Add build-release-branch and tag-and-release workflows

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: joeleenk

.github/workflows/build-release-branch.yml

@@ -0,0 +1,20 @@
+name: Build to "release" branch
+
+on:
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}
+  cancel-in-progress: true
+
+jobs:
+  release:
+    name: "Update release branch"
+    uses: humanmade/hm-github-actions/.github/workflows/build-and-release-node.yml@a9a243d6c42fbff4a967d7ce0a6b307bc77251b7 # v0.1.0
+    with:
+      node_version: 24
+      source_branch: main
+      release_branch: release
+      built_asset_paths: build

.github/workflows/tag-and-release.yml

@@ -0,0 +1,51 @@
+name: Tag and Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version tag (e.g., v1.0.0)'
+        required: true
+      target_branch:
+        description: 'Branch to tag (e.g., release)'
+        default: release
+        required: true
+
+jobs:
+  tag_and_release:
+    name: Tag and Release
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - name: Check if tag already exists
+        id: check_tag
+        run: |
+          if git rev-parse "refs/tags/${{ github.event.inputs.version }}" >/dev/null 2>&1; then
+            echo "Tag already exists"
+            echo "tag_exists=true" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Abort if tag exists
+        if: steps.check_tag.outputs.tag_exists == 'true'
+        run: exit 1
+
+      - name: Create and push tag
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git fetch origin ${{ github.event.inputs.target_branch }}
+          git checkout ${{ github.event.inputs.target_branch }}
+          git tag ${{ github.event.inputs.version }}
+          git push origin ${{ github.event.inputs.version }}
+
+      - name: Create GitHub Release
+        uses: ncipollo/release-action@b7eabc95ff50cbeeedec83973935c8f306dfcd0b # v1.20.0
+        with:
+          tag: ${{ github.event.inputs.version }}
+          name: ${{ github.event.inputs.version }}
+          body: "Automated release of version ${{ github.event.inputs.version }}"
+          draft: false
+          prerelease: false