Add PromptKit catalog YAML encoders

integrations/ckprompt/command.go

@@ -322,6 +322,34 @@ func encodePromptYAML(writer io.Writer, value any) error {
 	return encoder.Encode(value)
 }
 
+type promptCatalogEntry struct {
+	ID      string `yaml:"id"`
+	Version string `yaml:"version"`
+}
+
+func encodePromptCatalog(prompts []promptkit.PromptIdentity) ([]byte, error) {
+	entries := make([]promptCatalogEntry, len(prompts))
+	for index, prompt := range prompts {
+		entries[index] = promptCatalogEntry{ID: prompt.ID, Version: prompt.Version}
+	}
+	return encodePromptYAMLBytes(entries)
+}
+
+func encodeProfileCatalog(profiles []string) ([]byte, error) {
+	if profiles == nil {
+		profiles = []string{}
+	}
+	return encodePromptYAMLBytes(profiles)
+}
+
+func encodePromptYAMLBytes(value any) ([]byte, error) {
+	var output bytes.Buffer
+	if err := encodePromptYAML(&output, value); err != nil {
+		return nil, err
+	}
+	return output.Bytes(), nil
+}
+
 func writePromptReport(invocation commandkit.Invocation, output []byte, diagnostics []commandkit.Diagnostic) commandkit.Outcome {
 	if invocation.Context != nil {
 		if err := invocation.Context.Err(); err != nil {