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/index.ts

@@ -12,7 +12,6 @@ import { handleWhisperRoutes } from './whisper'
 import { handleRecordingsRoutes } from './recordings'
 import { handleClaudeStatus } from './claude-status'
 import { handleClaudeHook } from './claude-hook'
-import { handleClaudePermission, handleClaudePermissionRespond, handleClaudePermissionList } from './claude-permission'
 import { handleSnapshots, handleSnapshotById } from './snapshots'
 import { handleGitStatus, handleGitDiff, handleGitLog, handleGitLogCommit, handleGitCompare, handleGitBranches, handleGitCurrentBranch, handleGitTree, handleGitFile } from './git'
 import {
@@ -81,22 +80,6 @@ export async function handleRequest(req: Request): Promise<Response> {
     if (res) return res
   }
 
-  // Claude Code permission request/respond
-  if (path === '/api/claude-permission') {
-    if (req.method === 'GET') {
-      const res = await handleClaudePermissionList(req)
-      if (res) return res
-    } else {
-      const res = await handleClaudePermission(req)
-      if (res) return res
-    }
-  }
-
-  if (path === '/api/claude-permission-respond') {
-    const res = await handleClaudePermissionRespond(req)
-    if (res) return res
-  }
-
   // Components
   if (path === '/api/components') {
     const res = await handleComponents(req)