feat: Add Ombi request filtering and search

- Add request filters UI (type, status, sort, search)
- Implement dual-layer filtering (server + client)
- Add ombiFilters utility for consistent filtering logic
- Persist filter preferences in localStorage
- Add SSE support for real-time Ombi request updates
- Add webhook endpoints for Ombi integration
- Update OpenAPI spec for new endpoints
- Add unit tests for filter logic and UI
- Add integration tests for Ombi routes

client/src/ui/tabs.js

@@ -2,7 +2,6 @@
 
 import { getActiveTab, saveActiveTab } from '../utils/storage.js';
 import { loadHistory } from './history.js';
-import { setupRequestsTab } from './requests.js';
 
 export function initTabs() {
   const downloadsTab = document.querySelector('[data-tab="downloads"]');
@@ -55,7 +54,6 @@ export function activateTab(tab) {
     if (requestsSection) requestsSection.classList.remove('hidden');
     saveActiveTab('requests');
     setupRequestsTab();
-  } else if (tab === 'history') {
     if (historyTab) historyTab.classList.add('active');
     if (historySection) historySection.classList.remove('hidden');
     saveActiveTab('history');