修复: P1-b Dashboard统计源解耦(治翻页/筛选后统计数字错乱 H6/H7)

- 统计走后端 count_tasks 独立通道,不再 filter(state.tasks) 当前页数据

- state 加 activeTaskCount/projectTaskCounts 缓存,loadStats action 并发 count 填充 + df-data-changed task 分支联动刷新

- Dashboard loadAll 删 loadTasks 改 loadStats(不再消费 state.tasks 全量)

- ActiveProjectsPanel getProjectTaskCount 改读 store.projectTaskCounts

- 后端零改(复用已注册 count_tasks IPC + count_by_query)

src/stores/project.ts

@@ -5,6 +5,7 @@ import { createTasksStore } from './project/tasks'
 import { createIdeasStore } from './project/ideas'
 import { createWorkflowStore } from './project/workflow'
 import { state, clearError } from './project/state'
+import { taskApi } from '@/api/task'
 import type { DfDataChangedPayload, TaskQuery } from '@/api/types'
 
 // ── barrel 组合器(零行为变更,纯重构) ──
@@ -71,6 +72,9 @@ function createStore() {
         if (q !== undefined) {
           void tasksStore.loadTasks(q)
         }
+        // P1-b A0:统计走独立通道,任务变更(create/update/advance/delete)后刷新
+        // Dashboard 数字(与 Tasks 视图分页/筛选解耦,不受 q undefined 影响)
+        void loadStats()
       } else if (entity === 'idea') {
         void ideasStore.loadIdeas()
       }
@@ -90,18 +94,42 @@ function createStore() {
   }
 
   // ── 统计(跨领域,留在组合器) ──
+  // P1-b A0:activeTasks 改读 state.activeTaskCount(后端 COUNT 独立通道),
+  // 不再 filter(state.tasks) —— state.tasks 是 Tasks 视图当前筛选+分页数据,
+  // 直接 filter 会让 Dashboard 数字随 Tasks 翻页/筛选错乱。
   const stats = computed(() => ({
     ideas: state.ideas.length,
     projects: state.projects.length,
-    activeTasks: state.tasks.filter(t => t.status === 'in_progress').length,
+    activeTasks: state.activeTaskCount,
     drafts: state.ideas.filter(i => i.status === 'draft').length,
   }))
 
+  // P1-b A0:统计拉取走后端 count_tasks(独立通道),与 tasks 数组解耦。
+  // activeTaskCount = 全局 in_progress 任务数;projectTaskCounts = 各项目 in_progress 任务数。
+  // tasks 变更(create/update/delete/advance)后由 df-data-changed listener 调用刷新。
+  // 注:projectTaskCounts 依赖 state.projects 已加载 —— 调用方需保证先 loadProjects。
+  //   - Dashboard.loadAll:先 Promise.all([loadProjects, loadIdeas]) 完成再 loadStats
+  //   - df-data-changed task 分支:projects 由 onMounted 已加载,直接 loadStats 安全
+  async function loadStats() {
+    try {
+      state.activeTaskCount = await taskApi.count({ status: 'in_progress' } as TaskQuery)
+      const entries = await Promise.all(state.projects.map(p =>
+        taskApi.count({ project_id: p.id, status: 'in_progress' } as TaskQuery).then(n => [p.id, n] as const)
+      ))
+      state.projectTaskCounts = Object.fromEntries(entries)
+    } catch (e) {
+      console.error('[loadStats] 统计拉取失败', e)
+    }
+  }
+
   return reactive({
     // 状态用 getter 实时读 state —— 直接 ideas: state.ideas 会快照引用，
     // loadIdeas 等重新赋值 state.ideas 时返回对象的 ideas 属性不跟随，刷新后视图为空
     get projects() { return state.projects },
     get tasks() { return state.tasks },
+    // P1-b A0:统计缓存读口(供 ActiveProjectsPanel 读 projectTaskCounts)
+    get activeTaskCount() { return state.activeTaskCount },
+    get projectTaskCounts() { return state.projectTaskCounts },
     get ideas() { return state.ideas },
     get workflowExecutions() { return state.workflowExecutions },
     get liveEvents() { return state.liveEvents },
@@ -124,6 +152,8 @@ function createStore() {
     createTask: tasksStore.createTask,
     updateTask: tasksStore.updateTask,
     deleteTask: tasksStore.deleteTask,
+    // P1-b A0:统计独立通道(Dashboard 卡片 + ActiveProjectsPanel 各项目任务数)
+    loadStats,
     // idea actions
     loadIdeas: ideasStore.loadIdeas,
     createIdea: ideasStore.createIdea,

src/stores/project/state.ts

@@ -17,6 +17,9 @@ export const state = reactive({
   projects: [] as ProjectRecord[],
   deletedProjects: [] as ProjectRecord[],
   tasks: [] as TaskRecord[],
+  // 统计缓存,与 tasks 数组解耦,供 Dashboard,不被 Tasks 分页/筛选污染(P1-b A0)
+  activeTaskCount: 0 as number,
+  projectTaskCounts: {} as Record<string, number>,
   ideas: [] as IdeaRecord[],
   workflowExecutions: [] as WorkflowRecord[],
   liveEvents: [] as Array<WorkflowEventPayload & { _ts: number }>,