feat: 拆分任务类型并支持脚本语言联动

- 任务类型改为「执行脚本 / 发起 HTTP 请求 / 运行二进制程序」，脚本类型下新增语言选择（Python / Shell / Node / Lua）
- 语言联动表单：Python 才显示虚拟环境、解释器和 uv 状态；Shell/Node/Lua 隐藏这些字段并切换脚本标签、占位符和调用预览
- 切换语言时自动设置解释器与默认脚本，Shell 通过 cmd.exe /C 执行批处理，Node/Lua 使用对应解释器
- TaskAction 新增可选 language，旧任务按解释器推断；补 Shell 执行测试、语言切换单测与 Playwright 用例

frontend/src/components/TaskEditorModal.tsx

@@ -36,9 +36,11 @@ import { DirectoryPickerDialog } from './DirectoryPickerDialog'
 import {
   createEmptyTaskFormValues,
   mapServerFieldToFormField,
+  SCRIPT_LANGUAGE_META,
   taskFormSchema,
   taskToFormValues,
   type KeyValueFormValue,
+  type ScriptLanguage,
   type TaskFormValues,
 } from '../lib/taskForm'
 import { useDebouncedValue } from '../lib/useDebouncedValue'
@@ -52,11 +54,17 @@ interface TaskEditorModalProps {
 }
 
 const ACTION_TYPE_OPTIONS = [
-  { value: 'script', label: '执行脚本 (Python / Shell / Node / Lua)' },
+  { value: 'script', label: '执行脚本' },
   { value: 'http', label: '发起 HTTP 请求' },
-  { value: 'process', label: '管理常驻/独立二进制' },
+  { value: 'process', label: '运行二进制程序' },
 ]
 
+const SCRIPT_LANGUAGE_OPTIONS = (
+  Object.entries(SCRIPT_LANGUAGE_META) as Array<
+    [ScriptLanguage, (typeof SCRIPT_LANGUAGE_META)[ScriptLanguage]]
+  >
+).map(([value, meta]) => ({ value, label: meta.label }))
+
 const HTTP_METHOD_OPTIONS = [
   { value: 'GET', label: 'GET' },
   { value: 'POST', label: 'POST' },
@@ -109,6 +117,9 @@ export function TaskEditorModal({
   const cronValue = watch('cron')
   const timezoneValue = watch('timezone')
   const scriptPreview = watch('script')
+  const scriptLanguage = scriptPreview.language
+  const scriptMeta = SCRIPT_LANGUAGE_META[scriptLanguage]
+  const isPythonScript = scriptLanguage === 'python'
   // 当前只开放 Asia/Shanghai；编辑旧任务时把它已有的时区也保留成一个选项，
   // 避免下拉显示成空值。
   const timezoneOptions = Array.from(
@@ -147,12 +158,42 @@ export function TaskEditorModal({
       Boolean(debouncedTimezone.trim()),
     retry: false,
   })
+  const applyScriptLanguage = (language: ScriptLanguage) => {
+    const meta = SCRIPT_LANGUAGE_META[language]
+    const currentScript = getValues('script.script').trim()
+    const knownDefaults = Object.values(SCRIPT_LANGUAGE_META).map(
+      (item) => item.defaultScript,
+    )
+    setValue('script.language', language, {
+      shouldDirty: true,
+      shouldValidate: true,
+    })
+    setValue('script.interpreter', meta.defaultInterpreter, {
+      shouldDirty: true,
+      shouldValidate: true,
+    })
+    if (!currentScript || knownDefaults.includes(currentScript)) {
+      setValue('script.script', meta.defaultScript, {
+        shouldDirty: true,
+        shouldValidate: true,
+      })
+    }
+    if (language !== 'python') {
+      setValue('script.venv', '', {
+        shouldDirty: true,
+        shouldValidate: true,
+      })
+      autoVenvRef.current = ''
+    }
+  }
+
   const venvProbe = useQuery({
     queryKey: [
       'python-venv',
       debouncedWorkingDir,
       debouncedInterpreter,
       debouncedVenv,
+      scriptLanguage,
     ],
     queryFn: ({ signal }) =>
       probePythonVenv(
@@ -164,7 +205,10 @@ export function TaskEditorModal({
         signal,
       ),
     enabled:
-      open && actionType === 'script' && Boolean(debouncedWorkingDir.trim()),
+      open &&
+      actionType === 'script' &&
+      isPythonScript &&
+      Boolean(debouncedWorkingDir.trim()),
     retry: false,
     staleTime: 15_000,
   })
@@ -185,10 +229,16 @@ export function TaskEditorModal({
     },
     onError: (error) => toast.error(error.message),
   })
-  const linkedVenv = venvProbe.data?.status === 'linked' ? venvProbe.data : null
-  const previewVirtualEnv =
-    scriptPreview.venv.trim() || linkedVenv?.venv_path || ''
-  const previewInterpreter = linkedVenv?.display_path ?? null
+  const linkedVenv =
+    isPythonScript && venvProbe.data?.status === 'linked'
+      ? venvProbe.data
+      : null
+  const previewVirtualEnv = isPythonScript
+    ? scriptPreview.venv.trim() || linkedVenv?.venv_path || ''
+    : ''
+  const previewInterpreter = isPythonScript
+    ? (linkedVenv?.display_path ?? null)
+    : null
 
