return Err(crate::error::ApiError::validation(
+            "description",
+            format!("任务说明不能超过 {MAX_DESCRIPTION_LEN} 个字符"),
+        ));
+    }
+    Ok(())
+}
+
 fn validate_common(
     name: &str,
     cron_expression: &str,
     timezone: &str,
     timeout_secs: u64,
-    retry_policy: &RetryPolicy,
 ) -> ApiResult<()> {
     if name.is_empty() || name.chars().count() > MAX_TASK_NAME_LEN {
         return Err(crate::error::ApiError::validation(
@@ -150,18 +162,6 @@ fn validate_common(
             format!("超时时间必须在 1 到 {MAX_TIMEOUT_SECS} 秒之间"),
         ));
     }
-    if retry_policy.max_attempts > 10 {
-        return Err(crate::error::ApiError::validation(
-            "retry_policy.max_attempts",
-            "最大重试次数不能超过 10",
-        ));
-    }
-    if retry_policy.delay_secs > 3_600 {
-        return Err(crate::error::ApiError::validation(
-            "retry_policy.delay_secs",
-            "重试间隔不能超过 3600 秒",
-        ));
-    }
 
     Tz::from_str(timezone).map_err(|_| {
         crate::error::ApiError::validation("timezone", "时区必须是有效的 IANA 时区名称")
@@ -371,7 +371,6 @@ mod tests {
             "0 0 2 * * *",
             "Asia/Shanghai",
             300,
-            &RetryPolicy::default(),
         )
         .expect("task fields should be valid");
         validate_action(&script_action()).expect("script action should be valid");
@@ -384,7 +383,6 @@ mod tests {
             "*/0 * * * * *",
             "Asia/Shanghai",
             300,
-            &RetryPolicy::default(),
         )
         .expect_err("invalid cron should fail");
 

backend/src/uv.rs

@@ -15,6 +15,7 @@ use chrono::Utc;
 use serde::{Deserialize, Serialize};
 use sha2::{Digest, Sha256};
 use sqlx::SqlitePool;
+use url::Url;
 use utoipa::ToSchema;
 use uuid::Uuid;
 
@@ -32,11 +33,17 @@ const PYTHON_DIR_DEFAULT: &str = "python";
 const CACHE_DIR_DEFAULT: &str = "uv-cache";
 const PYTHON_INSTALL_DIR_ENV: &str = "UV_PYTHON_INSTALL_DIR";
 const CACHE_DIR_ENV: &str = "UV_CACHE_DIR";
-/// 没有本机 uv 时从这里下载（中科大维护的 GitHub Release 镜像）。
-const UV_MIRROR: &str = "https://mirrors.ustc.edu.cn/github-release/astral-sh/uv/LatestRelease";
+const PYTHON_MIRROR_ENV: &str = "UV_PYTHON_INSTALL_MIRROR";
+/// 内置的 uv 下载镜像根（中科大维护的 GitHub Release 镜像）；可在「镜像源」里改成别的镜像。
+const DEFAULT_MIRROR_BASE: &str = "https://mirrors.ustc.edu.cn/github-release";
+/// 镜像根下 uv 自己的发布目录。
+const UV_RELEASE_PATH: &str = "astral-sh/uv/LatestRelease";
+/// 镜像根下 python-build-standalone 的发布目录（uv 的 `UV_PYTHON_INSTALL_MIRROR`）。
+const PYTHON_RELEASE_PATH: &str = "astral-sh/python-build-standalone/releases/download";
 const MAX_UV_ARCHIVE_BYTES: u64 = 200 * 1024 * 1024;
 const MAX_UV_ENV_ENTRIES: usize = 32;
 const MAX_UV_ENV_VALUE_CHARS: usize = 512;
+const MAX_MIRROR_URL_CHARS: usize = 2048;
 
 /// uv 从哪里来。只用平台自己认的副本，不读系统 PATH：PATH 上的版本和可用性
 /// 会随启动方式变化，不适合当调度器的隐式依赖。
@@ -72,6 +79,8 @@ pub struct UvSettings {
     pub source: UvSource,
     pub custom_path: Option<String>,
     pub extra_env: BTreeMap<String, String>,
+    /// uv 与 Python 解释器的下载镜像根（GitHub Release 镜像）；空 = 内置默认镜像
+    pub mirror_url: Option<String>,
 }
 
 impl Default for UvSettings {
@@ -80,6 +89,7 @@ impl Default for UvSettings {
             source: UvSource::Managed,
             custom_path: None,
             extra_env: BTreeMap::new(),
+            mirror_url: None,
         }
     }
 }
@@ -99,8 +109,15 @@ impl UvSettings {
 
     /// 注入给 uv 的环境变量：两个路径变量没配时用相对默认值（`python` / `uv-cache`），
     /// 注入前统一解析成绝对路径——uv 的 cwd 会变，相对路径不能直接交给它。
+    /// 解释器的下载镜像同理：用户没在 `UV_*` 里覆盖时，注入镜像源派生出的地址。
     pub fn env(&self) -> BTreeMap<String, String> {
         let mut env = self.extra_env.clone();
+        if !env
+            .keys()
+            .any(|key| key.eq_ignore_ascii_case(PYTHON_MIRROR_ENV))
+        {
+            env.insert(PYTHON_MIRROR_ENV.to_owned(), self.python_mirror_url());
+        }
         for (key, default) in UV_PATH_DEFAULTS {
             let value = env
                 .get(key)
@@ -114,6 +131,27 @@ impl UvSettings {
         env
     }
 
+    /// uv 与 Python 解释器的下载镜像根（去掉结尾斜杠）；没配就用内置默认。
+    pub fn mirror_base(&self) -> String {
+        self.mirror_url
+            .as_deref()
+            .map(str::trim)
+            .filter(|value| !value.is_empty())
+            .unwrap_or(DEFAULT_MIRROR_BASE)
+            .trim_end_matches('/')
+            .to_owned()
+    }
+
+    /// uv 自己那个压缩包的下载地址前缀。
+    pub fn uv_download_base(&self) -> String {
+        format!("{}/{}", self.mirror_base(), UV_RELEASE_PATH)
+    }
+
+    /// `UV_PYTHON_INSTALL_MIRROR`：uv 下载 Python 解释器的地址前缀。
+    pub fn python_mirror_url(&self) -> String {
+        format!("{}/{}", self.mirror_base(), PYTHON_RELEASE_PATH)
+    }
+
     /// uv 下载 Python 的目录（解析后的绝对路径）。
     pub fn python_install_dir(&self) -> PathBuf {
         let value = self
@@ -244,13 +282,13 @@ fn install_archive(archive: &[u8], managed: &Path) -> Result<String, String> {
 }
 
 /// 从镜像下载当前架构的 uv，校验 sha256 后安装到程序目录的 `uv` 文件夹。
-async fn download_and_install() -> Result<String, String> {
+async fn download_and_install(base: &str) -> Result<String, String> {
     let client = reqwest::Client::builder()
         .timeout(Duration::from_secs(600))
         .user_agent("TaskPilot/0.1")
         .build()
         .map_err(|error| format!("无法创建下载客户端: {error}"))?;
-    let url = format!("{UV_MIRROR}/{}", archive_name());
+    let url = format!("{}/{}", base.trim_end_matches('/'), archive_name());
 
     let checksum = client
         .get(format!("{url}.sha256"))
@@ -312,6 +350,12 @@ pub struct UvSettingsResponse {
     pub python_dir: String,
     /// 实际生效的 uv 缓存目录（绝对路径）
     pub cache_dir: String,
+    /// 当前使用的下载镜像根（GitHub Release 镜像）；空值时返回内置默认
+    pub mirror_url: String,
+    /// uv 自身压缩包的下载地址前缀
+    pub uv_download_url: String,
+    /// Python 解释器的下载地址前缀（注入 `UV_PYTHON_INSTALL_MIRROR`）
+    pub python_mirror_url: String,
     /// 两个路径变量的默认值（相对程序目录），页面用来显示「默认」那一行
     pub env_defaults: BTreeMap<String, String>,
     /// 当前设置指向的 uv；不可用时 `version` 为空
@@ -330,6 +374,9 @@ pub struct UpdateUvSettingsRequest {
     /// 额外注入给 uv 的环境变量；只允许 `UV_` 前缀
     #[serde(default)]
     pub extra_env: BTreeMap<String, String>,
+    /// uv 本体与解释器的下载镜像根（GitHub Release 镜像）；空 = 内置默认
+    #[serde(default)]
+    pub mirror_url: Option<String>,
 }
 
 /// 执行期使用的 uv 设置；读取失败时回退到程序目录 uv，不让任务因此跑不起来。
@@ -378,10 +425,24 @@ fn describe(settings: &UvSettings) -> UvSettingsResponse {
         managed_dir: managed_directory.to_string_lossy().into_owned(),
         python_dir: settings.python_install_dir().to_string_lossy().into_owned(),
         cache_dir: settings.cache_dir().to_string_lossy().into_owned(),
-        env_defaults: UV_PATH_DEFAULTS
+        mirror_url: settings.mirror_base(),
+        uv_download_url: settings.uv_download_base(),
+        python_mirror_url: settings
+            .extra_env
+            .get(PYTHON_MIRROR_ENV)
+            .cloned()
+            .unwrap_or_else(|| settings.python_mirror_url()),
+        env_defaults: {
+            let mut defaults: BTreeMap<String, String> = UV_PATH_DEFAULTS
                 .iter()
                 .map(|(key, value)| ((*key).to_owned(), (*value).to_owned()))
-            .collect(),
+                .collect();
+            defaults.insert(
+                PYTHON_MIRROR_ENV.to_owned(),
+                settings.python_mirror_url(),
+            );
+            defaults
+        },
         executable: current.map(|candidate| candidate.path.clone()),
         version: current.and_then(|candidate| candidate.version.clone()),
         candidates,
@@ -460,40 +521,69 @@ fn validate(request: UpdateUvSettingsRequest) -> ApiResult<UvSettings> {
         source: request.source,
         custom_path,
         extra_env: validate_extra_env(&request.extra_env)?,
+        mirror_url: validate_mirror_url(request.mirror_url)?,
     })
 }
 
+fn validate_mirror_url(value: Option<String>) -> ApiResult<Option<String>> {
+    let Some(raw) = value else {
+        return Ok(None);
+    };
+    let trimmed = raw.trim().trim_end_matches('/');
+    if trimmed.is_empty() {
+        return Ok(None);
+    }
+    if trimmed.chars().count() > MAX_MIRROR_URL_CHARS {
+        return Err(ApiError::validation("url", "镜像地址过长"));
+    }
+    let parsed = Url::parse(trimmed)
+        .map_err(|_| ApiError::validation("url", "镜像地址不是有效的 URL"))?;
+    if !matches!(parsed.scheme(), "http" | "https") {
+        return Err(ApiError::validation("url", "镜像地址只支持 http 或 https"));
+    }
+    if parsed.host_str().is_none() {
+        return Err(ApiError::validation("url", "镜像地址缺少主机名"));
+    }
+    if !parsed.username().is_empty() || parsed.password().is_some() {
+        return Err(ApiError::validation("url", "镜像地址不能包含用户名或密码"));
+    }
+    Ok(Some(trimmed.to_owned()))
+}
+
 async fn load(pool: &SqlitePool) -> ApiResult<UvSettings> {
-    let row = sqlx::query_as::<_, (String, Option<String>, String)>(
-        "SELECT source, custom_path, extra_env FROM uv_settings WHERE id = 1",
+    let row = sqlx::query_as::<_, (String, Option<String>, String, Option<String>)>(
+        "SELECT source, custom_path, extra_env, mirror_url FROM uv_settings WHERE id = 1",
     )
     .fetch_optional(pool)
     .await?;
 
-    let Some((source, custom_path, extra_env)) = row else {
+    let Some((source, custom_path, extra_env, mirror_url)) = row else {
         return Ok(UvSettings::default());
     };
     Ok(UvSettings {
         source: UvSource::parse(&source).unwrap_or(UvSource::Managed),
         custom_path,
         extra_env: serde_json::from_str(&extra_env).unwrap_or_default(),
+        mirror_url,
     })
 }
 
 async fn save(pool: &SqlitePool, settings: &UvSettings) -> ApiResult<()> {
     let extra_env = serde_json::to_string(&settings.extra_env)?;
     sqlx::query(
-        "INSERT INTO uv_settings (id, source, custom_path, extra_env, updated_at)
-         VALUES (1, ?, ?, ?, ?)
+        "INSERT INTO uv_settings (id, source, custom_path, extra_env, mirror_url, updated_at)
+         VALUES (1, ?, ?, ?, ?, ?)
          ON CONFLICT(id) DO UPDATE SET
              source = excluded.source,
              custom_path = excluded.custom_path,
              extra_env = excluded.extra_env,
+             mirror_url = excluded.mirror_url,
              updated_at = excluded.updated_at",
     )
     .bind(settings.source.as_str())
     .bind(settings.custom_path.as_deref())
     .bind(extra_env)
+    .bind(settings.mirror_url.as_deref())
     .bind(Utc::now())
     .execute(pool)
     .await?;
@@ -551,12 +641,12 @@ pub async fn update_uv_settings(
 )]
 pub async fn download_uv(State(state): State<AppState>) -> ApiResult<Json<UvSettingsResponse>> {
     // shortcut: 并发下载不互斥，后完成的覆盖先完成的；单用户本地工具够用，需要时加互斥。
-    let version = download_and_install()
+    let mut settings = load(&state.pool).await?;
+    let version = download_and_install(&settings.uv_download_base())
         .await
         .map_err(|message| ApiError::bad_request("UV_DOWNLOAD_FAILED", message))?;
     tracing::info!(%version, "downloaded uv into the managed directory");
 
-    let mut settings = load(&state.pool).await?;
     // 下载的目的就是让它生效，所以直接切到程序目录 uv。
     settings.source = UvSource::Managed;
     save(&state.pool, &settings).await?;
@@ -589,6 +679,7 @@ mod tests {
             source,
             custom_path: custom_path.map(str::to_owned),
             extra_env: BTreeMap::new(),
+            mirror_url: None,
         }
     }
 
@@ -598,6 +689,7 @@ mod tests {
             source: UvSource::Custom,
             custom_path: Some(r"C:\tools\uv\uv.exe".to_owned()),
             extra_env: BTreeMap::new(),
+            mirror_url: None,
         };
         assert_eq!(custom.program(), PathBuf::from(r"C:\tools\uv\uv.exe"));
 
@@ -605,6 +697,7 @@ mod tests {
             source: UvSource::Managed,
             custom_path: None,
             extra_env: BTreeMap::new(),
+            mirror_url: None,
         };
         assert_eq!(managed.program(), managed_directory().join(UV_EXECUTABLE));
     }
@@ -638,6 +731,7 @@ mod tests {
             source: UvSource::Managed,
             custom_path: None,
             extra_env,
+            mirror_url: None,
         })
         .unwrap();
 
@@ -656,6 +750,7 @@ mod tests {
                 source: UvSource::Managed,
                 custom_path: None,
                 extra_env,
+                mirror_url: None,
             });
             assert!(result.is_err(), "{name} should be rejected");
         }
@@ -667,6 +762,7 @@ mod tests {
                 source: UvSource::Managed,
                 custom_path: None,
                 extra_env,
+                mirror_url: None,
             })
             .is_err()
         );
@@ -693,6 +789,87 @@ mod tests {
         assert!(parse_sha256("").is_none());
     }
 
+    #[test]
+    fn derives_uv_and_python_urls_from_the_mirror_base() {
+        let settings = UvSettings {
+            mirror_url: Some("https://mirror.example/github-release/".to_owned()),
+            ..UvSettings::default()
+        };
+
+        assert_eq!(settings.mirror_base(), "https://mirror.example/github-release");
+        assert_eq!(
+            settings.uv_download_base(),
+            "https://mirror.example/github-release/astral-sh/uv/LatestRelease"
+        );
+        assert_eq!(
+            settings.python_mirror_url(),
+            "https://mirror.example/github-release/astral-sh/python-build-standalone/releases/download"
+        );
+    }
+
+    #[test]
+    fn falls_back_to_the_builtin_mirror() {
+        let settings = UvSettings::default();
+
+        assert_eq!(settings.mirror_base(), DEFAULT_MIRROR_BASE);
+        assert_eq!(
+            settings.uv_download_base(),
+            "https://mirrors.ustc.edu.cn/github-release/astral-sh/uv/LatestRelease"
+        );
+        assert_eq!(
+            settings.python_mirror_url(),
+            "https://mirrors.ustc.edu.cn/github-release/astral-sh/python-build-standalone/releases/download"
+        );
+    }
+
+    #[test]
+    fn validates_mirror_urls() {
+        assert_eq!(validate_mirror_url(None).unwrap(), None);
+        assert_eq!(validate_mirror_url(Some("   ".to_owned())).unwrap(), None);
+        assert_eq!(
+            validate_mirror_url(Some(
+                "https://mirrors.ustc.edu.cn/github-release/".to_owned()
+            ))
+            .unwrap()
+            .as_deref(),
+            Some("https://mirrors.ustc.edu.cn/github-release")
+        );
+        assert!(validate_mirror_url(Some("ftp://mirror.example".to_owned())).is_err());
+        assert!(validate_mirror_url(Some("not a url".to_owned())).is_err());
+        assert!(validate_mirror_url(Some("https://user:[email protected]".to_owned())).is_err());
+    }
+
+    #[test]
+    fn injects_the_python_mirror_and_keeps_user_overrides() {
+        let settings = UvSettings::default();
+        assert_eq!(
+            settings
+                .env()
+                .get("UV_PYTHON_INSTALL_MIRROR")
+                .map(String::as_str),
+            Some(
+                "https://mirrors.ustc.edu.cn/github-release/astral-sh/python-build-standalone/releases/download"
+            )
+        );
+
+        let mut extra_env = BTreeMap::new();
+        extra_env.insert(
+            "UV_PYTHON_INSTALL_MIRROR".to_owned(),
+            "https://my.mirror/python".to_owned(),
+        );
+        let custom = UvSettings {
+            extra_env,
+            ..UvSettings::default()
+        };
+        assert_eq!(
+            custom
+                .env()
+                .get("UV_PYTHON_INSTALL_MIRROR")
+                .map(String::as_str),
+            Some("https://my.mirror/python")
+        );
+    }
+
     #[test]
     fn extracts_uv_from_the_archive() {
         use std::io::Write;

backend/tests/api.rs

@@ -131,6 +131,30 @@ async fn directory_listing_endpoint_returns_subdirectories() {
     );
 }
 
