feat: Parent-Child TaskFlow — Delegated durch sichtbare Child-Tasks ersetzt

- Delegated State aus Board, Entities, DTOs, Frontend-Spalten und Tests entfernt
- Parent-Tasks bleiben InProgress waehrend delegierter Agentenarbeit
- Child-Tasks laufen sichtbar mit normalen States und parentTaskId
- Doku: README, Phase 3, Changelog, Controller-Kommentare angepasst
- openclaw-task-board-flow.md als Referenzdoku hinzugefuegt
- 73/73 Backend-Tests gruen, Frontend-Build gruen

frontend/src/stores/tasks.ts

@@ -4,7 +4,7 @@
  * Fetches tasks from /api/dashboard/tasks and /api/dashboard/tasks/board
  * and maps them into TaskItem[] format for the TaskStrip component.
  *
- * Board state: grouped by column (offen, inProgress, delegated, review, done, blocked)
+ * Board state: grouped by column (offen, inProgress, review, blocked, done)
  * Auto-refresh: every 30 seconds.
  */
 import { defineStore } from 'pinia'
@@ -34,10 +34,9 @@ export interface DashboardTaskDto {
 export interface BoardGroup {
   offen: DashboardTaskDto[]
   inProgress: DashboardTaskDto[]
-  delegated: DashboardTaskDto[]
   review: DashboardTaskDto[]
-  done: DashboardTaskDto[]
   blocked: DashboardTaskDto[]
+  done: DashboardTaskDto[]
 }
 
 export interface AgentWorkflowOverview {
@@ -97,10 +96,9 @@ export const useTaskStore = defineStore('tasks', {
     board: {
       offen: [] as DashboardTaskDto[],
       inProgress: [] as DashboardTaskDto[],
-      delegated: [] as DashboardTaskDto[],
       review: [] as DashboardTaskDto[],
-      done: [] as DashboardTaskDto[],
       blocked: [] as DashboardTaskDto[],
+      done: [] as DashboardTaskDto[],
     } as BoardGroup,
     boardLoading: false,
     boardError: null as string | null,
@@ -169,10 +167,9 @@ export const useTaskStore = defineStore('tasks', {
       const canonicalMap: Record<string, string> = {
         offen: 'Backlog',
         inProgress: 'In progress',
-        delegated: 'Delegated',
         review: 'Review',
-        done: 'Done',
         blocked: 'Blocked',
+        done: 'Done',
       }
 
       // Save previous state for rollback
@@ -188,7 +185,6 @@ export const useTaskStore = defineStore('tasks', {
       const task =
         findAndRemove(this.board.offen) ??
         findAndRemove(this.board.inProgress) ??
-        findAndRemove(this.board.delegated) ??
         findAndRemove(this.board.review) ??
         findAndRemove(this.board.blocked) ??
         findAndRemove(this.board.done)
@@ -322,6 +318,7 @@ export const useTaskStore = defineStore('tasks', {
       priority?: string
       assignedTo?: string
       expectedFrom?: string
+      parentTaskId?: string | null
     }) {
       try {
         const res = await apiFetch('/api/dashboard/tasks/agent', {
@@ -333,6 +330,7 @@ export const useTaskStore = defineStore('tasks', {
             priority: data.priority ?? 'Medium',
             assignedTo: data.assignedTo ?? null,
             expectedFrom: data.expectedFrom ?? null,
+            parentTaskId: data.parentTaskId ?? null,
           }),
         })
         if (!res.ok) throw new Error(`HTTP ${res.status}`)