Add Markdown HTML publication

internal/transform/registry.go

@@ -0,0 +1,30 @@
+package transform
+
+import "fmt"
+
+type Registry struct {
+	transformers map[string]Transformer
+}
+
+func NewRegistry() *Registry {
+	return &Registry{transformers: make(map[string]Transformer)}
+}
+
+func (r *Registry) Register(name string, transformer Transformer) error {
+	if name == "" {
+		return fmt.Errorf("transform name is required")
+	}
+	if transformer == nil {
+		return fmt.Errorf("transformer %s is nil", name)
+	}
+	if _, exists := r.transformers[name]; exists {
+		return fmt.Errorf("transform %s is already registered", name)
+	}
+	r.transformers[name] = transformer
+	return nil
+}
+
+func (r *Registry) Get(name string) (Transformer, bool) {
+	transformer, ok := r.transformers[name]
+	return transformer, ok
+}