+#[tokio::test]
+async fn directory_listing_endpoint_includes_files_when_requested() {
+    let (app, temp_dir) = test_app().await;
+    let tools = temp_dir.path().join("tools");
+    fs::create_dir_all(tools.join("bin")).expect("bin directory should be created");
+    fs::write(tools.join("uv.exe"), "x").expect("file should be written");
+
+    let uri = format!(
+        "/api/v1/system/directories?path={}&include_files=true",
+        encode_query_path(&tools)
+    );
+    let (status, body) = get_json(&app, &uri).await;
+
+    assert_eq!(status, StatusCode::OK);
+    let entries = body["entries"]
+        .as_array()
+        .expect("entries should be an array");
+    assert_eq!(entries.len(), 2);
+    assert_eq!(entries[0]["name"], "bin");
+    assert_eq!(entries[0]["is_dir"], true);
+    assert_eq!(entries[1]["name"], "uv.exe");
+    assert_eq!(entries[1]["is_dir"], false);
+}
+
 #[tokio::test]
 async fn directory_listing_endpoint_rejects_relative_paths() {
     let (app, _temp_dir) = test_app().await;

backend/tests/uv.rs

@@ -197,6 +197,81 @@ async fn uv_settings_mutations_require_token() {
     assert_eq!(body["code"], "FORBIDDEN");
 }
 
+#[tokio::test]
+async fn uv_mirror_is_saved_with_the_settings_and_drives_both_urls() {
+    let (app, _temp_dir) = test_app().await;
+    let token = auth_token(&app).await;
+
+    let (status, body) = send_json(&app, Method::GET, "/api/v1/uv", None, None).await;
+    assert_eq!(status, StatusCode::OK);
+    assert_eq!(
+        body["mirror_url"],
+        "https://mirrors.ustc.edu.cn/github-release"
+    );
+    assert_eq!(
+        body["uv_download_url"],
+        "https://mirrors.ustc.edu.cn/github-release/astral-sh/uv/LatestRelease"
+    );
+    assert_eq!(
+        body["python_mirror_url"],
+        "https://mirrors.ustc.edu.cn/github-release/astral-sh/python-build-standalone/releases/download"
+    );
+    // 解释器镜像作为默认环境变量出现在列表里，可以被显式覆盖
+    assert_eq!(
+        body["env_defaults"]["UV_PYTHON_INSTALL_MIRROR"],
+        "https://mirrors.ustc.edu.cn/github-release/astral-sh/python-build-standalone/releases/download"
+    );
+
+    // 非法镜像地址会被拒绝
+    let (status, body) = send_json(
+        &app,
+        Method::PUT,
+        "/api/v1/uv",
+        Some(&token),
+        Some(json!({
+            "source": "managed",
+            "mirror_url": "ftp://mirror.example"
+        })),
+    )
+    .await;
+    assert_eq!(status, StatusCode::BAD_REQUEST);
+    assert_eq!(body["field"], "url");
+
+    // 保存自定义镜像：两个下载地址都由它派生
+    let (status, saved) = send_json(
+        &app,
+        Method::PUT,
+        "/api/v1/uv",
+        Some(&token),
+        Some(json!({
+            "source": "managed",
+            "mirror_url": "https://mirror.example/github-release/"
+        })),
+    )
+    .await;
+    assert_eq!(status, StatusCode::OK);
+    assert_eq!(saved["mirror_url"], "https://mirror.example/github-release");
+    assert_eq!(
+        saved["uv_download_url"],
+        "https://mirror.example/github-release/astral-sh/uv/LatestRelease"
+    );
+
+    // 传 null 恢复内置默认
+    let (status, restored) = send_json(
+        &app,
+        Method::PUT,
+        "/api/v1/uv",
+        Some(&token),
+        Some(json!({ "source": "managed", "mirror_url": null })),
+    )
+    .await;
+    assert_eq!(status, StatusCode::OK);
+    assert_eq!(
+        restored["mirror_url"],
+        "https://mirrors.ustc.edu.cn/github-release"
+    );
+}
+
 #[tokio::test]
 async fn uv_download_requires_token() {
     let (app, _temp_dir) = test_app().await;

contracts/openapi.json

@@ -902,11 +902,20 @@
             "schema": {
               "type": "string"
             }
+          },
+          {
+            "name": "include_files",
+            "in": "query",
+            "description": "是否一并返回文件（挑选可执行文件时用）；默认只返回目录",
+            "required": false,
+            "schema": {
+              "type": "boolean"
+            }
           }
         ],
         "responses": {
           "200": {
-            "description": "Subdirectories of the requested path, or the drive list",
+            "description": "Subdirectories of the requested path (plus files when `include_files=true`), or the drive list",
             "content": {
               "application/json": {
                 "schema": {
@@ -1465,12 +1474,6 @@
   },
   "components": {
     "schemas": {
-      "ConcurrencyPolicy": {
-        "type": "string",
-        "enum": [
-          "skip"
-        ]
-      },
       "CreateManagedEnvRequest": {
         "type": "object",
         "required": [
@@ -1548,12 +1551,13 @@
           "action": {
             "$ref": "#/components/schemas/TaskAction"
           },
-          "concurrency_policy": {
-            "$ref": "#/components/schemas/ConcurrencyPolicy"
-          },
           "cron": {
             "type": "string"
           },
+          "description": {
+            "type": "string",
+            "description": "一句话说明，展示在任务卡片和详情里"
+          },
           "enabled": {
             "type": "boolean"
           },
@@ -1563,9 +1567,6 @@
           "name": {
             "type": "string"
           },
-          "retry_policy": {
-            "$ref": "#/components/schemas/RetryPolicy"
-          },
           "timeout_secs": {
             "type": "integer",
             "format": "int64",
@@ -1620,9 +1621,14 @@
         "type": "object",
         "required": [
           "name",
-          "path"
+          "path",
+          "is_dir"
         ],
         "properties": {
+          "is_dir": {
+            "type": "boolean",
+            "description": "true 表示目录（可继续进入），false 表示文件（`include_files` 时才出现）"
+          },
           "name": {
             "type": "string",
             "description": "用于展示的名称"
@@ -1869,22 +1875,6 @@
           }
         }
       },
-      "RetryPolicy": {
-        "type": "object",
-        "properties": {
-          "delay_secs": {
-            "type": "integer",
-            "format": "int64",
-            "minimum": 0
-          },
-          "max_attempts": {
-            "type": "integer",
-            "format": "int32",
-            "minimum": 0
-          }
-        },
-        "additionalProperties": false
-      },
       "RunStatus": {
         "type": "string",
         "enum": [
@@ -1901,8 +1891,7 @@
         "type": "string",
         "enum": [
           "schedule",
-          "manual",
-          "retry"
+          "manual"
         ]
       },
       "ScheduledTaskResponse": {
@@ -2136,12 +2125,11 @@
         "required": [
           "id",
           "name",
+          "description",
           "cron",
           "timezone",
           "enabled",
           "timeout_secs",
-          "concurrency_policy",
-          "retry_policy",
           "action",
           "created_at",
           "updated_at"
@@ -2150,9 +2138,6 @@
           "action": {
             "$ref": "#/components/schemas/TaskAction"
           },
-          "concurrency_policy": {
-            "$ref": "#/components/schemas/ConcurrencyPolicy"
-          },
           "created_at": {
             "type": "string",
             "format": "date-time"
@@ -2160,6 +2145,10 @@
           "cron": {
             "type": "string"
           },
+          "description": {
+            "type": "string",
+            "description": "一句话说明"
+          },
           "enabled": {
             "type": "boolean"
           },
@@ -2169,9 +2158,6 @@
           "name": {
             "type": "string"
           },
-          "retry_policy": {
-            "$ref": "#/components/schemas/RetryPolicy"
-          },
           "timeout_secs": {
             "type": "integer",
             "format": "int64",
@@ -2369,21 +2355,19 @@
           "action": {
             "$ref": "#/components/schemas/TaskAction"
           },
-          "concurrency_policy": {
-            "$ref": "#/components/schemas/ConcurrencyPolicy"
-          },
           "cron": {
             "type": "string"
           },
+          "description": {
+            "type": "string",
+            "description": "一句话说明，展示在任务卡片和详情里"
+          },
           "enabled": {
             "type": "boolean"
           },
           "name": {
             "type": "string"
           },
-          "retry_policy": {
-            "$ref": "#/components/schemas/RetryPolicy"
-          },
           "timeout_secs": {
             "type": "integer",
             "format": "int64",
@@ -2417,6 +2401,13 @@
               "type": "string"
             }
           },
+          "mirror_url": {
+            "type": [
+              "string",
+              "null"
+            ],
+            "description": "uv 本体与解释器的下载镜像根（GitHub Release 镜像）；空 = 内置默认"
+          },
           "source": {
             "$ref": "#/components/schemas/UvSource"
           }
@@ -2456,6 +2447,9 @@
           "managed_dir",
           "python_dir",
           "cache_dir",
+          "mirror_url",
+          "uv_download_url",
+          "python_mirror_url",
           "env_defaults",
           "candidates"
         ],
@@ -2508,13 +2502,25 @@
             "type": "string",
             "description": "程序目录下的 uv 目录"
           },
+          "mirror_url": {
+            "type": "string",
+            "description": "当前使用的下载镜像根（GitHub Release 镜像）；空值时返回内置默认"
+          },
           "python_dir": {
             "type": "string",
             "description": "实际生效的 Python 存放目录（绝对路径，相对值按程序目录解析）"
           },
+          "python_mirror_url": {
+            "type": "string",
+            "description": "Python 解释器的下载地址前缀（注入 `UV_PYTHON_INSTALL_MIRROR`）"
+          },
           "source": {
             "$ref": "#/components/schemas/UvSource"
           },
+          "uv_download_url": {
+            "type": "string",
+            "description": "uv 自身压缩包的下载地址前缀"
+          },
           "version": {
             "type": [
               "string",

docs/decisions/0009-uv-and-managed-environments.md

@@ -15,6 +15,7 @@ Python 任务需要一个可复现的运行环境，但宿主机上的工具链
 4. **路径默认值相对程序目录**：`UV_PYTHON_INSTALL_DIR` 默认 `python`、`UV_CACHE_DIR` 默认 `uv-cache`，注入前统一按可执行文件目录解析成绝对路径；用户可改成绝对路径。
 5. **用户环境优先，缺失才创建**：解析顺序仍是显式 `venv` → 解释器路径推断 → 工作目录向上查找；都没有时在**保存任务**时用 uv 创建 `.venv`，运行期只校验、不再自动装依赖。
 6. **托管环境**：`data/envs/<名称>` 预创建常用环境，Python 版本来自 `uv python install` 下载到平台的列表，可预装包、查看已装包。
+7. **解释器下载归 uv 配置**：`uv python install` / `uv python list` 的入口放在「uv 配置」弹窗（解释器由 uv 管理、落在 `UV_PYTHON_INSTALL_DIR`）；「虚拟环境」弹窗只负责从已下载列表里选版本创建环境。
 
 ## 原因
 
@@ -26,6 +27,6 @@ Python 任务需要一个可复现的运行环境，但宿主机上的工具链
 ## 边界
 
 - 托管环境不会自动升级依赖，也不跟随 `pyproject.toml` 变更重建。
-- `uv python install` 走 uv 自己的 Python 发行源，不受 PyPI 镜像影响；必要时用 `UV_PYTHON_INSTALL_MIRROR`。
+- `uv python install` 走 uv 自己的 Python 发行源（python-build-standalone），和 PyPI 镜像不是一回事；uv 配置弹窗里配「下载镜像」统一给 uv 本体与解释器用，解释器还可以用 `UV_PYTHON_INSTALL_MIRROR` 单独覆盖。
 - 删除托管环境是直接删除目录，不可恢复。
 - 自定义 uv 若版本过旧，`uv python list/envs` 等子命令可能与平台预期的参数不一致。

frontend/src/App.css

@@ -48,7 +48,7 @@
 
 .page-container {
   width: 100%;
-  max-width: 1600px;
+  max-width: 1320px;
   min-width: 0;
   margin: 0 auto;
 }
@@ -139,7 +139,8 @@
 }
 
 .toolbar-search {
-  flex: 1 1 260px;
+  flex: 1 1 200px;
+  min-width: 180px;
   max-width: 420px;
 }
 
@@ -151,7 +152,7 @@
 }
 
 .filter-select {
-  min-width: 140px;
+  min-width: 110px;
 }
 
 .task-name-cell {
@@ -227,16 +228,6 @@
   gap: 4px;
 }
 
-.pagination-bar {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  gap: 12px;
-  flex-wrap: wrap;
-  padding: 12px 16px;
-  border-top: 1px solid var(--su-border);
-}
-
 /* ---------- 任务编辑器 ---------- */
 
 .task-editor-modal {
@@ -651,6 +642,19 @@
   background-color: var(--su-bg-subtle);
 }
 
+/* 文件模式下选中的文件 */
+.directory-row-selected,
+.directory-row-selected:hover {
+  background-color: var(--su-color-primary-soft);
+  color: var(--su-color-primary);
+}
+
+.directory-check {
+  margin-left: auto;
+  flex-shrink: 0;
+  color: var(--su-color-primary);
+}
+
 .directory-icon {
   flex-shrink: 0;
   color: var(--su-text-muted);
@@ -956,28 +960,6 @@
 
 /* ---------- Python 镜像 ---------- */
 
-.mirror-summary {
-  display: flex;
-  align-items: flex-start;
-  justify-content: space-between;
-  gap: 24px;
-  flex-wrap: wrap;
-}
-
-.mirror-summary-main {
-  display: flex;
-  min-width: 0;
-  flex-direction: column;
-  gap: 4px;
-}
-
-.mirror-summary-meta {
-  display: flex;
-  flex-direction: column;
-  align-items: flex-start;
-  gap: 8px;
-}
-
 .mirror-card {
   overflow: hidden;
 }
@@ -1197,11 +1179,146 @@
     height: 50vh;
     flex: none;
   }
+}
 
-  .pagination-bar {
-    align-items: flex-start;
+/* ---------- uv 配置弹窗 ---------- */
+
+.uv-settings-modal {
+  width: min(720px, calc(100vw - 32px));
+  max-width: 720px;
+}
+
+.uv-settings {
+  display: flex;
   flex-direction: column;
 }
+
+/* 标签页：三段配置共用一块面板，内容自己撑高度 */
+.uv-tabs {
+  margin-bottom: 4px;
+}
+
+.uv-panel-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+}
+
+.uv-section {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+/* 来源那一行：路径输入框 + 右侧动作（下载 / 浏览） */
+.uv-path-row {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) auto;
+  align-items: center;
+  gap: 8px;
+}
+
+/* 程序目录的 uv：固定位置，只读展示，不做成输入框 */
+.uv-path-static {
+  display: flex;
+  height: var(--su-control-height-md);
+  align-items: center;
+  gap: 8px;
+  overflow: hidden;
+  border: 1px dashed var(--su-border-strong);
+  border-radius: var(--su-radius-sm);
+  padding: 0 10px;
+  background-color: var(--su-bg-subtle);
+  color: var(--su-text-sub);
+  font-family: var(--su-font-mono);
+  font-size: var(--su-font-size-sm);
+}
+
+.uv-path-static-text {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.uv-mirror-hint code {
+  font-family: var(--su-font-mono);
+  color: var(--su-text-sub);
+}
+
+/* 镜像源弹窗：PyPI 表格列多，比默认 lg 宽一点 */
+.mirror-settings-modal {
+  width: min(760px, calc(100vw - 32px));
+  max-width: 760px;
+}
+
+/* 固定的路径变量：不可编辑、不可删除，样式上做出区别 */
+.uv-env-locked {
+  display: flex;
+  height: var(--su-control-height-md);
+  align-items: center;
+  gap: 8px;
+  overflow: hidden;
+  border: 1px dashed var(--su-border-strong);
+  border-radius: var(--su-radius-sm);
+  padding: 0 10px;
+  background-color: var(--su-bg-subtle);
+  color: var(--su-text-sub);
+  font-family: var(--su-font-mono);
+  font-size: var(--su-font-size-sm);
+}
+
+.uv-env-locked-name {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.uv-version-input {
+  width: 160px;
+}
+
+.uv-inline-state {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 8px 0;
+}
+
+.uv-empty {
+  min-height: 0;
+  padding: 8px 0;
+}
+
+.uv-python-list {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.uv-python-item {
+  display: grid;
+  grid-template-columns: 96px minmax(0, 1fr);
+  align-items: center;
+  gap: 12px;
+}
+
+.uv-python-version {
+  font-variant-numeric: tabular-nums;
+}
+
+.uv-python-path {
+  display: block;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+@media (max-width: 640px) {
+  .uv-python-item {
+    grid-template-columns: minmax(0, 1fr);
+    gap: 4px;
+  }
 }
 
 .uv-env-rows {
@@ -1231,37 +1348,53 @@
   padding: 12px 16px;
 }
 
-/* ---------- 顶部导航（三栏工作台） ---------- */
+/* 虚拟环境管理弹窗：标题 + 说明在左，操作在右 */
+.env-manager-head {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 12px;
+  flex-wrap: wrap;
+}
+
+.env-manager-head > :first-child {
+  min-width: 0;
+  flex: 1;
+}
+
+.env-manager-empty {
+  min-height: 0;
+  align-items: center;
+  justify-content: center;
+  padding: 40px 24px;
+  text-align: center;
+}
+
+/* ---------- 顶部导航 ---------- */
+/* 整条由 Layout 的 header 承担（实底 + 下边线），这里只管内部：左品牌、右图标 */
 .app-header {
   display: flex;
   align-items: center;
   justify-content: space-between;
-  gap: 16px;
+  gap: 24px;
   width: 100%;
-  padding: 0 8px;
+  max-width: 1320px;
+  height: 100%;
+  margin: 0 auto;
+  padding: 0 16px;
 }
 
-.app-header-brand {
+.app-header-actions {
   display: flex;
+  flex: none;
   align-items: center;
-  gap: 12px;
-  min-width: 0;
+  gap: 4px;
 }
 