   const scriptArgs = useFieldArray({ control, name: 'script.args' })
   const scriptEnv = useFieldArray({ control, name: 'script.env' })
@@ -220,7 +270,7 @@ export function TaskEditorModal({
 
   // 探测到虚拟环境就自动填进「虚拟环境目录」，但用户自己改过就保留用户的值。
   useEffect(() => {
-    if (!open) {
+    if (!open || !isPythonScript) {
       return
     }
     const probe = venvProbe.data
@@ -245,7 +295,7 @@ export function TaskEditorModal({
       shouldDirty: true,
       shouldValidate: true,
     })
-  }, [debouncedVenv, debouncedWorkingDir, getValues, open, setValue, venvProbe.data])
+  }, [debouncedVenv, debouncedWorkingDir, getValues, isPythonScript, open, setValue, venvProbe.data])
 
   // 打开后把焦点给第一个可编辑字段：新建时是任务标识，编辑时 ID 已锁定，跳名称。
   // 原生 dialog 默认聚焦关闭按钮，不符合编辑表单的节奏。
@@ -475,6 +525,32 @@ export function TaskEditorModal({
           </FormField>
         </div>
 
+        {actionType === 'script' ? (
+          <div className="form-grid language-grid">
+            <FormField label="脚本语言">
+              <Controller
+                control={control}
+                name="script.language"
+                render={({ field }) => (
+                  <Select
+                    className="form-select"
+                    options={SCRIPT_LANGUAGE_OPTIONS}
+                    value={field.value}
+                    onChange={(value) =>
+                      applyScriptLanguage(value as ScriptLanguage)
+                    }
+                  />
+                )}
+              />
+            </FormField>
+            <div className="language-hint">
+              <Text size="sm" tone="sub">
+                {scriptMeta.hint}
+              </Text>
+            </div>
+          </div>
+        ) : null}
+
         {actionType === 'script' ? (
           <div className="dynamic-fields">
             <FormField
@@ -502,48 +578,52 @@ export function TaskEditorModal({
               </div>
             </FormField>
 
-            <div className="form-grid venv-grid">
-              <FormField
-                label="虚拟环境目录 (可选)"
-                htmlFor="task-venv"
-                hint="检测到虚拟环境会自动填入，可直接修改；留空则按工作目录自动探测"
-                error={errors.script?.venv?.message}
-              >
-                <Input
-                  id="task-venv"
-                  {...register('script.venv')}
-                  className="mono-input"
-                  placeholder="例如：.venv"
-                />
-              </FormField>
-              <FormField
-                label="解释器（可选）"
-                htmlFor="task-interpreter"
-                hint="Python 项目留空即可，自动使用虚拟环境里的 Python；Node / Shell 等再填"
-                error={errors.script?.interpreter?.message}
-              >
-                <Input
-                  id="task-interpreter"
-                  {...register('script.interpreter')}
-                  className="mono-input"
-                  placeholder="留空自动使用虚拟环境 Python"
-                />
-              </FormField>
-            </div>
+            {isPythonScript ? (
+              <>
+                <div className="form-grid venv-grid">
+                  <FormField
+                    label="虚拟环境目录 (可选)"
+                    htmlFor="task-venv"
+                    hint="检测到虚拟环境会自动填入，可直接修改；留空则按工作目录自动探测"
+                    error={errors.script?.venv?.message}
+                  >
+                    <Input
+                      id="task-venv"
+                      {...register('script.venv')}
+                      className="mono-input"
+                      placeholder="例如：.venv"
+                    />
+                  </FormField>
+                  <FormField
+                    label="解释器（可选）"
+                    htmlFor="task-interpreter"
+                    hint="留空自动使用虚拟环境 Python；也可以填自定义 Python 路径"
+                    error={errors.script?.interpreter?.message}
+                  >
+                    <Input
+                      id="task-interpreter"
+                      {...register('script.interpreter')}
+                      className="mono-input"
+                      placeholder="留空自动使用虚拟环境 Python"
+                    />
+                  </FormField>
+                </div>
 
