Phase 5: scaffold Crucible (sow-tools) — dispatcher + builder shims, container, PR-first CI, fail-closed (D11, D19).

.gitea/workflows/release.yml

@@ -0,0 +1,40 @@
+# Tag a Crucible release: re-tag the already-built immutable image and attach
+# per-platform binary bundles. Tag-gated; never PR-triggered (deploy/release is
+# not a PR concern, D7). The :<sha> image from build-image is the source of truth.
+name: release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+env:
+  REGISTRY: registry.westgate.pw
+  IMAGE: sow/crucible
+
+jobs:
+  release:
+    runs-on: docker
+    container:
+      image: nixos/nix:latest
+    steps:
+      - uses: actions/checkout@v4
+        with: { fetch-depth: 0 }
+
+      - name: Build release binaries
+        run: |
+          nix develop --command bash -c '
+            set -euo pipefail
+            GOOS=linux   GOARCH=amd64 scripts/build-binaries.sh
+            mkdir -p dist
+            tar -C bin -czf "dist/crucible-linux-amd64-${GITHUB_REF_NAME}.tar.gz" .
+          '
+
+      - name: Upload release artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: crucible-${{ github.ref_name }}
+          path: dist/*
+
+      # TODO(phase-6): re-tag registry.westgate.pw/sow/crucible:<sha> as :<tag>
+      # and pin it from sow-platform releases/*.yml once the registry is live.