-.app-header-nav {
-  display: flex;
-  align-items: center;
-  gap: 6px;
-}
-
-.app-header-status {
-  margin-left: auto;
-}
-
-/* ---------- 三栏工作台 ---------- */
+/* ---------- 三栏工作台：左右各 1 份、中间 2 份（参考站 3/6/3） ---------- */
 .dashboard {
   display: grid;
-  grid-template-columns: 280px minmax(0, 1fr) 320px;
+  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr) minmax(0, 1fr);
   gap: 16px;
   align-items: start;
   padding: 16px 16px 40px;
@@ -1287,27 +1420,26 @@
 .dash-metrics {
   display: grid;
   grid-template-columns: repeat(2, minmax(0, 1fr));
-  gap: 8px;
-  margin-top: 10px;
+  gap: 12px 16px;
+  margin-top: 12px;
 }
 
+/* 概览指标：标签与数字在各自格子里居中 */
 .dash-metric {
   display: flex;
+  min-width: 0;
   flex-direction: column;
+  align-items: center;
   gap: 2px;
-  padding: 10px;
-  border: 1px solid var(--su-border);
-  border-radius: 8px;
-  background-color: var(--su-bg-subtle);
+  text-align: center;
 }
 
 .dash-metric-value {
+  font-family: var(--font-display);
   font-size: 22px;
-  font-weight: 600;
-}
-
-.dash-metric-danger {
-  color: var(--su-color-danger);
+  font-weight: var(--su-font-weight-bold);
+  font-variant-numeric: tabular-nums;
+  line-height: 1.2;
 }
 
 .dash-list {
@@ -1345,57 +1477,185 @@
   white-space: nowrap;
 }
 
-.task-grid {
-  display: grid;
-  grid-template-columns: repeat(2, minmax(0, 1fr));
-  gap: 10px;
-  margin-top: 12px;
-}
-
-.task-item {
+/* 首页「镜像源」卡片：默认镜像 + 运行时注入的环境变量 */
+.mirror-card-summary {
   display: flex;
+  min-width: 0;
   flex-direction: column;
-  gap: 8px;
-  padding: 10px;
-  border: 1px solid var(--su-border);
-  border-radius: 8px;
-  background-color: var(--su-bg-subtle);
-  min-width: 0;
+  gap: 4px;
+  margin-top: 10px;
 }
 
-.task-item-main {
+.mirror-card-url {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.mirror-card-inject {
+  margin-top: 8px;
+}
+
+/* 同一行放两组键值：uv 卡片里的「版本 + Python 解释器」 */
+.dash-inline-kv {
   display: flex;
-  align-items: flex-start;
-  gap: 10px;
+  align-items: baseline;
+  gap: 16px;
+  margin-top: 10px;
+  min-width: 0;
+  flex-wrap: wrap;
+}
+
+.dash-inline-item {
+  display: inline-flex;
+  min-width: 0;
+  align-items: baseline;
+  gap: 6px;
+}
+
+.dash-inline-item > * {
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+/* 最近触发：任务名在左、触发时间在右，名字过长时省略 */
+.dash-inline {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  gap: 12px;
+  margin-top: 8px;
   min-width: 0;
 }
 
-.task-item-mark {
-  display: grid;
-  place-items: center;
+.dash-inline-name {
+  min-width: 0;
+}
+
+.dash-inline-time {
   flex: none;
-  width: 32px;
-  height: 32px;
-  border: 1px solid var(--su-border);
-  border-radius: 8px;
-  background-color: var(--su-bg-card);
-  font-weight: 700;
+  font-variant-numeric: tabular-nums;
+  white-space: nowrap;
 }
 
-.task-item-text {
+.dash-inline-empty {
+  display: block;
+  margin-top: 8px;
+}
+
+/* 每个任务一张卡片：标题行（任务名 + 类型 + 活跃状态 + 右上角详情）、内容行（说明 · Cron/下次 · 操作） */
+.task-card-head {
   display: flex;
+  align-items: center;
+  gap: 8px;
+  margin-bottom: 6px;
+}
+
+/* 标题只占自身文字宽度：类型与活跃中标签紧跟任务名，详情按钮始终贴右 */
+.task-card-title {
+  flex: 0 1 auto;
+  min-width: 0;
+}
+
+.task-card-detail {
+  margin-left: auto;
+}
+
+/* 标题旁的状态标签：整体比默认标签小约三分之一（高 16、字 11、圆点 4） */
+.task-card-head .task-card-status-badge {
+  gap: 3px;
+  height: 16px;
+  padding: 0 6px;
+  font-size: 11px;
+  line-height: 1;
+}
+
+.task-card-head .task-card-status-badge > span {
+  width: 4px;
+  height: 4px;
+}
+
+.task-card {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 8px 16px;
+}
+
+.task-card-main {
+  display: flex;
+  flex: 1 1 160px;
   min-width: 0;
   flex-direction: column;
   gap: 2px;
 }
 
-.task-item-actions {
+/* 右侧调度块：Cron 与下次运行在左，操作按钮贴右，整块从更靠左的位置起排 */
+.task-card-plan {
+  display: flex;
+  flex: 0 0 auto;
+  min-width: 136px;
+  flex-direction: column;
+  align-items: flex-start;
+  gap: 3px;
+}
+
+.task-card-next {
+  display: inline-flex;
+  align-items: center;
+  border: 1px solid var(--su-border);
+  border-radius: var(--su-radius-sm);
+  padding: 2px 8px;
+  color: var(--su-text-sub);
+  font-size: 12px;
+  font-variant-numeric: tabular-nums;
+  line-height: 1.2;
+  white-space: nowrap;
+}
+
+/* 操作按钮贴卡片内容区的底边，和「下次运行」那一行齐平 */
+.task-card-side {
+  display: flex;
+  flex: none;
+  align-self: flex-end;
+  flex-direction: column;
+  align-items: flex-end;
+  gap: 4px;
+}
+
+.task-card-actions {
   justify-content: flex-end;
 }
 
+/* 任务详情弹窗：只读的键值列表 */
+.detail-grid {
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.detail-row {
+  display: grid;
+  grid-template-columns: 88px minmax(0, 1fr);
+  gap: 12px;
+  align-items: start;
+}
+
+.detail-value {
+  min-width: 0;
+  color: var(--su-text-main);
+  font-size: var(--su-font-size-sm);
+  line-height: var(--su-line-height-sm);
+  overflow-wrap: anywhere;
+  white-space: pre-line;
+}
+
 @media (max-width: 1200px) {
   .dashboard {
-    grid-template-columns: 240px minmax(0, 1fr);
+    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
   }
 
   .dashboard-right {
@@ -1414,108 +1674,77 @@
     grid-template-columns: minmax(0, 1fr);
   }
 
-  .task-grid {
-    grid-template-columns: minmax(0, 1fr);
-  }
-
   .app-header {
     flex-wrap: wrap;
   }
 }
 
-/* ---------- 左栏用户卡片 ---------- */
-.user-card {
+/* ---------- 左栏用户卡片：居中的资料卡 ---------- */
+.user-profile {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 10px;
+  padding: 6px 4px 2px;
+  text-align: center;
+}
+
+/* Avatar 的尺寸走组件自己的局部变量（见 Avatar.module.css），这里只放大一档 */
+.user-profile-avatar {
+  --avatar-size: 84px;
+  --avatar-badge: 22px;
+
+  width: var(--avatar-size);
+  height: var(--avatar-size);
+  font-size: 28px;
+}
+
+.user-profile-name-row {
   display: flex;
   align-items: center;
-  gap: 12px;
+  gap: 6px;
+  margin-top: 2px;
 }
 
-.user-avatar {
-  position: relative;
-  flex: none;
-}
-
-.user-online {
-  position: absolute;
-  right: 0;
-  bottom: 0;
-  width: 10px;
-  height: 10px;
-  border: 2px solid var(--su-bg-card);
-  border-radius: 50%;
-  background-color: #22c55e;
-}
-
-.user-meta {
-  display: flex;
-  min-width: 0;
-  flex-direction: column;
-  gap: 2px;
-}
-
-.user-dot {
-  display: inline-block;
+.user-profile-status {
   width: 6px;
   height: 6px;
-  margin-left: 6px;
   border-radius: 50%;
-  background-color: #22c55e;
+  background-color: var(--su-color-success);
 }
 
-.user-bio {
-  margin: 12px 0 0;
-  padding-top: 10px;
-  border-top: 1px solid var(--su-border);
+/* 参考稿是描边胶囊，Tag 默认是浅底，这里补一圈边框 */
+.user-profile-role {
+  border: 1px solid var(--su-border-strong);
+  background-color: transparent;
+  color: var(--su-text-secondary);
+}
+
+.user-profile-bio {
+  display: -webkit-box;
+  -webkit-line-clamp: 3;
+  -webkit-box-orient: vertical;
+  overflow: hidden;
   color: var(--su-text-muted);
-  font-size: 12px;
-  line-height: 1.6;
+  font-size: 13px;
+  line-height: 1.7;
 }
 
-/* 弹窗里的多个区块 */
-.modal-stack {
-  display: flex;
-  flex-direction: column;
-  gap: 16px;
-}
-
-/* uv 弹窗：环境变量左标签 + 底部操作 */
-/* 弹窗表单：区块标题 + 选项 chip + 底部操作条 */
-.form-section {
-  display: flex;
-  flex-direction: column;
-  gap: 10px;
-}
-
-.form-section-head {
-  display: flex;
+.user-profile-meta {
+  display: inline-flex;
   align-items: center;
-  justify-content: space-between;
-  gap: 12px;
+  gap: 6px;
+  margin-top: 2px;
 }
 
-.form-section-icon {
-  color: var(--su-text-muted);
+.user-profile-engine-dot {
+  width: 6px;
+  height: 6px;
+  border-radius: 50%;
+  background-color: var(--su-color-success);
 }
 
-.chip-row {
-  display: flex;
-  flex-wrap: wrap;
-  gap: 8px;
+.user-profile-engine-dot.is-offline {
+  background-color: var(--su-color-danger);
 }
 
-.form-actions {
-  display: flex;
-  align-items: center;
-  gap: 8px;
-  padding-top: 4px;
-}
-
-.form-actions > button:last-child {
-  flex: 1;
-}
-
-@media (max-width: 720px) {
-  .form-section-head {
-    flex-wrap: wrap;
-  }
-}

frontend/src/App.test.tsx

@@ -9,15 +9,11 @@ import App from './App'
 const task: Task = {
   id: 'echo_task',
   name: 'Echo task',
+  description: 'Echo the configured message',
   cron: '0 0 2 * * *',
   timezone: 'Asia/Shanghai',
   enabled: true,
   timeout_secs: 300,
-  concurrency_policy: 'skip',
-  retry_policy: {
-    max_attempts: 0,
-    delay_secs: 0,
-  },
   action: {
     type: 'script',
     working_dir: 'D:\\Projects\\echo',
@@ -53,17 +49,32 @@ interface FetchMockOptions {
   }>
   envPackages?: Record<string, Array<{ name: string; version: string }>>
   pythons?: Array<{ version: string; path: string }>
+  /** 模拟「程序目录 uv 已安装」时的版本号，例如 `uv 0.9.0` */
+  uvVersion?: string
 }
 
 function uvSettingsPayload(
   source: string,
   customPath: string | null,
   managedVersion: string | null = null,
+  mirrorUrl: string | null = null,
 ) {
+  const mirrorBase = mirrorUrl ?? 'https://mirrors.ustc.edu.cn/github-release'
   return {
     source,
     custom_path: customPath,
+    extra_env: {},
+    env_defaults: {
+      UV_CACHE_DIR: 'uv-cache',
+      UV_PYTHON_INSTALL_DIR: 'python',
+      UV_PYTHON_INSTALL_MIRROR: `${mirrorBase}/astral-sh/python-build-standalone/releases/download`,
+    },
     managed_dir: 'D:\\TaskPilot\\uv',
+    python_dir: 'D:\\TaskPilot\\python',
+    cache_dir: 'D:\\TaskPilot\\uv-cache',
+    mirror_url: mirrorBase,
+    uv_download_url: `${mirrorBase}/astral-sh/uv/LatestRelease`,
+    python_mirror_url: `${mirrorBase}/astral-sh/python-build-standalone/releases/download`,
     executable:
       source === 'managed'
         ? 'D:\\TaskPilot\\uv\\uv.exe'
@@ -93,7 +104,8 @@ function uvSettingsPayload(
 function createFetchMock(options: FetchMockOptions = {}) {
   let uvSource = 'managed'
   let uvCustomPath: string | null = null
-  let uvManagedVersion: string | null = null
+  let uvManagedVersion: string | null = options.uvVersion ?? null
+  let uvMirror: string | null = null
   let managedEnvs = options.envs ?? []
   let managedPythons = options.pythons ?? []
   const managedPackages = options.envPackages ?? {}
@@ -192,21 +204,37 @@ function createFetchMock(options: FetchMockOptions = {}) {
       if (url.endsWith('/api/v1/uv/download')) {
         uvSource = 'managed'
         uvManagedVersion = 'uv 0.9.0'
-        return jsonResponse(uvSettingsPayload(uvSource, uvCustomPath, uvManagedVersion))
+        return jsonResponse(
+          uvSettingsPayload(
+            uvSource,
+            uvCustomPath,
+            uvManagedVersion,
+            uvMirror,
+          ),
+        )
       }
       if (url.endsWith('/api/v1/uv')) {
         const request = init?.body
           ? (JSON.parse(String(init.body)) as {
               source: string
               custom_path?: string | null
+              mirror_url?: string | null
             })
           : null
         if (request) {
           uvSource = request.source
           uvCustomPath = request.custom_path ?? null
+          if (request.mirror_url !== undefined) {
+            uvMirror = request.mirror_url
+          }
         }
         return jsonResponse(
-          uvSettingsPayload(uvSource, uvCustomPath, uvManagedVersion),
+          uvSettingsPayload(
+            uvSource,
+            uvCustomPath,
+            uvManagedVersion,
+            uvMirror,
+          ),
         )
       }
       if (url.endsWith('/api/v1/cron/preview')) {
@@ -310,53 +338,91 @@ describe('TaskDashboard', () => {
     vi.stubGlobal('fetch', createFetchMock())
     renderApp()
 
-    expect(await screen.findByText('Echo task')).toBeInTheDocument()
-    expect(screen.getByText('echo_task')).toBeInTheDocument()
+    // 任务名会同时出现在卡片和左下角「最近触发」里
+    expect((await screen.findAllByText('Echo task')).length).toBeGreaterThan(0)
+    expect(
+      screen.getByText('Echo the configured message'),
+    ).toBeInTheDocument()
     expect(screen.getByText('0 0 2 * * *')).toBeInTheDocument()
-    expect(await screen.findByText('在线')).toBeInTheDocument()
+    // 顶部品牌栏和用户卡片都会显示引擎状态
+    expect((await screen.findAllByText('引擎在线')).length).toBeGreaterThan(0)
   })
 
-  it('navigates to the python settings page from the sidebar', async () => {
+  it('opens the uv settings dialog from the right column', async () => {
     vi.stubGlobal('fetch', createFetchMock())
     const user = userEvent.setup()
     renderApp()
 
     await user.click(
-      await screen.findByRole('button', { name: 'Python 环境' }),
+      await screen.findByRole('button', { name: '配置 uv' }),
     )
 
     expect(
-      await screen.findByRole('heading', { name: 'Python 环境' }),
-    ).toBeInTheDocument()
-    // 镜像和 uv 在同一页
-    expect(
-      await screen.findByRole('row', { name: /清华 TUNA/ }),
-    ).toBeInTheDocument()
-    expect(
-      await screen.findByText('uv 可执行文件'),
+      await screen.findByRole('heading', { name: 'uv 配置' }),
     ).toBeInTheDocument()
+    // 三段配置改用标签页切换：可执行文件 / 环境变量 / Python 解释器
+    expect(screen.getByRole('tab', { name: 'uv 可执行文件' })).toBeInTheDocument()
+    expect(screen.getByRole('tab', { name: /环境变量/ })).toBeInTheDocument()
+    expect(screen.getByRole('tab', { name: /Python 解释器/ })).toBeInTheDocument()
+    // 顶部不再重复首页已有的版本 / 数量 / 镜像地址
+    expect(screen.queryByText(/uv 下载/)).toBeNull()
   })
 
-  it('saves the uv executable and env vars picked on the python page', async () => {
+  it('saves the uv download mirror from the uv dialog', async () => {
     const fetchMock = createFetchMock()
     vi.stubGlobal('fetch', fetchMock)
     const user = userEvent.setup()
     renderApp()
 
-    await user.click(await screen.findByRole('button', { name: 'Python 环境' }))
-    expect(await screen.findByText('未检测到可用的 uv')).toBeInTheDocument()
+    await user.click(await screen.findByRole('button', { name: '配置 uv' }))
+    const input = await screen.findByLabelText('下载镜像')
+    await user.clear(input)
+    await user.type(input, 'https://mirror.example/github-release')
+    await user.click(screen.getByRole('button', { name: '保存设置' }))
 
