feat: reorganize project task planning UI

apps/senlinai-acro-react/src/pages/workspace-body.tsx

@@ -55,14 +55,9 @@ export function WorkspacePage({
   const [editingTask, setEditingTask] = useState<WorkspaceTask | null>(null)
   const [draft, setDraft] = useState<TaskDraft>({ title: '', summary: '', projectId: '', tag: '', completed: false })
   const tagOptions = useMemo(() => {
-    const tags = new Set<string>()
     const selectedWorkspace = workspaces.find((workspace) => workspace.project.id === draft.projectId)
-    selectedWorkspace?.tags
-      .filter((tag) => tag !== 'all' && tag !== '全部')
-      .forEach((tag) => tags.add(tag))
-    if (draft.tag) tags.add(draft.tag)
-    return Array.from(tags)
-  }, [draft.projectId, draft.tag, workspaces])
+    return selectedWorkspace?.tags.filter((tag) => tag !== 'all' && tag !== '全部') ?? []
+  }, [draft.projectId, workspaces])
 
   useEffect(() => {
     if (!editingTask) return
@@ -74,6 +69,10 @@ export function WorkspacePage({
       completed: editingTask.completed,
     })
   }, [editingTask])
+  useEffect(() => {
+    if (!draft.tag || tagOptions.includes(draft.tag)) return
+    setDraft((value) => ({ ...value, tag: '' }))
+  }, [draft.tag, tagOptions])
   const aiSessions = workspaces.flatMap((workspace) => workspace.aiSessions)
   const notes = workspaces.flatMap((workspace) => workspace.notes)
   const urgentProjects = projects.filter((project) => project.urgent).length
@@ -180,10 +179,10 @@ export function WorkspacePage({
           <label>
             <Text>所属标签</Text>
             <Select
-              allowCreate
-              value={draft.tag}
-              placeholder="选择或输入标签"
-              onChange={(tag) => setDraft((value) => ({ ...value, tag }))}
+              allowClear
+              value={draft.tag || undefined}
+              placeholder="不设置标签"
+              onChange={(tag) => setDraft((value) => ({ ...value, tag: tag ?? '' }))}
             >
               {tagOptions.map((tag) => (
                 <Select.Option key={tag} value={tag}>{tag}</Select.Option>