ci: speed up backend build and parallelize image publishing [CI]

.woodpecker/dev-image.yml

@@ -66,7 +66,7 @@ steps:
       - bash ci/build-dev-image.sh probe
     depends_on: []
 
-  # Build both node architectures in parallel; each multi-architecture index waits for both of its images.
+  # Build both node architectures in parallel; publish both indexes together after all four builds.
   - name: build-linux-arm64-agent
     image: bash
     environment:
@@ -95,7 +95,7 @@ steps:
       - bash ci/build-dev-image.sh probe arm64
     depends_on: []
 
-  - name: publish-linux-agent-multiarch
+  - name: publish-linux-node-indexes
     image: bash
     environment:
       ZOT_REGISTRY: registry.oeo.one
@@ -106,23 +106,9 @@ steps:
       RELEASE_SIGNING_KEY:
         from_secret: release_signing_key
     commands:
-      - bash ci/publish-dev-node-index.sh agent
+      - bash ci/publish-dev-node-indexes.sh
     depends_on:
       - build-linux-amd64-agent
-      - build-linux-arm64-agent
-
-  - name: publish-linux-probe-multiarch
-    image: bash
-    environment:
-      ZOT_REGISTRY: registry.oeo.one
-      ZOT_USERNAME: justme
-      ZOT_SECRET:
-        from_secret: zot_secret
-      RELEASE_API_URL: https://mo.oeo.one
-      RELEASE_SIGNING_KEY:
-        from_secret: release_signing_key
-    commands:
-      - bash ci/publish-dev-node-index.sh probe
-    depends_on:
       - build-linux-amd64-probe
+      - build-linux-arm64-agent
       - build-linux-arm64-probe