feat: publish generic agent marketplace workflows

README.md

@@ -0,0 +1,30 @@
+# Common Agent Marketplace Workflows
+
+Public reusable GitHub Actions workflows and validation actions for repositories
+that publish agent skills and plugins.
+
+This repository intentionally contains only generic marketplace automation:
+
+- skill and plugin manifest validation
+- pull-request preview archives
+- release archives and installation summaries
+
+Container, infrastructure, deployment, and environment-specific workflows are
+kept in the private `Walter0697/common-workflow` repository.
+
+## Reuse
+
+Reference the workflows from a repository workflow with a version tag or commit
+SHA, for example:
+
+```yaml
+jobs:
+  validate:
+    uses: walter-base/common-workflow/.github/workflows/agent-marketplace-ci.yaml@master
+```
+
+The validator is also available as:
+
+```yaml
+uses: walter-base/common-workflow/actions/validate-agent-marketplace@master
+```