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

tests/server/studio-mcp-autoinject.test.ts

@@ -31,7 +31,6 @@ describe('studio MCP autoinject', () => {
   beforeEach(() => {
     vi.resetModules()
     vi.clearAllMocks()
-    delete process.env.HERMES_DESKTOP
     delete process.env.HERMES_AGENT_NODE
     delete process.env.AUTH_TOKEN
     delete process.env.HERMES_WEB_UI_DISABLE_MCP_AUTOINJECT
@@ -206,8 +205,7 @@ describe('studio MCP autoinject', () => {
     expect(updated.data.mcp_servers['hermes-studio-use'].args).toEqual([join(process.cwd(), 'bin/hermes-ui-mcp.mjs'), 'use'])
   })
 
-  it('uses the desktop runtime node for bundled MCP servers when available', async () => {
-    process.env.HERMES_DESKTOP = 'true'
+  it('uses the runtime node override for bundled MCP servers when available', async () => {
     process.env.HERMES_AGENT_NODE = '/runtime/node'
     const { injectBundledMcpServer } = await import('../../packages/server/src/services/hermes/studio-mcp-autoinject')