-    await user.click(
-      screen.getByRole('radio', { name: '指定自己下载的 uv 路径' }),
+    await waitFor(() => {
+      expect(
+        fetchMock.mock.calls.some(
+          ([request, init]) =>
+            String(request).endsWith('/api/v1/uv') && init?.method === 'PUT',
+        ),
+      ).toBe(true)
+    })
+    const saved = fetchMock.mock.calls.find(
+      ([request, init]) =>
+        String(request).endsWith('/api/v1/uv') && init?.method === 'PUT',
     )
+    expect(JSON.parse(String(saved?.[1]?.body)).mirror_url).toBe(
+      'https://mirror.example/github-release',
+    )
+  })
+
+  it('saves the uv executable and env vars from the uv dialog', async () => {
+    const fetchMock = createFetchMock()
+    vi.stubGlobal('fetch', fetchMock)
+    const user = userEvent.setup()
+    renderApp()
+
+    await user.click(await screen.findByRole('button', { name: '配置 uv' }))
+    expect(
+      await screen.findByRole('button', { name: '下载 uv' }),
+    ).toBeInTheDocument()
+    await user.click(screen.getByRole('radio', { name: '指定路径' }))
     await user.type(
       screen.getByLabelText('uv 可执行文件'),
       'D:\\tools\\uv.exe',
     )
+    // 环境变量在第二个标签页里
+    await user.click(screen.getByRole('tab', { name: /环境变量/ }))
+    // 三个关键变量（两个路径 + 解释器镜像）固定在列表里，不能删除
+    const uvDialog = await screen.findByRole('dialog', { name: 'uv 配置' })
+    expect(
+      within(uvDialog).queryByRole('button', { name: '删除' }),
+    ).toBeNull()
     await user.click(screen.getByRole('button', { name: '+ 添加变量' }))
-    await user.type(screen.getByLabelText('环境变量名 1'), 'UV_CACHE_DIR')
-    await user.type(screen.getByLabelText('环境变量值 1'), 'D:\\uv-cache')
-    await user.click(screen.getByRole('button', { name: '保存' }))
+    await user.type(screen.getByLabelText('环境变量名 4'), 'UV_HTTP_TIMEOUT')
+    await user.type(screen.getByLabelText('环境变量值 4'), '60')
+    await user.click(screen.getByRole('button', { name: '保存设置' }))
 
     await waitFor(() => {
       expect(
@@ -373,17 +439,63 @@ describe('TaskDashboard', () => {
     expect(JSON.parse(String(saved?.[1]?.body))).toEqual({
       source: 'custom',
       custom_path: 'D:\\tools\\uv.exe',
-      extra_env: { UV_CACHE_DIR: 'D:\\uv-cache' },
+      extra_env: { UV_HTTP_TIMEOUT: '60' },
+      mirror_url: 'https://mirrors.ustc.edu.cn/github-release',
     })
   })
 
+  it('picks the uv executable through the file browser', async () => {
+    vi.stubGlobal(
+      'fetch',
+      createFetchMock({
+        directories: (path) =>
+          jsonResponse(
+            path
+              ? {
+                  path,
+                  parent: 'C:\\',
+                  entries: [
+                    {
+                      name: 'uv.exe',
+                      path: `${path}${path.endsWith('\\') ? '' : '\\'}uv.exe`,
+                      is_dir: false,
+                    },
+                  ],
+                  truncated: false,
+                }
+              : {
+                  path: null,
+                  parent: null,
+                  entries: [{ name: 'C:\\', path: 'C:\\', is_dir: true }],
+                  truncated: false,
+                },
+          ),
+      }),
+    )
+    const user = userEvent.setup()
+    renderApp()
+
+    await user.click(await screen.findByRole('button', { name: '配置 uv' }))
+    await user.click(screen.getByRole('radio', { name: '指定路径' }))
+    await user.click(screen.getByRole('button', { name: '浏览' }))
+
+    expect(
+      await screen.findByRole('heading', { name: '选择 uv 可执行文件' }),
+    ).toBeInTheDocument()
+    await user.click(await screen.findByRole('button', { name: 'C:\\' }))
+    await user.click(await screen.findByRole('button', { name: 'uv.exe' }))
+    await user.click(screen.getByRole('button', { name: '使用此文件' }))
+
+    expect(screen.getByLabelText('uv 可执行文件')).toHaveValue('C:\\uv.exe')
+  })
+
   it('downloads uv from the mirror and switches to it', async () => {
     const fetchMock = createFetchMock()
     vi.stubGlobal('fetch', fetchMock)
     const user = userEvent.setup()
     renderApp()
 
-    await user.click(await screen.findByRole('button', { name: 'Python 环境' }))
+    await user.click(await screen.findByRole('button', { name: '配置 uv' }))
     await user.click(await screen.findByRole('button', { name: '下载 uv' }))
 
     await waitFor(() => {
@@ -395,16 +507,17 @@ describe('TaskDashboard', () => {
         ),
       ).toBe(true)
     })
-    expect((await screen.findAllByText('uv 0.9.0')).length).toBeGreaterThan(0)
+    expect((await screen.findAllByText('0.9.0')).length).toBeGreaterThan(0)
   })
 
-  it('downloads a python version with uv', async () => {
-    const fetchMock = createFetchMock()
+  it('downloads a python version from the uv dialog', async () => {
+    const fetchMock = createFetchMock({ uvVersion: 'uv 0.9.0' })
     vi.stubGlobal('fetch', fetchMock)
     const user = userEvent.setup()
     renderApp()
 
-    await user.click(await screen.findByRole('button', { name: '虚拟环境' }))
+    await user.click(await screen.findByRole('button', { name: '配置 uv' }))
+    await user.click(screen.getByRole('tab', { name: /Python 解释器/ }))
     await user.type(screen.getByLabelText('要下载的 Python 版本'), '3.12')
     await user.click(screen.getByRole('button', { name: '下载 Python' }))
 
@@ -440,8 +553,13 @@ describe('TaskDashboard', () => {
     const user = userEvent.setup()
     renderApp()
 
-    await user.click(await screen.findByRole('button', { name: '虚拟环境' }))
-    expect(await screen.findByText('还没有预创建的环境')).toBeInTheDocument()
+    await user.click(await screen.findByRole('button', { name: '管理' }))
+    const envDialog = await screen.findByRole('dialog', {
+      name: '虚拟环境管理',
+    })
+    expect(
+      await within(envDialog).findByText(/还没有预创建的环境/),
+    ).toBeInTheDocument()
 
     await user.click(screen.getByRole('button', { name: '+ 新建环境' }))
     await user.type(screen.getByLabelText('环境名'), 'data-science')
@@ -493,7 +611,7 @@ describe('TaskDashboard', () => {
     const user = userEvent.setup()
     renderApp()
 
-    await user.click(await screen.findByRole('button', { name: '虚拟环境' }))
+    await user.click(await screen.findByRole('button', { name: '管理' }))
     await user.click(await screen.findByRole('button', { name: '查看包' }))
 
     expect(await screen.findByText('numpy')).toBeInTheDocument()
@@ -533,11 +651,29 @@ describe('TaskDashboard', () => {
     })
   })
 
+  it('opens the task details from the card', async () => {
+    vi.stubGlobal('fetch', createFetchMock())
+    const user = userEvent.setup()
+    renderApp()
+
+    await user.click(await screen.findByRole('button', { name: '详情' }))
+
+    const dialog = await screen.findByRole('dialog', { name: '任务详情' })
+    expect(within(dialog).getByText('echo_task')).toBeInTheDocument()
+    expect(
+      within(dialog).getByText('Echo the configured message'),
+    ).toBeInTheDocument()
+    expect(within(dialog).getByText('D:\\Projects\\echo')).toBeInTheDocument()
+  })
+
   it('shows the next run time reported by the schedule endpoint', async () => {
     vi.stubGlobal('fetch', createFetchMock())
     renderApp()
 
-    expect(await screen.findByText(/下次/)).toBeInTheDocument()
+    // 卡片里直接显示排好的触发时间（MM/DD HH:mm）
+    expect(
+      (await screen.findAllByText(/^\d{2}\/\d{2} \d{2}:\d{2}$/)).length,
+    ).toBeGreaterThan(0)
   })
 
   it('creates a script task with the visible form values', async () => {

frontend/src/App.tsx

@@ -24,6 +24,7 @@ function App() {
     <Layout
       className="app-root"
       header={<AppHeader />}
+      headerVariant="solid"
       maxWidth="full"
       contentPadding="none"
     >

frontend/src/api/client.ts

@@ -311,13 +311,18 @@ export function createPythonVenv(
 /**
  * 列出目录下的子文件夹；不传 path 时返回盘符列表。
  * 用于页面内的目录浏览器，选中后把绝对路径回填到表单。
+ * `includeFiles` 为 true 时一并返回文件（挑选 uv.exe 这类可执行文件时用）。
  */
 export function listDirectories(
   path?: string,
+  options: { includeFiles?: boolean } = {},
   signal?: AbortSignal,
 ): Promise<DirectoryListingResponse> {
   return requestJson<DirectoryListingResponse>(
-    withQuery('/api/v1/system/directories', { path }),
+    withQuery('/api/v1/system/directories', {
+      path,
+      include_files: options.includeFiles ? 'true' : undefined,
+    }),
     { signal },
   )
 }

frontend/src/api/generated.ts

@@ -456,8 +456,6 @@ export interface paths {
 export type webhooks = Record<string, never>;
 export interface components {
     schemas: {
-        /** @enum {string} */
-        ConcurrencyPolicy: "skip";
         CreateManagedEnvRequest: {
             /** @description 目录名，`[A-Za-z0-9._-]`，也是任务里引用它的标识 */
             name: string;
@@ -478,12 +476,12 @@ export interface components {
         };
         CreateTaskRequest: {
             action: components["schemas"]["TaskAction"];
-            concurrency_policy?: components["schemas"]["ConcurrencyPolicy"];
             cron: string;
+            /** @description 一句话说明，展示在任务卡片和详情里 */
+            description?: string;
             enabled?: boolean;
             id: string;
             name: string;
-            retry_policy?: components["schemas"]["RetryPolicy"];
             /** Format: int64 */
             timeout_secs?: number;
             timezone?: string;
@@ -498,6 +496,8 @@ export interface components {
             timezone: string;
         };
         DirectoryEntry: {
+            /** @description true 表示目录（可继续进入），false 表示文件（`include_files` 时才出现） */
+            is_dir: boolean;
             /** @description 用于展示的名称 */
             name: string;
             /** @description 绝对路径，选中后回填到表单 */
@@ -574,16 +574,10 @@ export interface components {
             /** Format: date-time */
             updated_at: string;
         };
-        RetryPolicy: {
-            /** Format: int64 */
-            delay_secs?: number;
-            /** Format: int32 */
-            max_attempts?: number;
-        };
         /** @enum {string} */
         RunStatus: "queued" | "running" | "succeeded" | "failed" | "timed_out" | "cancelled" | "skipped";
         /** @enum {string} */
-        RunTrigger: "schedule" | "manual" | "retry";
+        RunTrigger: "schedule" | "manual";
         /** @description 已注册调度的任务及其下次触发时间。 */
         ScheduledTaskResponse: {
             /**
@@ -644,14 +638,14 @@ export interface components {
         };
         TaskResponse: {
             action: components["schemas"]["TaskAction"];
-            concurrency_policy: components["schemas"]["ConcurrencyPolicy"];
             /** Format: date-time */
             created_at: string;
             cron: string;
+            /** @description 一句话说明 */
+            description: string;
             enabled: boolean;
             id: string;
             name: string;
-            retry_policy: components["schemas"]["RetryPolicy"];
             /** Format: int64 */
             timeout_secs: number;
             timezone: string;
@@ -726,11 +720,11 @@ export interface components {
         };
         UpdateTaskRequest: {
             action: components["schemas"]["TaskAction"];
-            concurrency_policy?: components["schemas"]["ConcurrencyPolicy"];
             cron: string;
+            /** @description 一句话说明，展示在任务卡片和详情里 */
+            description?: string;
             enabled?: boolean;
             name: string;
-            retry_policy?: components["schemas"]["RetryPolicy"];
             /** Format: int64 */
             timeout_secs?: number;
             timezone?: string;
@@ -741,6 +735,8 @@ export interface components {
             extra_env?: {
                 [key: string]: string;
             };
+            /** @description uv 本体与解释器的下载镜像根（GitHub Release 镜像）；空 = 内置默认 */
+            mirror_url?: string | null;
             source: components["schemas"]["UvSource"];
         };
         UvCandidate: {
@@ -767,9 +763,15 @@ export interface components {
             };
             /** @description 程序目录下的 uv 目录 */
             managed_dir: string;
+            /** @description 当前使用的下载镜像根（GitHub Release 镜像）；空值时返回内置默认 */
+            mirror_url: string;
             /** @description 实际生效的 Python 存放目录（绝对路径，相对值按程序目录解析） */
             python_dir: string;
+            /** @description Python 解释器的下载地址前缀（注入 `UV_PYTHON_INSTALL_MIRROR`） */
+            python_mirror_url: string;
             source: components["schemas"]["UvSource"];
+            /** @description uv 自身压缩包的下载地址前缀 */
+            uv_download_url: string;
             version?: string | null;
         };
         /**
@@ -1553,6 +1555,8 @@ export interface operations {
             query?: {
                 /** @description 绝对目录路径；留空表示列出盘符 */
                 path?: string;
+                /** @description 是否一并返回文件（挑选可执行文件时用）；默认只返回目录 */
+                include_files?: boolean;
             };
             header?: never;
             path?: never;
@@ -1560,7 +1564,7 @@ export interface operations {
         };
         requestBody?: never;
         responses: {
-            /** @description Subdirectories of the requested path, or the drive list */
+            /** @description Subdirectories of the requested path (plus files when `include_files=true`), or the drive list */
             200: {
                 headers: {
                     [name: string]: unknown;

frontend/src/components/AppHeader.tsx

@@ -1,45 +1,60 @@
-import { useQuery } from '@tanstack/react-query'
-import { Brand, Space, Tag, Text } from '@stash/ui'
-import { fetchHealth } from '../api/client'
+import { useIsFetching, useQueryClient } from '@tanstack/react-query'
+import { Brand, Icon, IconButton, toast } from '@stash/ui'
+import { useEffect, useState } from 'react'
+
+type Scheme = 'light' | 'dark'
+
+const THEME_STORAGE_KEY = 'taskpilot.theme'
+
+function readScheme(): Scheme {
+  const saved = window.localStorage.getItem(THEME_STORAGE_KEY)
+  return saved === 'dark' ? 'dark' : 'light'
+}
 
 /**
- * 顶部导航：品牌 + 引擎状态。
+ * 顶部栏：左边品牌、右边操作图标。
  *
- * 配置入口都收进任务调度页的三栏卡片里（uv / 镜像源 / 虚拟环境都用弹窗），
- * 所以这里不再放页面级导航。
+ * 引擎状态、任务数量这些在左栏的用户卡片和「概览」里已经看得到，页头不再重复。
+ * 明暗切换只写本机偏好（`<html data-scheme>`），刷新会重拉页面数据；
+ * 「配置 / 退出」暂时没有对应入口，点了给个提示，不做假按钮。
  */
 export function AppHeader() {
-  const healthQuery = useQuery({
-    queryKey: ['health'],
-    queryFn: ({ signal }) => fetchHealth(signal),
-    refetchInterval: 30_000,
-  })
+  const queryClient = useQueryClient()
+  const [scheme, setScheme] = useState<Scheme>(readScheme)
+  const fetching = useIsFetching() > 0
 
-  const status = healthQuery.isPending
-    ? { tone: 'neutral' as const, label: '检测中' }
-    : healthQuery.isError
-      ? { tone: 'danger' as const, label: '引擎离线' }
-      : { tone: 'success' as const, label: '引擎在线' }
+  useEffect(() => {
+    document.documentElement.dataset.scheme = scheme
+    window.localStorage.setItem(THEME_STORAGE_KEY, scheme)
+  }, [scheme])
 
   return (
     <div className="app-header">
-      <div className="app-header-brand">
       <Brand name="TaskPilot" mark="TP" />
-        <Text className="app-header-tagline" size="xs" tone="muted">
-          本地任务调度 · Windows
-        </Text>
-      </div>
 
-      <Space className="app-header-status" gap="xs" align="center">
-        <Tag tone={status.tone} dot>
-          {status.label}
-        </Tag>
-        <Text size="xs" tone="muted">
-          {healthQuery.data?.version
-            ? `Rust 引擎 v${healthQuery.data.version}`
-            : '127.0.0.1:3000'}
-        </Text>
-      </Space>
+      <div className="app-header-actions">
+        <IconButton
+          label={scheme === 'dark' ? '切换到浅色' : '切换到深色'}
+          icon={<Icon name={scheme === 'dark' ? 'sun_line' : 'moon_line'} />}
+          onClick={() => setScheme(scheme === 'dark' ? 'light' : 'dark')}
+        />
+        <IconButton
+          label="刷新"
+          icon={<Icon name="lightning_line" />}
+          spinning={fetching}
+          onClick={() => void queryClient.invalidateQueries()}
+        />
+        <IconButton
+          label="配置"
+          icon={<Icon name="settings_1_line" />}
+          onClick={() => toast('配置入口还在任务卡片里（uv / 镜像源 / 虚拟环境）')}
+        />
+        <IconButton
+          label="退出"
+          icon={<Icon name="exit_line" />}
+          onClick={() => toast('本地单机版本没有登录，可以直接关掉窗口')}
+        />
+      </div>
     </div>
   )
 }

frontend/src/components/DirectoryPickerDialog.tsx

@@ -17,12 +17,25 @@ interface DirectoryPickerDialogProps {
   initialPath: string
   onSelect: (path: string) => void
   onClose: () => void
+  /** directory：选目录（默认）；file：选单个文件 */
+  mode?: 'directory' | 'file'
+  /** file 模式下只显示这些扩展名的文件，例如 ['.exe']；目录始终显示 */
+  fileExtensions?: string[]
+  /** 覆盖弹窗标题 */
+  title?: string
+}
+
+function isFilePath(value: string): boolean {
+  return /[^\\/]+\.[A-Za-z0-9]+$/.test(value.trim())
 }
 
 /**
  * 页面内的目录浏览器：从盘符开始逐级进入文件夹，最终把绝对路径回填到表单。
  * 浏览器拿不到系统文件对话框的真实路径，因此目录浏览由后端提供列表接口。
  *
+ * `mode="file"` 时同一套浏览逻辑也用来挑单个文件（例如 `uv.exe`）：
+ * 目录可以继续进入，文件点击选中后点「使用此文件」。
+ *
  * 外壳是组件库的 `Modal`，路径输入 / 按钮 / 空态 / 错误提示分别是
  * `Input` / `Button` / `Empty` / `Notice`。
  */
@@ -31,9 +44,14 @@ export function DirectoryPickerDialog({
   initialPath,
   onSelect,
   onClose,
+  mode = 'directory',
+  fileExtensions,
+  title,
 }: DirectoryPickerDialogProps) {
+  const isFileMode = mode === 'file'
   const [currentPath, setCurrentPath] = useState<string | null>(null)
   const [draftPath, setDraftPath] = useState('')
+  const [selectedFile, setSelectedFile] = useState<string | null>(null)
 
   useEffect(() => {
     if (!open) {
@@ -42,11 +60,17 @@ export function DirectoryPickerDialog({
     const start = initialPath.trim()
     setCurrentPath(start || null)
     setDraftPath(start)
+    setSelectedFile(null)
   }, [initialPath, open])
 
   const listing = useQuery({
-    queryKey: ['directories', currentPath],
-    queryFn: ({ signal }) => listDirectories(currentPath ?? undefined, signal),
+    queryKey: ['directories', currentPath, isFileMode],
+    queryFn: ({ signal }) =>
+      listDirectories(
+        currentPath ?? undefined,
+        { includeFiles: isFileMode },
+        signal,
+      ),
     enabled: open,
     retry: false,
   })
@@ -57,20 +81,30 @@ export function DirectoryPickerDialog({
     }
   }, [listing.data?.path])
 
