refactor: migrate container registry from 80.71.235.15:3000 to git.tx1138.com/lfg2025

All hardcoded references to the old IP-based registry replaced across
Rust backend, Vue frontend, shell scripts, Dockerfiles, CI, and docs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/validate-app-manifest.sh

@@ -86,7 +86,7 @@ else
 
     # Check trusted registry
     TRUSTED=false
-    for reg in "docker.io" "ghcr.io" "quay.io" "registry.hub.docker.com" "80.71.235.15:3000"; do
+    for reg in "docker.io" "ghcr.io" "quay.io" "registry.hub.docker.com" "git.tx1138.com"; do
         if echo "$IMAGE" | grep -q "$reg"; then
             TRUSTED=true
             break