chore: rimuovi deploy.sh e cache registry buildx

- scripts/deploy.sh eliminato (sostituito da deploy-noclone.sh)
- build-push.sh: rimossa cache-from/cache-to registry (cache buildx
  locale del laptop sufficiente, niente più image buildcache:* sul
  registry Gitea)
- doc cleanup riferimenti orfani

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/build-push.sh

@@ -56,15 +56,12 @@ build_one() {
 
     local tag_latest="$IMAGE_PREFIX/$name:latest"
     local tag_sha="$IMAGE_PREFIX/$name:sha-$SHA"
-    local cache_ref="$IMAGE_PREFIX/buildcache:$name"
 
     echo "=== [$name] build & push ==="
     local args=(buildx build --push
         -f "$file"
         -t "$tag_latest"
         -t "$tag_sha"
-        --cache-from "type=registry,ref=$cache_ref"
-        --cache-to   "type=registry,ref=$cache_ref,mode=max"
     )
     if [[ "$name" == mcp-* ]]; then
         args+=(--build-arg "BASE_IMAGE=$IMAGE_PREFIX/base"