chore: purge retired git.tx1138.com registry host from the codebase

The tx1138 Gitea was retired as a release server 2026-06-13 and its registry
frontend is fully dead (500 on every /v2 manifest read, observed 2026-07-10).
Nothing may reference it anymore:

- registry.rs: no longer a default registry, no longer force-enabled on
  load; saved configs are stripped of it on load (same one-time migration
  treatment as the decommissioned Hetzner mirror), with a regression test.
- image_policy.rs: removed from TRUSTED_REGISTRIES — refs through the dead
  host are now refused at the pull site (rejection test added).
- api/handler: dropped the legacy catalog-proxy fallback URL.
- .gitmodules: indeedhub submodule repointed to the OVH Gitea.
- scripts, image-recipe, app-catalog data, neode-ui strings, docs, and all
  test fixtures repointed to 146.59.87.168:3000 (or neutral example hosts).
- image-versions.sh: ARCHY_REGISTRY_FALLBACK emptied (guarded consumers
  skip it); reconcile-containers.sh candidate guard hardened.

The only remaining occurrences of the host string are the strip/reject
enforcement paths and their regression tests — the code that guarantees it
is never used again.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

neode-ui/src/views/Apps.vue

@@ -348,7 +348,7 @@
 
           <div class="mt-5 rounded-xl border border-white/10 bg-white/[0.04] p-4 text-sm text-white/65">
             <p class="font-medium text-white/80 mb-2">Easy sources</p>
-            <p>Use images from Docker Hub, GHCR, git.tx1138.com, the VPS2 Gitea registry, or localhost. Good first candidates: Excalidraw, Stirling PDF, FreshRSS, Wallabag, HedgeDoc, CyberChef, Mealie, or PairDrop.</p>
+            <p>Use images from Docker Hub, GHCR, the VPS2 Gitea registry (146.59.87.168:3000), or localhost. Good first candidates: Excalidraw, Stirling PDF, FreshRSS, Wallabag, HedgeDoc, CyberChef, Mealie, or PairDrop.</p>
           </div>
 
           <div class="mt-5 flex gap-3">

neode-ui/src/views/discover/curatedApps.ts

@@ -24,7 +24,7 @@ const CATALOG_TTL = 60 * 60 * 1000 // 1 hour cache
 
 /** Catalog URLs tried in order. First success wins.
  *  Primary is the backend proxy (`/api/app-catalog`) — server-side fetch
- *  bypasses CORS on git.tx1138.com and CSP restrictions on the IP-port
+ *  bypasses CORS on the upstream Gitea and CSP restrictions on the IP-port
  *  fallback. If the backend is offline (mid-restart etc.) we fall back
  *  to the static copy baked into the frontend build. */
 const CATALOG_URLS = [

neode-ui/src/views/settings/AccountInfoSection.vue

@@ -1405,7 +1405,7 @@ init()
                 <div class="space-y-3 text-sm text-white/80 pl-3 border-l border-white/10">
                   <p>Updates survive network hiccups. Downloads now resume from exactly where a dropped connection left off, and retry up to 6 times with increasing gaps between attempts, instead of restarting from byte zero or giving up.</p>
                   <p>The download progress bar now shows real progress. Instead of a fake number that creeps to 95% and freezes, you see the actual bytes arriving, and it continues to update correctly even if you navigate away and come back.</p>
-                  <p>Update check itself retries on slow responses. If git.tx1138.com is momentarily overloaded, the node tries three times with a five-second wait between attempts before concluding you're up to date.</p>
+                  <p>Update check itself retries on slow responses. If the release server is momentarily overloaded, the node tries three times with a five-second wait between attempts before concluding you're up to date.</p>
                 </div>
               </div>
               <!-- v1.7.14-alpha -->
@@ -1591,7 +1591,7 @@ init()
                   <span class="text-xs text-white/40">Apr 11, 2026</span>
                 </div>
                 <div class="space-y-3 text-sm text-white/80 pl-3 border-l border-white/10">
-                  <p>Migrated container registry to git.tx1138.com</p>
+                  <p>Migrated container registry to the self-hosted Gitea</p>
                 </div>
               </div>
               <!-- v1.3.4 -->