Expose profile and prompt identity listings

internal/engine/engine.go

@@ -83,6 +83,12 @@ func (o *Options) SetSchemaFile(path string) error {
 type Engine struct {
 	runner     *usecase.Runner
 	inspection configuration.Inspection
+	listing    identityInventory
+}
+
+type identityInventory interface {
+	ListProfiles(context.Context) ([]string, error)
+	ListPrompts(context.Context) ([]domain.PromptIdentity, error)
 }
 
 // New assembles an engine from facade-selected configuration and collaborators.
@@ -135,6 +141,7 @@ func New(cfg Config, options Options) (*Engine, error) {
 	return &Engine{
 		runner:     usecase.NewRunnerWithRepairer(snapshot, snapshot, reader, prompt.NewCompiledRenderer(snapshot), client, validator, usecase.NewDefaultOutputRepairer(client), manager, defaultRetries),
 		inspection: snapshot.Inspection(),
+		listing:    snapshot,
 	}, nil
 }
 
@@ -187,6 +194,14 @@ func (e *Engine) InspectRequirements(
 func (e *Engine) InspectProfile(ctx context.Context, id string) (*domain.ProfileInspection, error) {
 	return e.runner.InspectProfile(ctx, id)
 }
+
+func (e *Engine) ListProfiles(ctx context.Context) ([]string, error) {
+	return e.listing.ListProfiles(ctx)
+}
+
+func (e *Engine) ListPrompts(ctx context.Context) ([]domain.PromptIdentity, error) {
+	return e.listing.ListPrompts(ctx)
+}
 func (e *Engine) Prepare(ctx context.Context, request domain.RunRequest) (*domain.PreparedRun, error) {
 	return e.runner.Prepare(ctx, request)
 }