Phase 004: remove the desktop shell, website tooling, and bundled hermes CLI

- Drop all desktop/Electron branches, scripts, and UI (title bar, pets,
  desktop bridge); LAN endpoint kind is now web/custom only
- Replace the bundled hermes CLI with user-side installation: add
  GET /api/hermes/cli-status plus a HermesMissingView onboarding guide
- Remove the version-management UI (snapshots handled by git) and prune
  dead website/mcu/claude scripts and lockfile entries

packages/client/src/utils/completion-notification.ts

@@ -5,20 +5,11 @@ interface CompletionNotificationPayload {
   tag?: string
 }
 
-interface HermesDesktopBridge {
-  isDesktop?: boolean
-  notifyCompletion?: (payload: CompletionNotificationPayload) => Promise<boolean>
-}
-
 export interface CompletionNotificationPermissionResult {
   granted: boolean
   reason?: 'unsupported' | 'insecure' | 'denied'
 }
 
-type WindowWithHermesDesktop = Window & typeof globalThis & {
-  hermesDesktop?: HermesDesktopBridge
-}
-
 function withTimeout<T>(promise: Promise<T>, timeoutMs: number, fallback: T): Promise<T> {
   return new Promise<T>((resolve) => {
     const timer = window.setTimeout(() => resolve(fallback), timeoutMs)
@@ -35,11 +26,6 @@ function withTimeout<T>(promise: Promise<T>, timeoutMs: number, fallback: T): Pr
   })
 }
 
-function desktopBridge(): HermesDesktopBridge | undefined {
-  if (typeof window === 'undefined') return undefined
-  return (window as WindowWithHermesDesktop).hermesDesktop
-}
-
 function supportsBrowserNotification(): boolean {
   return typeof window !== 'undefined' && 'Notification' in window
 }
@@ -76,12 +62,7 @@ async function showServiceWorkerNotification(payload: CompletionNotificationPayl
   }
 }
 
-export function isDesktopNotificationRuntime(): boolean {
-  return desktopBridge()?.isDesktop === true
-}
-
 export async function requestCompletionNotificationPermission(): Promise<CompletionNotificationPermissionResult> {
-  if (isDesktopNotificationRuntime()) return { granted: true }
   if (!supportsBrowserNotification()) return { granted: false, reason: 'unsupported' }
   if (!isBrowserNotificationSecureContext()) return { granted: false, reason: 'insecure' }
   if (Notification.permission === 'granted') return { granted: true }
@@ -102,16 +83,6 @@ export async function requestCompletionNotificationPermission(): Promise<Complet
 }
 
 export async function showCompletionNotification(payload: CompletionNotificationPayload): Promise<boolean> {
-  const bridge = desktopBridge()
-  if (bridge?.isDesktop && bridge.notifyCompletion) {
-    try {
-      return await bridge.notifyCompletion(payload)
-    } catch (err) {
-      console.warn('Failed to show desktop completion notification:', err)
-      return false
-    }
-  }
-
   if (!supportsBrowserNotification() || !isBrowserNotificationSecureContext() || Notification.permission !== 'granted') {
     return false
   }