-  const entries = listing.data?.entries ?? []
+  const entries = (listing.data?.entries ?? []).filter((entry) => {
+    // 老接口条目没有 is_dir 时按目录处理，行为与之前一致。
+    if (!isFileMode || entry.is_dir !== false || !fileExtensions?.length) {
+      return true
+    }
+    const lower = entry.name.toLowerCase()
+    return fileExtensions.some((extension) => lower.endsWith(extension))
+  })
   const currentDirectory = listing.data?.path ?? null
   const parent = listing.data?.parent ?? null
+  const typedFile = isFileMode && isFilePath(draftPath) ? draftPath.trim() : null
+  const chosen = isFileMode ? (selectedFile ?? typedFile) : currentDirectory
 
   const navigate = (path: string | null) => {
     setCurrentPath(path)
     setDraftPath(path ?? '')
+    setSelectedFile(null)
   }
 
   return (
     <Modal
       open={open}
       onClose={onClose}
-      title="选择工作目录"
+      title={title ?? (isFileMode ? '选择文件' : '选择工作目录')}
       size="lg"
       className="directory-picker-modal"
       footer={
@@ -80,22 +114,22 @@ export function DirectoryPickerDialog({
               将使用
             </Text>
             <Text size="sm" tone="sub" truncate>
-              {currentDirectory ?? '尚未选择目录'}
+              {chosen ?? (isFileMode ? '尚未选择文件' : '尚未选择目录')}
             </Text>
           </div>
           <Button variant="secondary" onClick={onClose}>
             取消
           </Button>
           <Button
-            disabled={!currentDirectory}
+            disabled={!chosen}
             onClick={() => {
-              if (currentDirectory) {
-                onSelect(currentDirectory)
+              if (chosen) {
+                onSelect(chosen)
                 onClose()
               }
             }}
           >
-            使用此目录
+            {isFileMode ? '使用此文件' : '使用此目录'}
           </Button>
         </>
       }
@@ -148,26 +182,49 @@ export function DirectoryPickerDialog({
         {!listing.isPending && !listing.isError && entries.length === 0 ? (
           <Empty
             text={
-              currentDirectory ? '该目录下没有子文件夹' : '没有可用的盘符'
+              currentDirectory
+                ? isFileMode
+                  ? fileExtensions?.length
+                    ? `该目录下没有 ${fileExtensions.join(' / ')} 文件`
+                    : '该目录下没有文件'
+                  : '该目录下没有子文件夹'
+                : '没有可用的盘符'
             }
           />
         ) : null}
 
         {entries.length > 0 ? (
           <ul className="directory-list">
-            {entries.map((entry) => (
+            {entries.map((entry) => {
+              const file = entry.is_dir === false
+              const selected = file && entry.path === selectedFile
+
+              return (
                 <li key={entry.path}>
                   <button
                     type="button"
-                  className="directory-row"
-                  onClick={() => navigate(entry.path)}
+                    className={
+                      selected
+                        ? 'directory-row directory-row-selected'
+                        : 'directory-row'
+                    }
+                    onClick={() =>
+                      file ? setSelectedFile(entry.path) : navigate(entry.path)
+                    }
                     title={entry.path}
                   >
-                  <Icon className="directory-icon" name="folder_more_line" />
+                    <Icon
+                      className="directory-icon"
+                      name={file ? 'box_line' : 'folder_more_line'}
+                    />
                     <span className="directory-name">{entry.name}</span>
+                    {selected ? (
+                      <Icon className="directory-check" name="check_line" />
+                    ) : null}
                   </button>
                 </li>
-            ))}
+              )
+            })}
           </ul>
         ) : null}
 

frontend/src/components/PythonEnvsSection.tsx

@@ -54,6 +54,8 @@ function linesToPackages(value: string): string[] {
  *
  * 环境放在 `data/envs/<名称>`，可以预装常用包；任务里把绝对路径填进
  * 「虚拟环境目录」就能复用。列表只读 `pyvenv.cfg`，包列表按需查询。
+ *
+ * 解释器由 uv 下载（入口在「uv 配置」弹窗），这里只负责挑一个版本创建环境。
  */
 export function PythonEnvsSection() {
   const queryClient = useQueryClient()
@@ -149,15 +151,15 @@ export function PythonEnvsSection() {
   return (
     <>
       <Card padding="md">
-        <Space justify="between" align="center" wrap>
-          <Space direction="column" gap="xs">
+        <div className="env-manager-head">
+          <Space direction="column" gap="xs" align="start">
             <Text strong>虚拟环境</Text>
             <Text size="xs" tone="muted">
-              预创建常用环境；任务里把这里的绝对路径填进「虚拟环境目录」即可复用。
+              用已下载的 Python 解释器创建常用环境；任务里把这里的绝对路径填进「虚拟环境目录」即可复用。
             </Text>
           </Space>
           <Button onClick={() => setCreateOpen(true)}>+ 新建环境</Button>
-        </Space>
+        </div>
       </Card>
 
       <Card padding="none">
@@ -182,9 +184,8 @@ export function PythonEnvsSection() {
           </div>
         ) : envs.length === 0 ? (
           <Empty
-            className="empty-state"
-            text="还没有预创建的环境"
-            action={<Button onClick={() => setCreateOpen(true)}>新建环境</Button>}
+            className="env-manager-empty"
+            text="还没有预创建的环境，点右上角「+ 新建环境」创建一个。"
           />
         ) : (
           <Table columns={ENV_COLUMNS} rows={rows} />
@@ -293,8 +294,8 @@ export function PythonEnvsSection() {
             label="Python 版本（可选）"
             hint={
               (pythonsQuery.data?.length ?? 0) === 0
-                ? '还没有下载 Python；先在上方「Python 版本」里下载，或选默认让 uv 自动下载'
-                : '列表来自 uv 下载到平台目录的版本；留空由 uv 决定'
+                ? '还没有下载解释器：先在「uv 配置 → Python 解释器」里下载，或选默认让 uv 自动决定'
+                : '列表来自 uv 下载到程序目录的版本（在「uv 配置」里下载）；留空由 uv 决定'
             }
           >
             <Select

frontend/src/components/PythonMirrorsSection.tsx

@@ -11,7 +11,6 @@ import {
   Tag,
   Text,
   TextButton,
-  Title,
   toast,
   type TableColumn,
 } from '@stash/ui'
@@ -105,7 +104,6 @@ export function PythonMirrorsSection() {
   })
 
   const mirrors = mirrorsQuery.data ?? []
-  const defaultMirror = mirrors.find((mirror) => mirror.is_default) ?? null
 
   const openCreate = () => {
     setEditingMirror(null)
@@ -168,7 +166,7 @@ export function PythonMirrorsSection() {
     <>
       <Card padding="md">
         <Space justify="between" align="center" wrap>
-          <Space direction="column" gap="xs">
+          <Space direction="column" gap="xs" align="start">
             <Text strong>包索引镜像</Text>
             <Text size="xs" tone="muted">
               默认镜像在 Python 脚本任务运行时注入 PIP_INDEX_URL / UV_INDEX_URL。
@@ -178,30 +176,6 @@ export function PythonMirrorsSection() {
         </Space>
       </Card>
 
-      <Card padding="md" className="mirror-summary">
-        <div className="mirror-summary-main">
-          <Text size="xs" tone="muted">
-            当前默认镜像
-          </Text>
-          <Title level={2}>{defaultMirror?.name ?? '未设置默认镜像'}</Title>
-          <Text className="mono" size="sm" tone="sub">
-            {defaultMirror?.index_url ?? 'Python 任务不会注入镜像环境变量'}
-          </Text>
-        </div>
-        <div className="mirror-summary-meta">
-          <Text size="xs" tone="muted">
-            运行时注入
-          </Text>
-          <Space gap="xs" wrap>
-            <Tag shape="rounded">PIP_INDEX_URL</Tag>
-            <Tag shape="rounded">UV_INDEX_URL</Tag>
-            {defaultMirror?.trusted_host ? (
-              <Tag shape="rounded">PIP_TRUSTED_HOST</Tag>
-            ) : null}
-          </Space>
-        </div>
-      </Card>
-
       <Notice title="镜像只影响任务运行，不会自动安装依赖">
         默认镜像在 Python 脚本任务启动时注入；任务自己配置的 PIP_INDEX_URL
         优先。修改后对下一次运行生效。

frontend/src/components/PythonRuntimeSection.tsx

@@ -1,135 +0,0 @@
-import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
-import {
-  Button,
-  Card,
-  Empty,
-  Input,
-  Result,
-  Space,
-  Spinner,
-  Table,
-  Text,
-  toast,
-  type TableColumn,
-} from '@stash/ui'
-import { useState } from 'react'
-import {
-  getUvSettings,
-  installPython,
-  listPythons,
-  type ManagedPython,
-} from '../api/client'
-
-const PYTHON_COLUMNS: TableColumn[] = [
-  { key: 'version', title: '版本', width: 160 },
-  { key: 'path', title: '解释器路径', width: 480 },
-]
-
-const PYTHON_VERSION_HINT = '3.12'
-
-/**
- * 「虚拟环境」页的 Python 版本区块：列出 uv 下载到平台目录的解释器，并支持下载新版本。
- *
- * 下载位置由 `UV_PYTHON_INSTALL_DIR` 决定，默认指向程序目录下的 `python\`。
- */
-export function PythonRuntimeSection() {
-  const queryClient = useQueryClient()
-  const [version, setVersion] = useState('')
-  const pythonsQuery = useQuery({
-    queryKey: ['managed-pythons'],
-    queryFn: ({ signal }) => listPythons(signal),
-  })
-  const uvQuery = useQuery({
-    queryKey: ['uv-settings'],
-    queryFn: ({ signal }) => getUvSettings(signal),
-  })
-
-  const installMutation = useMutation({
-    mutationFn: () => installPython({ version: version.trim() }),
-    onSuccess: (pythons: ManagedPython[]) => {
-      setVersion('')
-      toast.success(`Python 已下载（当前 ${pythons.length} 个版本可用）`)
-      void queryClient.invalidateQueries({ queryKey: ['managed-pythons'] })
-    },
-    onError: (error) => toast.error(error.message),
-  })
-
-  const pythons = pythonsQuery.data ?? []
-  const rows = pythons.map((python) => ({
-    id: python.version,
-    version: <Text strong>{python.version}</Text>,
-    path: (
-      <code className="code-chip" title={python.path}>
-        {python.path}
-      </code>
-    ),
-  }))
-
-  return (
-    <Card padding="md">
-      <Space direction="column" gap="md">
-        <Space direction="column" gap="xs">
-          <Text strong>Python 版本</Text>
-          <Text size="xs" tone="muted">
-            uv 下载的解释器放在{' '}
-            <Text className="mono">{uvQuery.data?.python_dir ?? 'python\\'}</Text>
-            （`UV_PYTHON_INSTALL_DIR` 默认指这里）；新建环境时从已下载的版本里选。
-          </Text>
-        </Space>
-
-        <Space gap="xs" wrap align="center">
-          <Input
-            value={version}
-            onChange={(event) => setVersion(event.target.value)}
-            className="mono-input"
-            placeholder={PYTHON_VERSION_HINT}
-            aria-label="要下载的 Python 版本"
-            spellCheck={false}
-          />
-          <Button
-            variant="secondary"
-            loading={installMutation.isPending}
-            onClick={() => {
-              if (!version.trim()) {
-                toast.error('请填写要下载的 Python 版本，例如 3.12')
-                return
-              }
-              installMutation.mutate()
-            }}
-          >
-            下载 Python
-          </Button>
-          {installMutation.isPending ? (
-            <Text size="xs" tone="muted">
-              正在下载，可能需要几十秒...
-            </Text>
-          ) : null}
-        </Space>
-
-        {pythonsQuery.isError ? (
-          <Result
-            status="error"
-            title="Python 列表加载失败"
-            description={pythonsQuery.error.message}
-            actions={
-              <Button
-                variant="secondary"
-                onClick={() => void pythonsQuery.refetch()}
-              >
-                重试
-              </Button>
-            }
-          />
-        ) : pythonsQuery.isPending ? (
-          <div className="state-block">
-            <Spinner label="正在读取 Python 版本" />
-          </div>
-        ) : pythons.length === 0 ? (
-          <Empty className="empty-state" text="还没有下载 Python 版本" />
-        ) : (
-          <Table columns={PYTHON_COLUMNS} rows={rows} />
-        )}
-      </Space>
-    </Card>
-  )
-}

frontend/src/components/RunLogDrawer.tsx

@@ -53,7 +53,6 @@ const TRIGGER_FILTERS = [
   { value: '', label: '全部触发' },
   { value: 'schedule', label: '定时' },
   { value: 'manual', label: '手动' },
-  { value: 'retry', label: '重试' },
 ]
 
 /**

frontend/src/components/StatusBadge.tsx

@@ -30,14 +30,20 @@ export function RunStatusBadge({ status }: RunStatusBadgeProps) {
 
 interface EnabledBadgeProps {
   enabled: boolean
+  className?: string
 }
 
-export function EnabledBadge({ enabled }: EnabledBadgeProps) {
+export function EnabledBadge({ enabled, className }: EnabledBadgeProps) {
   return (
     <Tag
       tone={enabled ? 'success' : 'neutral'}
       dot
-      className={enabled ? 'status-enabled' : 'status-disabled'}
+      className={[
+        enabled ? 'status-enabled' : 'status-disabled',
+        className,
+      ]
+        .filter(Boolean)
+        .join(' ')}
     >
       {enabled ? '活跃中' : '已暂停'}
     </Tag>

frontend/src/components/TaskDetailModal.tsx

@@ -0,0 +1,175 @@
+import { Button, Divider, Modal, Space, Tag, Text } from '@stash/ui'
+import type { ReactNode } from 'react'
+import type { Task } from '../api/client'
+import {
+  actionTypeLabel,
+  formatDateTime,
+  formatShortDateTime,
+} from '../lib/format'
+import { EnabledBadge } from './StatusBadge'
+
+interface TaskDetailModalProps {
+  task: Task | null
+  nextRunAt?: string
+  onClose: () => void
+}
+
+function DetailRow({ label, children }: { label: string; children: ReactNode }) {
+  return (
+    <div className="detail-row">
+      <Text size="xs" tone="muted">
+        {label}
+      </Text>
+      <div className="detail-value">{children}</div>
+    </div>
+  )
+}
+
+function envSummary(env: Record<string, string> | undefined): string {
+  const entries = Object.entries(env ?? {})
+  if (entries.length === 0) {
+    return '无'
+  }
+  return entries.map(([key, value]) => `${key}=${value}`).join('\n')
+}
+
+/**
+ * 任务详情：只读展示任务配置，入口是任务卡片上的「详情」。
+ *
+ * 和编辑表单分开：这里不做校验，也不会因为字段缺失而崩，方便核对线上实际配置。
+ */
+export function TaskDetailModal({
+  task,
+  nextRunAt,
+  onClose,
+}: TaskDetailModalProps) {
+  return (
+    <Modal
+      open={task !== null}
+      onClose={onClose}
+      title="任务详情"
+      size="lg"
+      footer={
+        <Button variant="secondary" onClick={onClose}>
+          关闭
+        </Button>
+      }
+    >
+      {task ? (
+        <Space direction="column" gap="md" align="stretch">
+          <Space direction="column" gap="xs" align="start">
+            <Space gap="xs" align="center" wrap>
+              <Text size="lg" strong>
+                {task.name}
+              </Text>
+              <Tag shape="rounded">{actionTypeLabel(task.action.type)}</Tag>
+              <EnabledBadge enabled={task.enabled} />
+            </Space>
+            <Text className="mono" size="xs" tone="muted">
+              {task.id}
+            </Text>
+            {task.description ? (
+              <Text size="sm" tone="sub">
+                {task.description}
+              </Text>
+            ) : null}
+          </Space>
+
+          <Divider spacing="sm" />
+
+          <Text strong size="sm">
+            基本信息
+          </Text>
+          <div className="detail-grid">
+            <DetailRow label="Cron">
+              <code className="code-chip">{task.cron}</code>
+            </DetailRow>
+            <DetailRow label="时区">{task.timezone}</DetailRow>
+            <DetailRow label="下次触发">
+              {task.enabled
+                ? nextRunAt
+                  ? formatShortDateTime(nextRunAt)
+                  : '调度中…'
+                : '未调度'}
+            </DetailRow>
+            <DetailRow label="超时">{task.timeout_secs} 秒</DetailRow>
+          </div>
+
+          <Divider spacing="sm" />
+
+          <Text strong size="sm">
+            执行配置
+          </Text>
+          <div className="detail-grid">
+            {task.action.type === 'script' ? (
+              <>
+                <DetailRow label="工作目录">
+                  {task.action.working_dir}
+                </DetailRow>
+                <DetailRow label="解释器">{task.action.interpreter}</DetailRow>
+                <DetailRow label="脚本">{task.action.script}</DetailRow>
+                <DetailRow label="运行参数">
+                  {task.action.args.length > 0
+                    ? task.action.args.join(' ')
+                    : '无'}
+                </DetailRow>
+                <DetailRow label="环境变量">
+                  {envSummary(task.action.env)}
+                </DetailRow>
+              </>
+            ) : null}
+
+            {task.action.type === 'http' ? (
+              <>
+                <DetailRow label="请求 URL">{task.action.url}</DetailRow>
+                <DetailRow label="请求方式">{task.action.method}</DetailRow>
+                <DetailRow label="期望状态码">
+                  {task.action.expected_status.length > 0
+                    ? task.action.expected_status.join(', ')
+                    : '2xx'}
+                </DetailRow>
+                <DetailRow label="请求 Header">
+                  {envSummary(task.action.headers)}
+                </DetailRow>
+                <DetailRow label="Body">{task.action.body || '无'}</DetailRow>
+              </>
+            ) : null}
+
+            {task.action.type === 'process' ? (
+              <>
+                <DetailRow label="可执行文件">
+                  {task.action.executable}
+                </DetailRow>
+                <DetailRow label="工作目录">
+                  {task.action.working_dir ?? '继承程序目录'}
+                </DetailRow>
+                <DetailRow label="运行参数">
+                  {task.action.args.length > 0
+                    ? task.action.args.join(' ')
+                    : '无'}
+                </DetailRow>
+                <DetailRow label="环境变量">
+                  {envSummary(task.action.env)}
+                </DetailRow>
+              </>
+            ) : null}
+          </div>
+
+          <Divider spacing="sm" />
+
+          <Text strong size="sm">
+            时间
+          </Text>
+          <div className="detail-grid">
+            <DetailRow label="创建时间">
+              {formatDateTime(task.created_at)}
+            </DetailRow>
+            <DetailRow label="更新时间">
+              {formatDateTime(task.updated_at)}
+            </DetailRow>
+          </div>
+        </Space>
+      ) : null}
+    </Modal>
+  )
+}

frontend/src/components/TaskEditorModal.tsx

@@ -462,6 +462,21 @@ export function TaskEditorModal({
           </FormField>
         </div>
 
