Add voice transcription admin review flow

.gitea/workflows/build-and-deploy.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   build:
-    runs-on: build-host
+    runs-on: builder
     env:
       SERVICE_NAME: backend
       IMAGE_SHA: gitea.dsrptlab.com/mapflow/backend:${{ github.sha }}
@@ -25,12 +25,6 @@ jobs:
       - name: Build and push image
         run: |
           set -euo pipefail
-          builder="builder"
-          if ! docker buildx inspect "$builder" >/dev/null 2>&1; then
-            docker buildx create --name "$builder" --driver docker-container --buildkitd-config /etc/buildkit/buildkitd.toml
-          fi
-          docker buildx use "$builder"
-          docker buildx inspect --bootstrap
           docker buildx build --push --provenance=false --tag "$IMAGE_SHA" --tag "$IMAGE_LATEST" .
 
       - name: Skip stale deployment
@@ -58,8 +52,3 @@ jobs:
             -d "$payload")"
           cat "$response_file"
           [ "$status_code" = "200" ]
-
-      - name: Prune shared BuildKit cache
-        run: |
-          set -euo pipefail
-          docker buildx prune --builder builder --all --max-used-space 40gb -f