feat(ombi): Add Ombi PALDRA integration for request management

- Add OmbiRetriever extending ArrRetriever for PALDRA compliance
- Add OmbiClient for low-level Ombi API communication
- Add getOmbiInstances() to config.js following multi-instance pattern
- Register Ombi in PALDRA registry with Ombi-specific methods
- Add external ID matching (TMDB/TVDB/IMDB) to Ombi requests
- Update DownloadMatcher to be async and enrich downloads with Ombi links
- Add getOmbiLink/getOmbiSearchLink helpers to DownloadAssembler
- Implement new service icon layout (Ombi + Sonarr/Radarr icons)
- Add CSS styling for service icons
- Update dashboard routes to include Ombi configuration
- Extend OpenAPI with Ombi tag and NormalizedDownload properties
- Update documentation (README, ARCHITECTURE, SECURITY, CHANGELOG)
- Add Ombi configuration to .env.sample

server/routes/dashboard.js

@@ -11,6 +11,8 @@ const sanitizeError = require('../utils/sanitizeError');
 const TagMatcher = require('../services/TagMatcher');
 const { buildUserDownloads } = require('../services/DownloadBuilder');
 const { onHistoryUpdate, offHistoryUpdate } = require('../utils/historyFetcher');
+const arrRetrieverRegistry = require('../utils/arrRetrievers');
+const { getOmbiInstances } = require('../utils/config');
 
 
 // Track active SSE clients for disconnect cleanup
@@ -167,6 +169,11 @@ router.get('/user-downloads', requireAuth, async (req, res) => {
     const { seriesMap, moviesMap, sonarrTagMap, radarrTagMap } = buildMetadataMaps(snapshot);
     const embyUserMap = showAll ? await TagMatcher.getEmbyUsers() : new Map();
 
+    // Get Ombi configuration
+    const ombiInstances = getOmbiInstances();
+    const ombiRetriever = ombiInstances.length > 0 ? arrRetrieverRegistry.getOmbiRetrievers()[0] : null;
+    const ombiBaseUrl = ombiInstances.length > 0 ? ombiInstances[0].url : null;
+
     const userDownloads = await buildUserDownloads(snapshot, {
       username,
       usernameSanitized: user.name,
@@ -176,7 +183,9 @@ router.get('/user-downloads', requireAuth, async (req, res) => {
       moviesMap,
       sonarrTagMap,
       radarrTagMap,
-      embyUserMap
+      embyUserMap,
+      ombiRetriever,
+      ombiBaseUrl
     });
 
     res.json({
@@ -455,6 +464,11 @@ router.get('/stream', requireAuth, async (req, res) => {
       const { seriesMap, moviesMap, sonarrTagMap, radarrTagMap } = buildMetadataMaps(snapshot);
       const embyUserMap = showAll ? await TagMatcher.getEmbyUsers() : new Map();
 
+      // Get Ombi configuration
+      const ombiInstances = getOmbiInstances();
+      const ombiRetriever = ombiInstances.length > 0 ? arrRetrieverRegistry.getOmbiRetrievers()[0] : null;
+      const ombiBaseUrl = ombiInstances.length > 0 ? ombiInstances[0].url : null;
+
       const userDownloads = buildUserDownloads(snapshot, {
         username,
         usernameSanitized: user.name,
@@ -464,7 +478,9 @@ router.get('/stream', requireAuth, async (req, res) => {
         moviesMap,
         sonarrTagMap,
         radarrTagMap,
-        embyUserMap
+        embyUserMap,
+        ombiRetriever,
+        ombiBaseUrl
       });
 
       console.log(`[SSE] Sending ${userDownloads.length} downloads for ${user.name}`);