+        <FormField
+          label="任务说明"
+          htmlFor="task-description"
+          hint="一句话说明这个任务做什么，会显示在任务卡片和详情里"
+          error={errors.description?.message}
+        >
+          <Textarea
+            id="task-description"
+            {...register('description')}
+            rows={2}
+            placeholder="例如：定时请求核心 API，返回非 200 状态码时触发报警"
+            aria-invalid={Boolean(errors.description)}
+          />
+        </FormField>
+
         <div className="form-grid">
           <FormField
             label="Cron 表达式"

frontend/src/components/UvSettingsModal.tsx

@@ -0,0 +1,601 @@
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
+import {
+  Button,
+  Empty,
+  FormField,
+  Icon,
+  Input,
+  Modal,
+  Notice,
+  RadioGroup,
+  Result,
+  Space,
+  Spinner,
+  Tabs,
+  Text,
+  TextButton,
+  toast,
+} from '@stash/ui'
+import { useState } from 'react'
+import {
+  downloadUv,
+  getUvSettings,
+  installPython,
+  listPythons,
+  updateUvSettings,
+  type ManagedPython,
+  type UvSettings,
+  type UvSource,
+} from '../api/client'
+import { shortUvVersion } from '../lib/format'
+import { DirectoryPickerDialog } from './DirectoryPickerDialog'
+
+const SOURCE_OPTIONS = [
+  { value: 'managed', label: '程序目录 uv' },
+  { value: 'custom', label: '指定路径' },
+]
+
+const PYTHON_VERSION_HINT = '3.12'
+
+type UvTab = 'binary' | 'env' | 'python'
+
+interface EnvRow {
+  name: string
+  value: string
+}
+
+function rowsFrom(
+  extraEnv: Record<string, string> | null | undefined,
+  envDefaults: Record<string, string> | null | undefined,
+): EnvRow[] {
+  const rows = Object.entries(extraEnv ?? {}).map(([name, value]) => ({
+    name,
+    value,
+  }))
+  // 没显式配置的路径变量显示成默认值那一行（相对程序目录），用户能看见也能改值；
+  // 这两个变量决定解释器和缓存的位置，界面里不允许删除。
+  for (const [name, value] of Object.entries(envDefaults ?? {})) {
+    const configured = rows.some(
+      (row) => row.name.toUpperCase() === name.toUpperCase(),
+    )
+    if (!configured) {
+      rows.unshift({ name, value })
+    }
+  }
+  return rows
+}
+
+function envMap(rows: EnvRow[]): Record<string, string> {
+  const map: Record<string, string> = {}
+  for (const row of rows) {
+    const name = row.name.trim()
+    const value = row.value.trim()
+    if (!name && !value) {
+      continue
+    }
+    map[name] = value
+  }
+  return map
+}
+
+/** `D:\tools\uv.exe` → `D:\tools`；拿不到目录时返回空串（让浏览器从盘符开始）。 */
+function directoryOf(path: string): string {
+  const trimmed = path.trim()
+  const index = Math.max(
+    trimmed.lastIndexOf('\\'),
+    trimmed.lastIndexOf('/'),
+  )
+  if (index <= 0) {
+    return ''
+  }
+  const directory = trimmed.slice(0, index)
+  return directory.endsWith(':') ? `${directory}\\` : directory
+}
+
+interface UvSettingsModalProps {
+  open: boolean
+  onClose: () => void
+}
+
+/**
+ * uv 配置弹窗：三段配置用标签页切换——可执行文件 / `UV_*` 环境变量 / Python 解释器。
+ *
+ * - 来源二选一：程序目录（只读路径 + 缺失时「下载 uv」）或指定路径（可编辑 + 「浏览」挑 exe）。
+ * - 下载镜像也在这一步：uv 本体与解释器都从它派生；解释器还可以用
+ *   `UV_PYTHON_INSTALL_MIRROR` 单独覆盖（它就在环境变量里）。
+ * - 环境变量里 `UV_PYTHON_INSTALL_DIR` / `UV_CACHE_DIR` / `UV_PYTHON_INSTALL_MIRROR`
+ *   是 uv 的关键变量，只能改值、不能删除；其余 `UV_*` 变量照常增删。
+ * - 解释器由 uv 下载到 `UV_PYTHON_INSTALL_DIR`；虚拟环境弹窗只从这份列表里挑版本。
+ * - 顶部不再放状态汇总：版本、解释器数量、镜像地址在首页的 uv 卡片里已经有了。
+ */
+export function UvSettingsModal({ open, onClose }: UvSettingsModalProps) {
+  const queryClient = useQueryClient()
+  const settingsQuery = useQuery({
+    queryKey: ['uv-settings'],
+    queryFn: ({ signal }) => getUvSettings(signal),
+  })
+  // 解释器列表由 uv 自己列举；uv 不可用时接口会报错，先不请求。
+  const uvReady = Boolean(settingsQuery.data?.version)
+  const pythonsQuery = useQuery({
+    queryKey: ['managed-pythons'],
+    queryFn: ({ signal }) => listPythons(signal),
+    enabled: uvReady,
+  })
+
+  const [draftSource, setDraftSource] = useState<UvSource | null>(null)
+  const [draftCustomPath, setDraftCustomPath] = useState<string | null>(null)
+  const [draftMirror, setDraftMirror] = useState<string | null>(null)
+  const [draftEnv, setDraftEnv] = useState<EnvRow[] | null>(null)
+  const [pythonVersion, setPythonVersion] = useState('')
+  const [pickerOpen, setPickerOpen] = useState(false)
+  const [activeTab, setActiveTab] = useState<UvTab>('binary')
+
+  const settings = settingsQuery.data
+  // 编辑过就用草稿，否则跟随服务端当前设置（保存成功后清空草稿重新对齐）。
+  const source = draftSource ?? settings?.source ?? 'managed'
+  const customPath = draftCustomPath ?? settings?.custom_path ?? ''
+  const mirrorUrl = draftMirror ?? settings?.mirror_url ?? ''
+  const envRows =
+    draftEnv ?? rowsFrom(settings?.extra_env, settings?.env_defaults)
+  const pythons = pythonsQuery.data ?? []
+  const managedPath = `${settings?.managed_dir ?? 'uv'}\\uv.exe`
+  const lockedNames = Object.keys(settings?.env_defaults ?? {}).map((name) =>
+    name.toUpperCase(),
+  )
+  const isLockedName = (name: string) =>
+    lockedNames.includes(name.trim().toUpperCase())
+
+  const resetDrafts = () => {
+    setDraftSource(null)
+    setDraftCustomPath(null)
+    setDraftMirror(null)
+    setDraftEnv(null)
+  }
+
+  const saveMutation = useMutation({
+    mutationFn: () => {
+      const extraEnv = envMap(envRows)
+      // 和默认值一样就不写死，删掉等于回到默认。
+      for (const [name, value] of Object.entries(settings?.env_defaults ?? {})) {
+        const configured = Object.keys(extraEnv).some(
+          (key) => key.toUpperCase() === name.toUpperCase(),
+        )
+        if (configured && extraEnv[name]?.trim() === value) {
+          delete extraEnv[name]
+        }
+      }
+      return updateUvSettings({
+        source,
+        custom_path: customPath.trim() || null,
+        extra_env: extraEnv,
+        mirror_url: mirrorUrl.trim() || null,
+      })
+    },
+    onSuccess: (saved: UvSettings) => {
+      resetDrafts()
+      toast.success(
+        saved.version
+          ? `uv 设置已保存（${shortUvVersion(saved.version)}）`
+          : '已保存 uv 设置，但当前 uv 不可用',
+      )
+      void queryClient.invalidateQueries({ queryKey: ['uv-settings'] })
+    },
+    onError: (error) => toast.error(error.message),
+  })
+
+  const downloadMutation = useMutation({
+    mutationFn: () => downloadUv(),
+    onSuccess: (saved: UvSettings) => {
+      resetDrafts()
+      toast.success(
+        `已下载 ${shortUvVersion(saved.version) ?? 'uv'} 并切换到程序目录 uv`,
+      )
+      void queryClient.invalidateQueries({ queryKey: ['uv-settings'] })
+    },
+    onError: (error) => toast.error(error.message),
+  })
+
+  const installMutation = useMutation({
+    mutationFn: () => installPython({ version: pythonVersion.trim() }),
+    onSuccess: (installed: ManagedPython[]) => {
+      setPythonVersion('')
+      queryClient.setQueryData(['managed-pythons'], installed)
+      toast.success(`Python 已下载（当前 ${installed.length} 个版本可用）`)
+      void queryClient.invalidateQueries({ queryKey: ['managed-pythons'] })
+    },
+    onError: (error) => toast.error(error.message),
+  })
+
+  const updateEnvRow = (index: number, patch: Partial<EnvRow>) => {
+    setDraftEnv(
+      envRows.map((row, position) =>
+        position === index ? { ...row, ...patch } : row,
+      ),
+    )
+  }
+
+  const submit = () => {
+    const seen = new Set<string>()
+    for (const row of envRows) {
+      const name = row.name.trim()
+      if (!name) {
+        if (row.value.trim()) {
+          toast.error('环境变量名不能为空')
+          return
+        }
+        continue
+      }
+      if (!name.toUpperCase().startsWith('UV_')) {
+        toast.error(`环境变量名 ${name} 需要以 UV_ 开头`)
+        return
+      }
+      const key = name.toUpperCase()
+      if (seen.has(key)) {
+        toast.error(`环境变量 ${name} 重复`)
+        return
+      }
+      seen.add(key)
+    }
+    // 两个路径变量决定解释器与缓存的位置，清空会让 uv 找不到目录。
+    for (const name of lockedNames) {
+      const row = envRows.find(
+        (candidate) => candidate.name.trim().toUpperCase() === name,
+      )
+      if (!row || !row.value.trim()) {
+        toast.error(`${name} 不能为空，它决定 uv 的 Python / 缓存目录`)
+        return
+      }
+    }
+    saveMutation.mutate()
+  }
+
+  const saveDisabled = settingsQuery.isPending || settingsQuery.isError
+
+  return (
+    <Modal
+      open={open}
+      onClose={onClose}
+      title="uv 配置"
+      size="lg"
+      className="uv-settings-modal"
+      footer={
+        <>
+          <Button variant="secondary" onClick={onClose}>
+            关闭
+          </Button>
+          <Button
+            type="submit"
+            form="uv-settings-form"
+            loading={saveMutation.isPending}
+            disabled={saveDisabled}
+          >
+            保存设置
+          </Button>
+        </>
+      }
+    >
+      {settingsQuery.isError ? (
+        <Result
+          status="error"
+          title="uv 设置加载失败"
+          description={settingsQuery.error.message}
+          actions={
+            <Button
+              variant="secondary"
+              onClick={() => void settingsQuery.refetch()}
+            >
+              重试
+            </Button>
+          }
+        />
+      ) : settingsQuery.isPending ? (
+        <div className="state-block">
+          <Spinner label="正在读取 uv 设置" />
+          <Text tone="sub">正在检测 uv...</Text>
+        </div>
+      ) : (
+        <form
+          id="uv-settings-form"
+          className="uv-settings"
+          noValidate
+          onSubmit={(event) => {
+            event.preventDefault()
+            submit()
+          }}
+        >
+          <Tabs
+            className="uv-tabs"
+            variant="line"
+            items={[
+              { key: 'binary', label: 'uv 可执行文件' },
+              { key: 'env', label: `环境变量（${envRows.length}）` },
+              { key: 'python', label: `Python 解释器（${pythons.length}）` },
+            ]}
+            activeKey={activeTab}
+            onChange={(key) => setActiveTab(key as UvTab)}
+          />
+
+          {activeTab === 'binary' ? (
+            <section
+              className="uv-section"
+              role="tabpanel"
+              aria-label="uv 可执行文件设置"
+            >
+              <RadioGroup
+                direction="row"
+                options={SOURCE_OPTIONS}
+                value={source}
+                onChange={(value) => setDraftSource(value as UvSource)}
+              />
+
+            <div className="uv-path-row">
+              {source === 'managed' ? (
+                // 程序目录的 uv 是固定位置，只展示、不可编辑；只有「指定路径」能改。
+                <div className="uv-path-static" title={managedPath}>
+                  <Icon name="lock_line" />
+                  <span className="uv-path-static-text">{managedPath}</span>
+                </div>
+              ) : (
+                <Input
+                  value={customPath}
+                  onChange={(event) => setDraftCustomPath(event.target.value)}
+                  className="mono-input"
+                  aria-label="uv 可执行文件"
+                  placeholder="D:\\tools\\uv\\uv.exe"
+                  spellCheck={false}
+                />
+              )}
+              {source === 'managed' ? (
+                uvReady ? null : (
+                  <Button
+                    size="sm"
+                    variant="secondary"
+                    onClick={() => downloadMutation.mutate()}
+                    loading={downloadMutation.isPending}
+                  >
+                    下载 uv
+                  </Button>
+                )
+              ) : (
+                <Button
+                  size="sm"
+                  variant="secondary"
+                  onClick={() => setPickerOpen(true)}
+                >
+                  浏览
+                </Button>
+              )}
+            </div>
+
+            <Text size="xs" tone="muted">
+              {source === 'managed'
+                ? uvReady
+                  ? '程序目录里的 uv，随发布目录整体搬走。'
+                  : '没装 uv 时可以从下面的镜像下载当前架构的版本，校验 sha256 后放进程序目录并自动切换。'
+                : '填 uv.exe 的完整路径，或点「浏览」选择；保存时会校验它能否运行。'}
+            </Text>
+
+            <FormField
+              label="下载镜像"
+              htmlFor="uv-mirror-url"
+              hint="GitHub Release 镜像根：uv 本体与 Python 解释器都从这里下载，留空用内置默认。解释器地址也可以用下面的 UV_PYTHON_INSTALL_MIRROR 单独覆盖。"
+            >
+              <Input
+                id="uv-mirror-url"
+                value={mirrorUrl}
+                onChange={(event) => setDraftMirror(event.target.value)}
+                className="mono-input"
+                placeholder="https://mirrors.ustc.edu.cn/github-release"
+                spellCheck={false}
+              />
+            </FormField>
+            </section>
+          ) : activeTab === 'env' ? (
+            <section
+              className="uv-section"
+              role="tabpanel"
+              aria-label="UV 环境变量"
+            >
+              <div className="uv-panel-head">
+                <Text size="xs" tone="muted">
+                  共 {envRows.length} 项
+                </Text>
+                <TextButton
+                  onClick={() =>
+                    setDraftEnv([...envRows, { name: '', value: '' }])
+                  }
+                >
+                  + 添加变量
+                </TextButton>
+              </div>
+
+            <Text size="xs" tone="muted">
+              UV_PYTHON_INSTALL_DIR、UV_CACHE_DIR 决定解释器和缓存放在哪，
+              UV_PYTHON_INSTALL_MIRROR 决定解释器从哪下载；这三项只能改值、不能删除。
+              其余 UV_* 变量会注入到每一次 uv 调用，路径类可填相对程序目录的值。
+            </Text>
+
+            {envRows.length === 0 ? (
+              <Text size="sm" tone="muted">
+                没有额外环境变量
+              </Text>
+            ) : (
+              <div className="uv-env-rows">
+                {envRows.map((row, index) => {
+                  const locked = isLockedName(row.name)
+                  const isMirror =
+                    row.name.trim().toUpperCase() ===
+                    'UV_PYTHON_INSTALL_MIRROR'
+
+                  return (
+                    <div className="uv-env-row" key={index}>
+                      {locked ? (
+                        <span
+                          className="uv-env-locked"
+                          title={
+                            isMirror
+                              ? '解释器的下载源，不能删除；改值即可换镜像'
+                              : '决定 uv 的 Python / 缓存目录，不能删除'
+                          }
+                        >
+                          <Icon name="lock_line" />
+                          <span className="uv-env-locked-name">{row.name}</span>
+                        </span>
+                      ) : (
+                        <Input
+                          value={row.name}
+                          onChange={(event) =>
+                            updateEnvRow(index, { name: event.target.value })
+                          }
+                          className="mono-input"
+                          placeholder="UV_HTTP_TIMEOUT"
+                          spellCheck={false}
+                          aria-label={`环境变量名 ${index + 1}`}
+                        />
+                      )}
+                      <Input
+                        value={row.value}
+                        onChange={(event) =>
+                          updateEnvRow(index, { value: event.target.value })
+                        }
+                        className="mono-input"
+                        placeholder={
+                          locked && !isMirror
+                            ? '相对于程序目录，或绝对路径'
+                            : '值'
+                        }
+                        spellCheck={false}
+                        aria-label={`环境变量值 ${index + 1}`}
+                      />
+                      {locked ? (
+                        <Text size="xs" tone="muted">
+                          固定
+                        </Text>
+                      ) : (
+                        <TextButton
+                          tone="danger"
+                          onClick={() =>
+                            setDraftEnv(
+                              envRows.filter(
+                                (_, position) => position !== index,
+                              ),
+                            )
+                          }
+                        >
+                          删除
+                        </TextButton>
+                      )}
+                    </div>
+                  )
+                })}
+              </div>
+            )}
+            </section>
+          ) : (
+            <section
+              className="uv-section"
+              role="tabpanel"
+              aria-label="Python 解释器设置"
+            >
+              <Text size="xs" tone="muted">
+                由 uv 下载，共 {pythons.length} 个版本。解释器放在{' '}
+                <Text className="mono" size="xs" tone="sub">
+                  {settings?.python_dir ?? 'python\\'}
+                </Text>
+                （UV_PYTHON_INSTALL_DIR）；新建虚拟环境时直接选这里的版本，不用重复下载。
+              </Text>
+
+            <Space gap="xs" align="center" wrap>
+              <Input
+                value={pythonVersion}
+                onChange={(event) => setPythonVersion(event.target.value)}
+                className="mono-input uv-version-input"
+                placeholder={PYTHON_VERSION_HINT}
+                aria-label="要下载的 Python 版本"
+                spellCheck={false}
+              />
+              <Button
+                variant="secondary"
+                loading={installMutation.isPending}
+                disabled={!uvReady}
+                title={uvReady ? undefined : '请先安装或指定 uv'}
+                onClick={() => {
+                  if (!pythonVersion.trim()) {
+                    toast.error('请填写要下载的 Python 版本，例如 3.12')
+                    return
+                  }
+                  installMutation.mutate()
+                }}
+              >
+                下载 Python
+              </Button>
+              {installMutation.isPending ? (
+                <Text size="xs" tone="muted">
+                  正在下载，可能需要几十秒...
+                </Text>
+              ) : null}
+            </Space>
+
+            {pythonsQuery.isError ? (
+              <Notice
+                tone="error"
+                title="解释器列表读取失败"
+                action={{
+                  label: '重试',
+                  onClick: () => void pythonsQuery.refetch(),
+                }}
+              >
+                {pythonsQuery.error.message}
+              </Notice>
+            ) : pythonsQuery.isPending ? (
+              uvReady ? (
+                <div className="uv-inline-state">
+                  <Spinner size="sm" label="正在读取解释器" />
+                  <Text size="sm" tone="muted">
+                    正在读取解释器...
+                  </Text>
+                </div>
+              ) : (
+                <Text size="sm" tone="muted">
+                  先在上面安装或指定 uv，装好之后才能下载解释器。
+                </Text>
+              )
+            ) : pythons.length === 0 ? (
+              <Empty
+                className="uv-empty"
+                text="还没有下载解释器。填一个版本号（例如 3.12）后点「下载 Python」。"
+              />
+            ) : (
+              <ul className="uv-python-list">
+                {pythons.map((python) => (
+                  <li className="uv-python-item" key={python.version}>
+                    <Text strong className="uv-python-version">
+                      {python.version}
+                    </Text>
+                    <code
+                      className="code-chip uv-python-path"
+                      title={python.path}
+                    >
+                      {python.path}
+                    </code>
+                  </li>
+                ))}
+              </ul>
+            )}
+            </section>
+          )}
+        </form>
+      )}
+
+      <DirectoryPickerDialog
+        open={pickerOpen}
+        initialPath={directoryOf(customPath)}
+        mode="file"
+        fileExtensions={['.exe']}
+        title="选择 uv 可执行文件"
+        onSelect={(path) => setDraftCustomPath(path)}
+        onClose={() => setPickerOpen(false)}
+      />
+    </Modal>
+  )
+}

