fix(web): close final workbench interaction gaps

apps/web_v1/src/pages/projects/project-task-edit-modal.tsx

@@ -1,4 +1,4 @@
-import { Input, Modal, Select, Space, Switch, Typography } from '@arco-design/web-react'
+import { Alert, Input, Modal, Select, Space, Switch, Typography } from '@arco-design/web-react'
 import { useEffect, useMemo, useState } from 'react'
 import type { ProjectWorkspace, TaskItem } from './project-types'
 
@@ -29,13 +29,16 @@ export function ProjectTaskEditModal({
   task: TaskItem | null
   workspace: ProjectWorkspace
   onClose: () => void
-  onSubmit: (update: ProjectTaskUpdate) => void
+  onSubmit: (update: ProjectTaskUpdate) => Promise<void>
 }) {
   const tagOptions = useMemo(() => workspace.tags.filter((tag) => tag !== 'all' && tag !== '全部'), [workspace.tags])
   const [draft, setDraft] = useState<TaskDraft>({ title: '', summary: '', tag: '', completed: false })
+  const [saving, setSaving] = useState(false)
+  const [saveError, setSaveError] = useState('')
 
   useEffect(() => {
     if (!task) return
+    setSaveError('')
     setDraft({
       title: task.title,
       summary: task.summary,
@@ -44,24 +47,39 @@ export function ProjectTaskEditModal({
     })
   }, [task])
 
+  async function saveTask() {
+    if (!task || saving) return
+    setSaving(true)
+    setSaveError('')
+    try {
+      await onSubmit({
+        taskId: task.id,
+        title: draft.title.trim() || task.title,
+        summary: draft.summary.trim(),
+        tag: draft.tag.trim(),
+        completed: draft.completed,
+      })
+      onClose()
+    } catch (error) {
+      setSaveError(error instanceof Error ? error.message : '任务保存失败，请稍后重试')
+    } finally {
+      setSaving(false)
+    }
+  }
+
   return (
     <Modal
       className="action-modal"
       title="编辑计划"
       visible={Boolean(task)}
-      onCancel={onClose}
-      onOk={() => {
-        if (!task) return
-        onSubmit({
-          taskId: task.id,
-          title: draft.title.trim() || task.title,
-          summary: draft.summary.trim(),
-          tag: draft.tag.trim(),
-          completed: draft.completed,
-        })
-      }}
+      confirmLoading={saving}
+      maskClosable={!saving}
+      cancelButtonProps={{ disabled: saving }}
+      onCancel={() => { if (!saving) onClose() }}
+      onOk={() => void saveTask()}
     >
       <Space direction="vertical" size={12} className="action-form">
+        {saveError && <Alert type="error" content={saveError} />}
         <label>
           <Text>标题</Text>
           <Input value={draft.title} onChange={(title) => setDraft((value) => ({ ...value, title }))} />