feat(frontend): Q1+Q2 — Plugin-Routen kommen aus Manifesten, statische Duplikate entfernt

Phase Q1 (Seiten-Routen) + Q2 (Settings-Routen): Die Plugin-Manifeste sind
ab sofort die einzige Quelle fuer Plugin-Frontend-Routen. routes/index.tsx
enthaelt nur noch Core-Routen + die StartLayout-Hub-Baeume (/agents,
/automation, /logs, /help — verschachtelte Sub-Navigation).

- PluginRouteRenderer: variante 'settings' rendert settings_pages mit
  bare Sub-Segments (Descendant-Matching im /settings-Subtree); Variante
  'pages' (Default) behaelt absolute Pfade. Getrennte Entry-Listen
  verhindern Pfad-Kollisionen (settings 'mail' vs. page '/mail').
- Entfernt: 14 statische AppShell-Plugin-Routen + 9 statische
  Settings-Routen + 20 tote Lazy-Imports (search, calendar+kanban, dms,
  dms/trash, mail, mail/settings, reports, tasks, communication,
  workflows, import-export, tags, wiki, roles, users, groups,
  notifications, ai, ai-proactive, automation, documents).
- Manifeste ergaenzt: Calendar +/calendar/kanban, Tags +/tags (+ Menue-Item,
  Route war sonst unerreichbar), Automation: /workflows-Permission auf
  workflows:read (Paritaet zur ersetzten statischen Route).
- Automation: tote flache Manifest-Eintraeger fuer /agents + /automation
  entfernt (StartLayout-Hub-Baeume gewinnen diese Pfade immer — die
  Eintraege matchten nie).
- Komponenten-Map regeneriert (37 Eintraege, CalendarKanban + Tags neu).

Verifikation: tsc exit 0; production build exit 0; Vitest Dashboard +
MiniAppWindow + pluginStore 35/35; Backend-Regressionen Route-Order,
M5-MiniApps, N4-Scope, N3-Filtering 49/49; compileall sauber;
Cross-Plugin-Checker 497 Dateien / 0 verbotene Imports; ruff clean.

frontend/src/generated/pluginComponents.generated.ts

@@ -31,10 +31,9 @@ export const PLUGIN_COMPONENT_MAP: Record<string, LazyComponentFactory> = {
   '@/components/dashboard/WikiRecentWidget': () => import('@/components/dashboard/WikiRecentWidget').then((m) => ({ default: m.WikiRecentWidget })),
   '@/pages/AIAssistant': () => import('@/pages/AIAssistant').then(normalizeModule),
   '@/pages/AISettings': () => import('@/pages/AISettings').then((m) => ({ default: m.AISettingsPage })),
-  '@/pages/AgentDashboard': () => import('@/pages/AgentDashboard').then((m) => ({ default: m.AgentDashboardPage })),
-  '@/pages/AutomationDashboard': () => import('@/pages/AutomationDashboard').then((m) => ({ default: m.AutomationDashboardPage })),
   '@/pages/AutomationSettings': () => import('@/pages/AutomationSettings').then((m) => ({ default: m.AutomationSettingsPage })),
   '@/pages/Calendar': () => import('@/pages/Calendar').then(normalizeModule),
+  '@/pages/CalendarKanban': () => import('@/pages/CalendarKanban').then(normalizeModule),
   '@/pages/Communication': () => import('@/pages/Communication').then(normalizeModule),
   '@/pages/ContactDetailPage': () => import('@/pages/ContactDetailPage').then((m) => ({ default: m.ContactDetailPage })),
   '@/pages/ContactsList': () => import('@/pages/ContactsList').then((m) => ({ default: m.ContactsListPage })),
@@ -52,6 +51,7 @@ export const PLUGIN_COMPONENT_MAP: Record<string, LazyComponentFactory> = {
   '@/pages/SettingsNotifications': () => import('@/pages/SettingsNotifications').then((m) => ({ default: m.SettingsNotificationsPage })),
   '@/pages/SettingsRoles': () => import('@/pages/SettingsRoles').then((m) => ({ default: m.SettingsRolesPage })),
   '@/pages/SettingsUsers': () => import('@/pages/SettingsUsers').then((m) => ({ default: m.SettingsUsersPage })),
+  '@/pages/Tags': () => import('@/pages/Tags').then((m) => ({ default: m.TagsPage })),
   '@/pages/Tasks': () => import('@/pages/Tasks').then((m) => ({ default: m.TasksPage })),
   '@/pages/Wiki': () => import('@/pages/Wiki').then((m) => ({ default: m.WikiPage })),
   '@/pages/Workflows': () => import('@/pages/Workflows').then((m) => ({ default: m.WorkflowsPage })),