frontend/src/components/UvSettingsSection.tsx

@@ -1,335 +0,0 @@
-import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
-import {
-  Button,
-  FormField,
-  Icon,
-  IconButton,
-  Input,
-  Result,
-  Space,
-  Spinner,
-  Text,
-  TextButton,
-  toast,
-} from '@stash/ui'
-import { useState } from 'react'
-import {
-  downloadUv,
-  getUvSettings,
-  updateUvSettings,
-  type UvSettings,
-  type UvSource,
-} from '../api/client'
-import { shortUvVersion } from '../lib/format'
-
-const SOURCE_OPTIONS = [
-  { value: 'managed', label: '程序目录 uv' },
-  { value: 'custom', label: '指定路径' },
-]
-
-interface EnvRow {
-  name: string
-  value: string
-}
-
-function rowsFrom(
-  extraEnv: Record<string, string> | null | undefined,
-  envDefaults: Record<string, string> | null | undefined,
-): EnvRow[] {
-  const rows = Object.entries(extraEnv ?? {}).map(([name, value]) => ({
-    name,
-    value,
-  }))
-  // 没显式配置的路径变量显示成默认值那一行（相对程序目录），用户能看见也能改；
-  // 删掉这行或保持默认值就回到默认。
-  for (const [name, value] of Object.entries(envDefaults ?? {})) {
-    const configured = rows.some(
-      (row) => row.name.toUpperCase() === name.toUpperCase(),
-    )
-    if (!configured) {
-      rows.unshift({ name, value })
-    }
-  }
-  return rows
-}
-
-function envMap(rows: EnvRow[]): Record<string, string> {
-  const map: Record<string, string> = {}
-  for (const row of rows) {
-    const name = row.name.trim()
-    const value = row.value.trim()
-    if (!name && !value) {
-      continue
-    }
-    map[name] = value
-  }
-  return map
-}
-
-interface UvSettingsSectionProps {
-  onClose: () => void
-}
-
-/**
- * uv 配置：可执行文件来源 + 环境变量。
- *
- * 不读系统 PATH：只用程序目录下的 `uv\uv.exe`（下载或自己放进来），或指定路径。
- * 只在「uv 配置」弹窗里渲染，不常驻页面。
- */
-export function UvSettingsSection({ onClose }: UvSettingsSectionProps) {
-  const queryClient = useQueryClient()
-  const settingsQuery = useQuery({
-    queryKey: ['uv-settings'],
-    queryFn: ({ signal }) => getUvSettings(signal),
-  })
-  const [draftSource, setDraftSource] = useState<UvSource | null>(null)
-  const [draftCustomPath, setDraftCustomPath] = useState<string | null>(null)
-  const [draftEnv, setDraftEnv] = useState<EnvRow[] | null>(null)
-
-  const settings = settingsQuery.data
-  // 编辑过就用草稿，否则跟随服务端当前设置（保存成功后清空草稿重新对齐）。
-  const source = draftSource ?? settings?.source ?? 'managed'
-  const customPath = draftCustomPath ?? settings?.custom_path ?? ''
-  const envRows =
-    draftEnv ?? rowsFrom(settings?.extra_env, settings?.env_defaults)
-
-  const resetDrafts = () => {
-    setDraftSource(null)
-    setDraftCustomPath(null)
-    setDraftEnv(null)
-  }
-
-  const saveMutation = useMutation({
-    mutationFn: () => {
-      const extraEnv = envMap(envRows)
-      // 和默认值一样就不写死，删掉等于回到默认。
-      for (const [name, value] of Object.entries(settings?.env_defaults ?? {})) {
-        const configured = Object.keys(extraEnv).some(
-          (key) => key.toUpperCase() === name.toUpperCase(),
-        )
-        if (configured && extraEnv[name]?.trim() === value) {
-          delete extraEnv[name]
-        }
-      }
-      return updateUvSettings({
-        source,
-        custom_path: customPath.trim() || null,
-        extra_env: extraEnv,
-      })
-    },
-    onSuccess: (saved: UvSettings) => {
-      resetDrafts()
-      toast.success(
-        saved.version
-          ? `uv 设置已保存（${shortUvVersion(saved.version)}）`
-          : '已保存 uv 设置，但当前 uv 不可用',
-      )
-      void queryClient.invalidateQueries({ queryKey: ['uv-settings'] })
-    },
-    onError: (error) => toast.error(error.message),
-  })
-
-  const downloadMutation = useMutation({
-    mutationFn: () => downloadUv(),
-    onSuccess: (saved: UvSettings) => {
-      resetDrafts()
-      toast.success(
-        `已下载 ${shortUvVersion(saved.version) ?? 'uv'} 并切换到程序目录 uv`,
-      )
-      void queryClient.invalidateQueries({ queryKey: ['uv-settings'] })
-    },
-    onError: (error) => toast.error(error.message),
-  })
-
-  const updateEnvRow = (index: number, patch: Partial<EnvRow>) => {
-    setDraftEnv(
-      envRows.map((row, position) =>
-        position === index ? { ...row, ...patch } : row,
-      ),
-    )
-  }
-
-  const saveDisabled = settingsQuery.isPending || settingsQuery.isError
-
-  return (
-    <Space direction="column" gap="lg">
-      {settingsQuery.isError ? (
-        <Result
-          status="error"
-          title="uv 设置加载失败"
-          description={settingsQuery.error.message}
-          actions={
-            <Button
-              variant="secondary"
-              onClick={() => void settingsQuery.refetch()}
-            >
-              重试
-            </Button>
-          }
-        />
-      ) : settingsQuery.isPending ? (
-        <div className="state-block">
-          <Spinner label="正在读取 uv 设置" />
-          <Text tone="sub">正在检测 uv...</Text>
-        </div>
-      ) : (
-        <>
-          <div className="form-section">
-            <div className="form-section-head">
-              <Space gap="xs" align="center">
-                <Icon name="chip_line" className="form-section-icon" />
-                <Text strong>uv 可执行文件</Text>
-              </Space>
-              <Text size="xs" tone="muted">
-                必选 1 项
-              </Text>
-            </div>
-
-            <div className="chip-row">
-              {SOURCE_OPTIONS.map((option) => (
-                <Button
-                  key={option.value}
-                  size="sm"
-                  shape="pill"
-                  variant={source === option.value ? 'primary' : 'secondary'}
-                  onClick={() => setDraftSource(option.value as UvSource)}
-                >
-                  {option.label}
-                </Button>
-              ))}
-            </div>
-
-            <Text className="mono" size="xs" tone="sub">
-              {settings?.version
-                ? `当前 ${shortUvVersion(settings.version)} · ${settings.executable}`
-                : '未检测到可用的 uv'}
-            </Text>
-
-            {source === 'managed' ? (
-              <Space gap="xs" align="center" wrap>
-                <Text
-                  className="mono"
-                  size="xs"
-                  tone="muted"
-                  title={`${settings?.managed_dir ?? 'uv'}\\uv.exe`}
-                >
-                  {settings?.managed_dir ?? '程序目录'}\uv.exe
-                </Text>
-                {settings?.version ? null : (
-                  <Button
-                    size="sm"
-                    variant="secondary"
-                    onClick={() => downloadMutation.mutate()}
-                    loading={downloadMutation.isPending}
-                  >
-                    下载 uv
-                  </Button>
-                )}
-              </Space>
-            ) : (
-              <FormField
-                label="uv 可执行文件"
-                htmlFor="uv-custom-path"
-                hint="填 uv.exe 的完整路径，例如 C:\\Users\\你\\.local\\bin\\uv.exe；保存时会校验它能否运行"
-              >
-                <Input
-                  id="uv-custom-path"
-                  value={customPath}
-                  onChange={(event) => setDraftCustomPath(event.target.value)}
-                  className="mono-input"
-                  placeholder="D:\\tools\\uv\\uv.exe"
-                  spellCheck={false}
-                />
-              </FormField>
-            )}
-          </div>
-
-          <div className="form-section">
-            <div className="form-section-head">
-              <Space gap="xs" align="center">
-                <Icon name="box_line" className="form-section-icon" />
-                <Text strong>环境变量</Text>
-              </Space>
-              <Text size="xs" tone="muted">
-                可选 · 已设 {envRows.length} 项
-              </Text>
-            </div>
-
-            <Space justify="between" align="center" wrap>
-              <Text size="xs" tone="muted">
-                UV_* 变量（注入到每一次 uv 调用；路径类可填相对程序目录的路径，也可填绝对路径）
-              </Text>
-              <TextButton
-                onClick={() =>
-                  setDraftEnv([...envRows, { name: '', value: '' }])
-                }
-              >
-                + 添加变量
-              </TextButton>
-            </Space>
-
-            {envRows.length === 0 ? (
-              <Text size="sm" tone="muted">
-                没有额外环境变量
-              </Text>
-            ) : (
-              <div className="uv-env-rows">
-                {envRows.map((row, index) => (
-                  <div className="uv-env-row" key={index}>
-                    <Input
-                      value={row.name}
-                      onChange={(event) =>
-                        updateEnvRow(index, { name: event.target.value })
-                      }
-                      className="mono-input"
-                      placeholder="UV_CACHE_DIR"
-                      spellCheck={false}
-                      aria-label={`环境变量名 ${index + 1}`}
-                    />
-                    <Input
-                      value={row.value}
-                      onChange={(event) =>
-                        updateEnvRow(index, { value: event.target.value })
-                      }
-                      className="mono-input"
-                      placeholder="D:\\uv-cache"
-                      spellCheck={false}
-                      aria-label={`环境变量值 ${index + 1}`}
-                    />
-                    <TextButton
-                      tone="danger"
-                      onClick={() =>
-                        setDraftEnv(
-                          envRows.filter((_, position) => position !== index),
-                        )
-                      }
-                    >
-                      删除
-                    </TextButton>
-                  </div>
-                ))}
-              </div>
-            )}
-          </div>
-        </>
-      )}
-
-      <div className="form-actions">
-        <IconButton
-          label="关闭"
-          icon={<Icon name="close_line" />}
-          variant="soft"
-          onClick={onClose}
-        />
-        <Button
-          block
-          onClick={() => saveMutation.mutate()}
-          loading={saveMutation.isPending}
-          disabled={saveDisabled}
-        >
-          保存
-        </Button>
-      </div>
-    </Space>
-  )
-}

frontend/src/lib/taskForm.ts

@@ -84,6 +84,7 @@ export function detectScriptLanguage(interpreter: string): ScriptLanguage {
 export interface TaskFormValues {
   id: string
   name: string
+  description: string
   cron: string
   timezone: string
   timeout_secs: number
@@ -142,6 +143,10 @@ export const taskFormSchema = z
       .trim()
       .min(1, '请输入任务名称')
       .max(120, '任务名称不能超过 120 个字符'),
+    description: z
+      .string()
+      .trim()
+      .max(500, '任务说明不能超过 500 个字符'),
     cron: z
       .string()
       .trim()
@@ -227,6 +232,7 @@ export function createEmptyTaskFormValues(): TaskFormValues {
   return {
     id: '',
     name: '',
+    description: '',
     cron: '0 0 2 * * *',
     timezone: 'Asia/Shanghai',
     timeout_secs: 300,
@@ -261,6 +267,7 @@ export function taskToFormValues(task: Task): TaskFormValues {
   const values = createEmptyTaskFormValues()
   values.id = task.id
   values.name = task.name
+  values.description = task.description ?? ''
   values.cron = task.cron
   values.timezone = task.timezone
   values.timeout_secs = task.timeout_secs
@@ -359,15 +366,11 @@ export function valuesToUpdateRequest(
 ): UpdateTaskRequest {
   return {
     name: values.name.trim(),
+    description: values.description.trim(),
     cron: values.cron.trim(),
     timezone: values.timezone.trim(),
     timeout_secs: values.timeout_secs,
     enabled: values.enabled,
-    concurrency_policy: 'skip',
-    retry_policy: {
-      max_attempts: 0,
-      delay_secs: 0,
-    },
     action: valuesToAction(values),
   }
 }

frontend/src/pages/TaskDashboard.tsx

@@ -11,7 +11,6 @@ import {
   Empty,
   Modal,
   Notice,
-  Pagination,
   Result,
   SearchField,
   Select,
@@ -33,6 +32,7 @@ import {
   fetchStats,
   getUvSettings,
   listManagedEnvs,
+  listPythons,
   listPythonMirrors,
   listTasks,
   runTask,
@@ -45,11 +45,11 @@ import {
 import { ConfirmDialog } from '../components/ConfirmDialog'
 import { PythonEnvsSection } from '../components/PythonEnvsSection'
 import { PythonMirrorsSection } from '../components/PythonMirrorsSection'
-import { PythonRuntimeSection } from '../components/PythonRuntimeSection'
 import { RunLogDrawer } from '../components/RunLogDrawer'
 import { EnabledBadge } from '../components/StatusBadge'
+import { TaskDetailModal } from '../components/TaskDetailModal'
 import { TaskEditorModal } from '../components/TaskEditorModal'
-import { UvSettingsSection } from '../components/UvSettingsSection'
+import { UvSettingsModal } from '../components/UvSettingsModal'
 import {
   actionTypeLabel,
   formatShortDateTime,
@@ -62,7 +62,7 @@ import {
   valuesToUpdateRequest,
 } from '../lib/taskForm'
 
-const PAGE_SIZE = 20
+const MAX_TASKS = 100
 
 const ENABLED_OPTIONS = [
   { value: '', label: '全部状态' },
@@ -77,12 +77,12 @@ const ACTION_TYPE_OPTIONS = [
   { value: 'process', label: '进程' },
 ]
 
