refactor: unify hook notification system, remove duplicate broadcasts

- Replace forward-hook.ps1 with notify.ps1 (now accepts optional agent param)
- Remove ejecutor settings.local.json (redundant status hooks, deriveStatus covers it)
- Remove legacy claude-permission system (route, store methods, terminal broadcast)
- Remove redundant deriveStatus + /claude-status POST from claude-hook.ts
  (broadcastClaudeHook → processHookEvent already handles status derivation)
- Clean up HookNotifications.vue permission buttons (dead code)

frontend/src/components/HookNotifications.vue

@@ -83,14 +83,8 @@ function typeClass(n: HookNotification) {
           <span v-if="n.detail" class="toast-detail">{{ n.detail }}</span>
         </div>
 
-        <!-- Permission buttons -->
-        <div v-if="n.event === 'PermissionRequest' && n.requestId" class="toast-actions">
-          <button class="toast-btn toast-btn--allow" @click="store.respondPermission(n.id, n.requestId!, 'allow')">Allow</button>
-          <button class="toast-btn toast-btn--deny" @click="store.respondPermission(n.id, n.requestId!, 'deny')">Deny</button>
-        </div>
-
         <!-- Dismiss -->
-        <button v-else class="toast-close" @click="store.remove(n.id)">&times;</button>
+        <button class="toast-close" @click="store.remove(n.id)">&times;</button>
       </div>
     </TransitionGroup>
   </Teleport>

frontend/src/stores/claude-hooks.ts

@@ -1,6 +1,5 @@
 import { ref, computed } from 'vue'
 import { defineStore } from 'pinia'
-import { apiFetch } from '@/lib/tauri'
 
 export interface HookNotification {
   id: string
@@ -11,10 +10,6 @@ export interface HookNotification {
   type: 'info' | 'success' | 'warning' | 'error'
   timestamp: number
   persistent?: boolean
-  // Permission-specific
-  requestId?: string
-  toolName?: string
-  toolInput?: unknown
 }
 
 export const useClaudeHooksStore = defineStore('claude-hooks', () => {
@@ -144,47 +139,7 @@ export const useClaudeHooksStore = defineStore('claude-hooks', () => {
     }
   }
 
-  // Process a claude-permission WS message
-  function processPermission(data: Record<string, any>) {
-    const id = `perm_${Date.now()}_${Math.random().toString(36).slice(2, 6)}`
-    const toolName = data.tool_name || 'Unknown'
-    const input = data.tool_input || {}
-    let detail = ''
-    if (toolName === 'Bash') {
-      const cmd = input.command || ''
-      detail = cmd.length > 120 ? cmd.slice(0, 120) + '...' : cmd
-    } else if (toolName === 'Edit' || toolName === 'Write') {
-      detail = input.file_path ? shortPath(input.file_path) : ''
-    } else {
-      detail = JSON.stringify(input).slice(0, 100)
-    }
-
-    add({
-      id, event: 'PermissionRequest', type: 'error',
-      icon: '', title: `Permission: ${toolName}`,
-      detail,
-      timestamp: Date.now(),
-      persistent: true,
-      requestId: data.requestId,
-      toolName,
-      toolInput: input
-    })
-  }
-
-  async function respondPermission(notifId: string, requestId: string, decision: 'allow' | 'deny') {
-    try {
-      await apiFetch('/api/claude-permission-respond', {
-        method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify({ requestId, decision })
-      })
-    } catch (e) {
-      console.error('[Hooks] Failed to respond permission:', e)
-    }
-    remove(notifId)
-  }
-
-  return { notifications, visible, add, remove, clear, processHook, processPermission, respondPermission }
+  return { notifications, visible, add, remove, clear, processHook }
 })
 
 function shortPath(p: string): string {