Add composite action entrypoint

action.yml

@@ -0,0 +1,44 @@
+name: "WP Release CI"
+description: "Package and publish a WordPress plugin/theme release to a Gitea release + self-hosted update channel."
+
+# Consuming workflow MUST check out the source repo with fetch-depth: 0 BEFORE this
+# step (git archive + the tag validation need full history and the tag ref).
+#
+# Minimal usage:
+#   - uses: actions/checkout@v4
+#     with: { fetch-depth: 0 }
+#   - uses: wordpress/wp-release-ci@v1        # pin to a tag or SHA, not a branch
+#     with:
+#       channel_deploy_key: ${{ secrets.CHANNEL_DEPLOY_KEY }}
+#
+# GITHUB_REPOSITORY / GITHUB_REF_NAME / GITHUB_SERVER_URL / GITHUB_TOKEN are provided
+# automatically by the Actions runner and consumed by release.sh directly.
+
+inputs:
+  channel_deploy_key:
+    description: "SSH private key with WRITE access to the channel repo. Without it, the channel-publish step is skipped (Gitea release still cut)."
+    required: true
+  channel_ssh_port:
+    description: "SSH port of the Gitea host for the channel push."
+    required: false
+    default: "30009"
+  channel_branch:
+    description: "Branch of the channel repo to publish to."
+    required: false
+    default: "main"
+  channel_git_name:
+    description: "Git committer name used for the channel push."
+    required: false
+    default: "release bot"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Release via wp-release-ci
+      shell: bash
+      env:
+        CHANNEL_DEPLOY_KEY: ${{ inputs.channel_deploy_key }}
+        CHANNEL_SSH_PORT: ${{ inputs.channel_ssh_port }}
+        CHANNEL_BRANCH: ${{ inputs.channel_branch }}
+        CHANNEL_GIT_NAME: ${{ inputs.channel_git_name }}
+      run: bash "${GITHUB_ACTION_PATH}/release.sh"