-/// 中间栏按任务类型分组，和顶部筛选配合使用。
-const TASK_GROUPS: Array<{ type: TaskActionType; label: string }> = [
-  { type: 'script', label: '脚本' },
-  { type: 'http', label: 'HTTP 请求' },
-  { type: 'process', label: '二进制程序' },
-]
+/// 列表按任务类型排在一起，类型在卡片里用标签标出。
+const TYPE_ORDER: Record<TaskActionType, number> = {
+  script: 0,
+  http: 1,
+  process: 2,
+}
 
 export function TaskDashboard() {
   const queryClient = useQueryClient()
@@ -90,14 +90,13 @@ export function TaskDashboard() {
   const q = searchParams.get('q') ?? ''
   const enabledValue = searchParams.get('enabled')
   const actionTypeValue = searchParams.get('action_type')
-  const page = Math.max(Number(searchParams.get('page') ?? 1) || 1, 1)
   const [editorOpen, setEditorOpen] = useState(false)
   const [editingTask, setEditingTask] = useState<Task | null>(null)
   const [deleteTarget, setDeleteTarget] = useState<Task | null>(null)
   const [logTask, setLogTask] = useState<Task | null>(null)
+  const [detailTask, setDetailTask] = useState<Task | null>(null)
   const [initialRunId, setInitialRunId] = useState<number | null>(null)
   const [actionError, setActionError] = useState<string | null>(null)
-  const [refreshing, setRefreshing] = useState(false)
   const [uvSettingsOpen, setUvSettingsOpen] = useState(false)
   const [mirrorSettingsOpen, setMirrorSettingsOpen] = useState(false)
   const [envManagerOpen, setEnvManagerOpen] = useState(false)
@@ -118,8 +117,8 @@ export function TaskDashboard() {
     q: q || undefined,
     enabled,
     action_type: actionType,
-    page,
-    page_size: PAGE_SIZE,
+    page: 1,
+    page_size: MAX_TASKS,
   }
 
   const healthQuery = useQuery({
@@ -154,6 +153,11 @@ export function TaskDashboard() {
     queryKey: ['managed-envs'],
     queryFn: ({ signal }) => listManagedEnvs(signal),
   })
+  const pythonsQuery = useQuery({
+    queryKey: ['managed-pythons'],
+    queryFn: ({ signal }) => listPythons(signal),
+    enabled: Boolean(uvQuery.data?.version),
+  })
 
   const nextRuns = new Map(
     (scheduleQuery.data ?? []).map((entry) => [entry.task_id, entry.next_run_at]),
@@ -162,6 +166,7 @@ export function TaskDashboard() {
     mirrorsQuery.data?.find((mirror) => mirror.is_default) ?? null
   const uv = uvQuery.data
   const managedEnvs = envsQuery.data ?? []
+  const pythonCount = pythonsQuery.data?.length ?? 0
 
   const saveMutation = useMutation({
     mutationFn: ({
@@ -227,19 +232,25 @@ export function TaskDashboard() {
     if (nextQuery === q) {
       return
     }
-    updateFilters({ q: nextQuery || undefined, page: '1' })
+    updateFilters({ q: nextQuery || undefined })
     // updateFilters 依赖当前 searchParams，每次渲染都是新的闭包；这里只跟随防抖后的输入。
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [debouncedQuery])
 
   const tasks = tasksQuery.data?.items ?? []
-  const total = tasksQuery.data?.total ?? 0
-  const totalPages = Math.max(1, Math.ceil(total / PAGE_SIZE))
-  const groups = TASK_GROUPS.map((group) => ({
-    ...group,
-    tasks: tasks.filter((task) => task.action.type === group.type),
-  })).filter((group) => group.tasks.length > 0)
-  const nearestRun = [...nextRuns.values()].sort()[0]
+  const sortedTasks = [...tasks].sort(
+    (left, right) =>
+      TYPE_ORDER[left.action.type] - TYPE_ORDER[right.action.type],
+  )
+  // 最近一次触发：取所有已注册调度里最早的 next_run_at，连带任务名一起显示
+  const nearest = (scheduleQuery.data ?? [])
+    .filter((entry): entry is { task_id: string; next_run_at: string } =>
+      Boolean(entry.next_run_at),
+    )
+    .sort((left, right) => left.next_run_at.localeCompare(right.next_run_at))[0]
+  const nearestTask = nearest
+    ? tasks.find((task) => task.id === nearest.task_id)
+    : undefined
 
   function updateFilters(changes: Record<string, string | undefined>) {
     const next = new URLSearchParams(searchParams)
@@ -263,21 +274,6 @@ export function TaskDashboard() {
     setEditorOpen(true)
   }
 
-  const refreshAll = async () => {
-    if (refreshing) {
-      return
-    }
-    setRefreshing(true)
-    try {
-      await Promise.all([
-        queryClient.invalidateQueries({ queryKey: ['tasks'] }),
-        queryClient.invalidateQueries({ queryKey: ['health'] }),
-      ])
-    } finally {
-      setRefreshing(false)
-    }
-  }
-
   return (
     <div className="dashboard">
       <div className="dashboard-head">
@@ -295,27 +291,43 @@ export function TaskDashboard() {
       {/* 左栏：用户 / 概览 / 调度 */}
       <aside className="dashboard-column dashboard-left" aria-label="概览">
         <Card padding="md">
-          <div className="user-card">
-            <div className="user-avatar">
-              <Avatar fallback="本" size="lg" tone="primary" verified />
-              <span className="user-online" />
-            </div>
-            <div className="user-meta">
-              <Space gap="xs" align="center" wrap>
-                <Text strong>本地用户</Text>
-                <Tag tone="success" shape="rounded">
-                  单机
-                </Tag>
-              </Space>
-              <Text size="xs" tone="muted">
-                永远本地模式
-                <span className="user-dot" />
+          <div className="user-profile">
+            <Avatar
+              className="user-profile-avatar"
+              fallback="本"
+              size="xl"
+              tone="primary"
+              verified
+            />
+            <div className="user-profile-name-row">
+              <Text size="lg" strong>
+                本地用户
               </Text>
+              <span className="user-profile-status" aria-hidden="true" />
             </div>
-          </div>
-          <p className="user-bio">
+            <Tag shape="pill" className="user-profile-role">
+              管理员
+            </Tag>
+            <p className="user-profile-bio">
               任务、日志和 Python 环境都保存在本机；不依赖云服务，也不会把数据发出去。
             </p>
+            <Text size="xs" tone="muted" className="user-profile-meta">
+              <span
+                className={
+                  healthQuery.isError
+                    ? 'user-profile-engine-dot is-offline'
+                    : 'user-profile-engine-dot'
+                }
+                aria-hidden="true"
+              />
+              引擎
+              {healthQuery.isPending
+                ? '检测中'
+                : healthQuery.isError
+                  ? '离线'
+                  : '在线'}
+            </Text>
+          </div>
         </Card>
 
         <Card padding="md">
@@ -339,42 +351,36 @@ export function TaskDashboard() {
               loading={statsQuery.isPending}
             />
             <DashMetric
-              label="Rust 引擎"
-              value={
-                healthQuery.isPending
-                  ? '...'
-                  : healthQuery.isError
-                    ? '离线'
-                    : '在线'
-              }
-              loading={false}
-              danger={healthQuery.isError}
+              label="HTTP 请求"
+              value={statsQuery.data?.http}
+              loading={statsQuery.isPending}
+            />
+            <DashMetric
+              label="二进制程序"
+              value={statsQuery.data?.process}
+              loading={statsQuery.isPending}
             />
           </div>
         </Card>
 
         <Card padding="md">
           <Text strong size="sm">
-            调度
-          </Text>
-          <div className="dash-kv">
-            <Text size="xs" tone="muted">
-              已启用 / 已停用
-            </Text>
-            <Text className="mono" size="sm">
-              {statsQuery.data
-                ? `${statsQuery.data.enabled} / ${statsQuery.data.total - statsQuery.data.enabled}`
-                : '--'}
-            </Text>
-          </div>
-          <div className="dash-kv">
-            <Text size="xs" tone="muted">
             最近触发
           </Text>
-            <Text size="sm">
-              {nearestRun ? formatShortDateTime(nearestRun) : '暂无'}
+          {nearest ? (
+            <div className="dash-inline">
+              <Text className="dash-inline-name" size="sm" truncate>
+                {nearestTask?.name ?? nearest.task_id}
+              </Text>
+              <Text className="dash-inline-time" size="sm">
+                {formatShortDateTime(nearest.next_run_at)}
               </Text>
             </div>
+          ) : (
+            <Text className="dash-inline-empty" size="sm" tone="muted">
+              暂无
+            </Text>
+          )}
         </Card>
       </aside>
 
@@ -388,7 +394,7 @@ export function TaskDashboard() {
               onChange={setQueryDraft}
               placeholder="搜索任务名称或 ID"
               size="md"
-              maxWidth={360}
+              maxWidth={420}
             />
             <Space gap="xs" wrap align="center">
               <Select
@@ -398,7 +404,6 @@ export function TaskDashboard() {
                 onChange={(value) =>
                   updateFilters({
                     enabled: value || undefined,
-                    page: '1',
                   })
                 }
               />
@@ -409,21 +414,9 @@ export function TaskDashboard() {
                 onChange={(value) =>
                   updateFilters({
                     action_type: value || undefined,
-                    page: '1',
                   })
                 }
               />
-              {hasFilters ? (
-                <TextButton onClick={() => setSearchParams({})}>
-                  清除筛选
-                </TextButton>
-              ) : null}
-              <TextButton
-                onClick={() => void refreshAll()}
-                disabled={refreshing}
-              >
-                刷新
-              </TextButton>
             </Space>
           </Space>
         </Card>
@@ -486,27 +479,13 @@ export function TaskDashboard() {
             />
           </Card>
         ) : (
-          <>
-            {groups.map((group) => (
-              <Card key={group.type} padding="md">
-                <Space justify="between" align="center">
-                  <Space gap="xs" align="center">
-                    <Text strong>{group.label}</Text>
-                    <Tag shape="rounded">{group.tasks.length}</Tag>
-                  </Space>
-                  <Text size="xs" tone="muted">
-                    {actionTypeLabel(group.type)}
-                  </Text>
-                </Space>
-                <div className="task-grid">
-                  {group.tasks.map((task) => (
-                    <TaskItem
+          sortedTasks.map((task) => (
+            <TaskCard
               key={task.id}
               task={task}
               nextRunAt={nextRuns.get(task.id)}
               running={
-                        runMutation.isPending &&
-                        runMutation.variables?.id === task.id
+                runMutation.isPending && runMutation.variables?.id === task.id
               }
               toggling={
                 toggleMutation.isPending &&
@@ -520,24 +499,9 @@ export function TaskDashboard() {
               onEdit={() => openEdit(task)}
               onToggle={() => toggleMutation.mutate(task)}
               onDelete={() => setDeleteTarget(task)}
+              onDetails={() => setDetailTask(task)}
             />
-                  ))}
-                </div>
-              </Card>
-            ))}
-
-            <footer className="pagination-bar">
-              <Text size="sm" tone="sub">
-                共 {total} 个任务，第 {page} / {totalPages} 页
-              </Text>
-              <Pagination
-                page={page}
-                total={total}
-                pageSize={PAGE_SIZE}
-                onChange={(next) => updateFilters({ page: String(next) })}
-              />
-            </footer>
-          </>
+          ))
         )}
       </section>
 
@@ -548,17 +512,33 @@ export function TaskDashboard() {
             <Text strong size="sm">
               uv
             </Text>
-            <TextButton onClick={() => setUvSettingsOpen(true)}>
+            <TextButton label="配置 uv" onClick={() => setUvSettingsOpen(true)}>
               配置
             </TextButton>
           </Space>
-          <div className="dash-kv">
+          <div className="dash-inline-kv">
+            <span className="dash-inline-item">
               <Text size="xs" tone="muted">
                 版本
               </Text>
               <Text className="mono" size="sm">
                 {shortUvVersion(uv?.version) ?? '未检测到'}
               </Text>
+            </span>
+            <span className="dash-inline-item">
+              <Text size="xs" tone="muted">
+                Python 解释器
+              </Text>
+              <Text size="sm">
+                {uv?.version
+                  ? pythonsQuery.isPending
+                    ? '读取中'
+                    : pythonCount === 0
+                      ? '还没有下载'
+                      : `${pythonCount} 个版本`
+                  : '需要先安装 uv'}
+              </Text>
+            </span>
           </div>
           <div className="dash-kv">
             <Text size="xs" tone="muted">
@@ -576,6 +556,19 @@ export function TaskDashboard() {
               {uv?.python_dir ?? 'python'}
             </Text>
           </div>
+          <div className="dash-kv">
+            <Text size="xs" tone="muted">
+              下载镜像
+            </Text>
+            <Text
+              className="mono"
+              size="xs"
+              tone="sub"
+              title={uv?.mirror_url ?? undefined}
+            >
+              {uv?.mirror_url ?? '默认'}
+            </Text>
+          </div>
         </Card>
 
         <Card padding="md">
@@ -583,17 +576,38 @@ export function TaskDashboard() {
             <Text strong size="sm">
               镜像源
             </Text>
-            <TextButton onClick={() => setMirrorSettingsOpen(true)}>
+            <TextButton
+              label="配置镜像源"
+              onClick={() => setMirrorSettingsOpen(true)}
+            >
               配置
             </TextButton>
           </Space>
-          <div className="dash-kv">
+          <div className="mirror-card-summary">
             <Text size="xs" tone="muted">
               当前默认镜像
             </Text>
-            <Text className="mono" size="xs" tone="sub">
-              {defaultMirror?.index_url ?? '未设置'}
+            <Text strong size="sm" truncate>
+              {defaultMirror?.name ?? '未设置默认镜像'}
             </Text>
+            <Text
+              className="mono mirror-card-url"
+              size="xs"
+              tone="sub"
+              title={defaultMirror?.index_url ?? undefined}
+            >
+              {defaultMirror?.index_url ?? 'Python 任务不会注入镜像环境变量'}
+            </Text>
+            <Text size="xs" tone="muted" className="mirror-card-inject">
+              运行时注入
+            </Text>
+            <Space gap="xs" wrap>
+              <Tag shape="rounded">PIP_INDEX_URL</Tag>
+              <Tag shape="rounded">UV_INDEX_URL</Tag>
+              {defaultMirror?.trusted_host ? (
+                <Tag shape="rounded">PIP_TRUSTED_HOST</Tag>
+              ) : null}
+            </Space>
           </div>
         </Card>
 
@@ -627,16 +641,12 @@ export function TaskDashboard() {
         </Card>
       </aside>
 
-      {/* 配置弹窗：uv 与镜像源分开，各自一个弹窗；关闭时不渲染内容，避免重复表单 */}
+      {/* 配置弹窗：uv（含解释器下载）与镜像源分开，各自一个弹窗 */}
       {uvSettingsOpen ? (
-        <Modal
+        <UvSettingsModal
           open
           onClose={() => setUvSettingsOpen(false)}
-          title="uv 配置"
-          size="lg"
-        >
-          <UvSettingsSection onClose={() => setUvSettingsOpen(false)} />
-        </Modal>
+        />
       ) : null}
 
       {mirrorSettingsOpen ? (
@@ -645,6 +655,7 @@ export function TaskDashboard() {
           onClose={() => setMirrorSettingsOpen(false)}
           title="镜像源配置"
           size="lg"
+          className="mirror-settings-modal"
           footer={
             <Button
               variant="secondary"
@@ -673,10 +684,7 @@ export function TaskDashboard() {
             </Button>
           }
         >
-          <div className="modal-stack">
-            <PythonRuntimeSection />
           <PythonEnvsSection />
-          </div>
         </Modal>
       ) : null}
 
@@ -694,6 +702,12 @@ export function TaskDashboard() {
         }}
       />
 
+      <TaskDetailModal
+        task={detailTask}
+        nextRunAt={detailTask ? nextRuns.get(detailTask.id) : undefined}
+        onClose={() => setDetailTask(null)}
+      />
+
       <RunLogDrawer
         key={`${logTask?.id ?? 'closed'}-${initialRunId ?? 'latest'}`}
         open={Boolean(logTask)}
@@ -729,16 +743,15 @@ interface DashMetricProps {
   label: string
   value: number | string | undefined
   loading: boolean
-  danger?: boolean
 }
 
-function DashMetric({ label, value, loading, danger = false }: DashMetricProps) {
+function DashMetric({ label, value, loading }: DashMetricProps) {
   return (
     <div className="dash-metric">
       <Text size="xs" tone="muted">
         {label}
       </Text>
-      <span className={danger ? 'dash-metric-value dash-metric-danger' : 'dash-metric-value'}>
+      <span className="dash-metric-value">
         {loading ? '...' : (value ?? '--')}
       </span>
     </div>
@@ -755,9 +768,10 @@ interface TaskItemProps {
   onEdit: () => void
   onToggle: () => void
   onDelete: () => void
+  onDetails: () => void
 }
 
-function TaskItem({
+function TaskCard({
   task,
   nextRunAt,
   running,
@@ -767,35 +781,51 @@ function TaskItem({
   onEdit,
   onToggle,
   onDelete,
+  onDetails,
 }: TaskItemProps) {
-  const mark = task.name.trim().charAt(0).toUpperCase() || 'T'
   return (
-    <div className="task-item">
-      <div className="task-item-main">
-        <span className={`task-item-mark task-item-mark-${task.action.type}`}>
-          {mark}
-        </span>
-        <div className="task-item-text">
+    <Card padding="sm">
+      <div className="task-card-head">
+        <EnabledBadge
+          enabled={task.enabled}
+          className="task-card-status-badge"
+        />
+        <TextButton className="task-card-detail" onClick={onDetails}>
+          详情
+        </TextButton>
+      </div>
+      <div className="task-card">
+        <div className="task-card-main">
           <Space gap="xs" align="center" wrap>
-            <Text strong>{task.name}</Text>
-            <EnabledBadge enabled={task.enabled} />
-          </Space>
-          <Text className="task-id" size="xs" tone="muted">
-            {task.id}
+            <Text className="task-card-title" size="lg" strong truncate>
+              {task.name}
             </Text>
-          <Space gap="xs" align="center" wrap>
+            <Tag shape="rounded">{actionTypeLabel(task.action.type)}</Tag>
+          </Space>
+          <Text
+            className="task-card-desc"
+            size="xs"
+            tone="muted"
+            truncate
+            title={task.description.trim() || taskTarget(task)}
+          >
+            {task.description.trim() || taskTarget(task)}
+          </Text>
+        </div>
+
+        <div className="task-card-plan">
           <code className="code-chip">{task.cron}</code>
-            <Text size="xs" tone="muted">
+          <span className="task-card-next">
             {task.enabled
               ? nextRunAt
                 ? `下次 ${formatShortDateTime(nextRunAt)}`
                 : '调度中…'
               : '未调度'}
-            </Text>
-          </Space>
+          </span>
         </div>
-      </div>
-      <Space className="task-item-actions" gap="xs" wrap justify="end">
+
+        <div className="task-card-side">
+          <Space className="task-card-actions" gap="xs" wrap justify="end">
             <TextButton disabled={running} title="立即运行" onClick={onRun}>
               {running ? '提交中' : '运行'}
             </TextButton>
@@ -809,9 +839,24 @@ function TaskItem({
             </TextButton>
           </Space>
         </div>
+      </div>
+    </Card>
   )
 }
 
+/** 卡片第二行的一句话说明：任务标识 + 它实际执行什么。 */
+function taskTarget(task: Task): string {
+  const action = task.action
+  if (action.type === 'http') {
+    return `${action.method} ${action.url}`
+  }
+  if (action.type === 'process') {
+    return action.executable
+  }
+  const directory = action.working_dir.replace(/[\\/]+$/, '')
+  return directory ? `${directory}\\${action.script}` : action.script
+}
+
 function isActionType(value: string | null): value is TaskActionType {
   return value === 'script' || value === 'http' || value === 'process'
 }