-            <VenvDetectorBar
-              workingDir={debouncedWorkingDir}
-              probe={venvProbe.data}
-              pending={venvProbe.isPending}
-              failed={venvProbe.isError}
-              creating={createVenvMutation.isPending}
-              onCreate={() =>
-                createVenvMutation.mutate(scriptPreview.working_dir.trim())
-              }
-            />
+                <VenvDetectorBar
+                  workingDir={debouncedWorkingDir}
+                  probe={venvProbe.data}
+                  pending={venvProbe.isPending}
+                  failed={venvProbe.isError}
+                  creating={createVenvMutation.isPending}
+                  onCreate={() =>
+                    createVenvMutation.mutate(scriptPreview.working_dir.trim())
+                  }
+                />
+              </>
+            ) : null}
 
             <FormField
-              label="脚本文件或相对路径"
+              label={scriptMeta.scriptLabel}
               htmlFor="task-script"
               error={errors.script?.script?.message}
             >
@@ -551,7 +631,7 @@ export function TaskEditorModal({
                 id="task-script"
                 {...register('script.script')}
                 className="mono-input"
-                placeholder="main.py 或 scripts\sync.py"
+                placeholder={scriptMeta.scriptPlaceholder}
               />
             </FormField>
 
@@ -637,9 +717,11 @@ export function TaskEditorModal({
                     </div>
                   ))}
                 <div className="cli-line-cmd">
-                  {formatInterpreterPreview(scriptPreview, previewInterpreter)}{' '}
-                  {scriptPreview.script.trim() || 'main.py'}
-                  {formatArgumentPreview(scriptPreview.args)}
+                  {formatScriptCommandPreview(
+                    scriptPreview,
+                    previewInterpreter,
+                    scriptLanguage,
+                  )}
                 </div>
               </div>
             </div>
@@ -877,12 +959,53 @@ function venvFieldValue(workingDir: string, venvPath: string): string {
 
 function formatInterpreterPreview(
   script: TaskFormValues['script'],
-  linkedPythonPath?: string | null,
+  linkedPythonPath: string | null | undefined,
+  language: ScriptLanguage,
 ): string {
-  if (script.venv.trim()) {
+  if (language === 'python' && script.venv.trim()) {
     return `${script.venv.trim().replace(/[\\/]+$/, '')}\\Scripts\\python.exe`
   }
-  return linkedPythonPath ?? (script.interpreter.trim() || 'python.exe')
+  if (linkedPythonPath) {
+    return linkedPythonPath
+  }
+  if (script.interpreter.trim()) {
+    return script.interpreter.trim()
+  }
+  return language === 'python'
+    ? 'python.exe'
+    : SCRIPT_LANGUAGE_META[language].defaultInterpreter
+}
+
+function isCmdInterpreter(interpreter: string): boolean {
+  return (
+    interpreter
+      .trim()
+      .split(/[\\/]/)
+      .pop()
+      ?.toLowerCase()
+      .replace(/\.exe$/, '') === 'cmd'
+  )
+}
+
+function formatScriptCommandPreview(
+  script: TaskFormValues['script'],
+  linkedPythonPath: string | null | undefined,
+  language: ScriptLanguage,
+): string {
+  const interpreter = formatInterpreterPreview(
+    script,
+    linkedPythonPath,
+    language,
+  )
+  const file =
+    script.script.trim() || SCRIPT_LANGUAGE_META[language].defaultScript
+  const cmdPrefix =
+    language === 'shell' &&
+    isCmdInterpreter(script.interpreter) &&
+    !file.startsWith('/')
+      ? '/C '
+      : ''
+  return `${interpreter} ${cmdPrefix}${file}${formatArgumentPreview(script.args)}`
 }
 
 interface VenvDetectorBarProps {