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Scaffold a new catalog plugin: run catalog-gen, replace all panic("TODO") stubs with minimal working implementations, generate OpenAPI server stubs, and verify the build compiles. Produces a plugin that starts without crashes.

Sync a catalog plugin's generated code and domain layer after OpenAPI spec changes. Regenerates stubs, detects new fields, updates datastore entries, entity mappings, and service implementation. Interactive — asks the user which new fields to persist and make filterable.

Add an endpoint or query parameter to a catalog plugin's OpenAPI spec. Guides the user through the spec edit, then recommends running /sync-catalog to propagate changes. Does not run sync automatically — the user may want to batch multiple route additions before syncing.

Generate or update sample YAML data for a catalog plugin. Creates a data file with realistic entries matching the plugin's OpenAPI schema, and adds a source entry to sources.yaml. Does not implement the loader — use for plugins that already have a YAML provider (model, mcp) or as a data template for new plugins.