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)

server/routes/claude-hook.ts

@@ -2,7 +2,7 @@ import { jsonResponse, errorResponse } from '../utils/cors'
 import { PORT_TERMINAL } from '../config'
 import { existsSync, readFileSync } from 'fs'
 import { setActiveSession, getIncrementalMessages } from '../services/transcript-engine'
-import { deriveStatus, sessionState, type HookPayload } from '../services/session-state'
+import { sessionState, type HookPayload } from '../services/session-state'
 
 export async function handleClaudeHook(req: Request): Promise<Response | null> {
   if (req.method !== 'POST') return null
@@ -68,34 +68,7 @@ export async function handleClaudeHook(req: Request): Promise<Response | null> {
       console.error('[claude-hook] Failed to forward hook to terminal server:', e)
     }
 
-    // 2. Forward PermissionRequest to /claude-permission for hooks approval system
-    if (body.hook_event_name === 'PermissionRequest') {
-      try {
-        await fetch(`http://localhost:${PORT_TERMINAL}/claude-permission`, {
-          method: 'POST',
-          headers: { 'Content-Type': 'application/json' },
-          body: JSON.stringify(hookData)
-        })
-      } catch (e) {
-        console.error('[claude-hook] Failed to forward permission to terminal server:', e)
-      }
-    }
-
-    // 3. Derive status and broadcast via WebSocket
-    const derived = deriveStatus(body)
-    if (derived) {
-      try {
-        await fetch(`http://localhost:${PORT_TERMINAL}/claude-status`, {
-          method: 'POST',
-          headers: { 'Content-Type': 'application/json' },
-          body: JSON.stringify({ status: derived.status, tool: derived.tool, agent })
-        })
-      } catch (e) {
-        console.error('[claude-hook] Failed to forward status to terminal server:', e)
-      }
-    }
-
-    // 4. Incremental transcript reading for real-time chat
+    // 2. Incremental transcript reading for real-time chat
     if (body.session_id && body.transcript_path) {
       setActiveSession(agent, body.session_id, body.transcript_path as string)