ci: replace build-stage.sh concatenation with elb build from ci-base

- stage.yaml and deploy.yaml now extract El SDK from ci-base (docker cp /opt/el) and run elb build to produce dist/neuron-landing
- JS El sources compiled via elc --target=js in a dedicated step, matching dev.yaml exactly
- build-stage.sh replaced with thin elb wrapper for local dev use
- Removes the broken "Set up El SDK" stub (echo EL_HOME) and old build-stage.sh invocation from both workflows

.gitea/workflows/deploy.yaml

@@ -62,10 +62,6 @@ jobs:
             echo "=> Full build required"
           fi
 
-      - name: Set up El SDK
-        if: steps.changetype.outputs.asset_only != 'true'
-        run: echo "EL_HOME=/opt/el" >> "$GITHUB_ENV"
-
       - name: Authenticate to GCP
         id: auth
         uses: google-github-actions/auth@v2
@@ -102,12 +98,60 @@ jobs:
         # in the build context for Dockerfile COPY to succeed.
         run: touch src/index.html src/about.html src/terms.html src/enterprise-terms.html
 
-      - name: Build image (build-stage.sh)
+      # ── El SDK setup ──────────────────────────────────────────────────────
+
+      - name: Extract El SDK from ci-base
         if: steps.changetype.outputs.asset_only != 'true'
-        env:
-          EXTRACT_JS: '1'
         run: |
-          ./build-stage.sh "${{ steps.tag.outputs.tag }}"
+          set -euo pipefail
+          docker pull us-central1-docker.pkg.dev/neuron-785695/neuron-ci/ci-base:latest
+          CID=$(docker create us-central1-docker.pkg.dev/neuron-785695/neuron-ci/ci-base:latest)
+          sudo mkdir -p /opt/el
+          docker cp "$CID:/opt/el" /opt/
+          docker rm "$CID"
+          echo "ELB=/opt/el/dist/bin/elb"              >> "$GITHUB_ENV"
+          echo "ELC=/opt/el/dist/platform/elc"          >> "$GITHUB_ENV"
+          echo "EL_RUNTIME=/opt/el/el-compiler/runtime" >> "$GITHUB_ENV"
+
+      # ── Build neuron-web binary ───────────────────────────────────────────
+
+      - name: Build neuron-web with elb
+        if: steps.changetype.outputs.asset_only != 'true'
+        run: |
+          set -euo pipefail
+          "$ELB" build \
+            --elc "$ELC" \
+            --runtime "$EL_RUNTIME"
+          echo "Binary: $(ls -lh dist/neuron-landing)"
+
+      # ── Compile JS client sources ─────────────────────────────────────────
+
+      - name: Compile JS El sources
+        if: steps.changetype.outputs.asset_only != 'true'
+        run: |
+          set -euo pipefail
+          cp "$EL_RUNTIME/el_runtime.js" src/js/
+          mkdir -p dist/js
+          for f in src/js/*.el; do
+            [ -f "$f" ] || continue
+            name=$(basename "$f" .el)
+            "$ELC" --target=js --bundle --minify --obfuscate "$f" > "dist/js/${name}.js"
+            echo "  compiled: $f -> dist/js/${name}.js"
+          done
+          rm -f src/js/el_runtime.js
+
+      # ── Docker build + push ───────────────────────────────────────────────
+
+      - name: Build and tag image
+        if: steps.changetype.outputs.asset_only != 'true'
+        run: |
+          set -euo pipefail
+          docker build \
+            --build-arg BUILDKIT_INLINE_CACHE=1 \
+            --cache-from us-central1-docker.pkg.dev/neuron-785695/neuron-marketing/marketing:latest \
+            -f Dockerfile.stage \
+            -t "marketing:${{ steps.tag.outputs.tag }}" \
+            .
           docker tag "marketing:${{ steps.tag.outputs.tag }}" "${{ steps.tag.outputs.image }}"
           docker tag "marketing:${{ steps.tag.outputs.tag }}" "us-central1-docker.pkg.dev/neuron-785695/neuron-marketing/marketing:latest"