Search Sonarr/Radarr directly on Discover, full top nav, live System links

- Discover's search now hits Radarr's/Sonarr's own lookup endpoints
  directly (the same ones /add-to-radarr and /add-to-sonarr already
  use), instead of Ombi — one fewer round trip, and a result always
  resolves the same way its own Add button will. The Ombi-based
  ombi_search/_tmdb_poster helpers are gone.
- The top nav on every page but the index now lists all eight
  destinations (FULL_FASTEXT) instead of the original four; the index
  keeps the original four-entry row as its own closing line
  (HOME_FASTEXT), since its body already lists every destination once.
- System page's Transmission rows are now links to each service's own
  reverse-proxied instance (service_urls, already injected into every
  template but unused until now).

templates/system.html

@@ -7,18 +7,19 @@
 
   {#- ── Service transmission status ───────────────────────────────
       Six services, one row each, colour carrying up or down. This is
-      what the old header pills were, given room to say something. -#}
+      what the old header pills were, given room to say something. Each
+      row opens that service's own instance, via the reverse proxy. -#}
   <div class="tt-field"><span>Transmission</span></div>
   <div class="tt-rows">
-    {% for name, svc in [('Sonarr', sonarr), ('Radarr', radarr), ('SABnzbd', sabnzbd),
-                         ('Tautulli', tautulli), ('Prowlarr', prowlarr), ('Ombi', ombi)] %}
-    <div class="tt-row">
+    {% for name, key, svc in [('Sonarr', 'sonarr', sonarr), ('Radarr', 'radarr', radarr), ('SABnzbd', 'sabnzbd', sabnzbd),
+                              ('Tautulli', 'tautulli', tautulli), ('Prowlarr', 'prowlarr', prowlarr), ('Ombi', 'ombi', ombi)] %}
+    <a class="tt-row" href="{{ service_urls[key] }}" target="_blank" rel="noopener">
       <span class="tt-row-name">{{ name }}</span>
       <span class="tt-row-body"></span>
       <span class="tt-row-val {{ 'ok' if svc.status == 'ok' else 'alert' }}">
         {{- 'ON AIR' if svc.status == 'ok' else 'OFF AIR' -}}
       </span>
-    </div>
+    </a>
     {% endfor %}
   </div>