Add lightweight configuration lookups

internal/configuration/targets.go

@@ -147,18 +147,26 @@ func overlayProviderMap(lower, upper map[string]any) (map[string]any, error) {
 	return merged, nil
 }
 
-// GetProfile returns an independently owned indexed profile for the internal
-// runner's lookup boundary.
-func (state *loaded) GetProfile(ctx context.Context, id string) (*domain.ExecutionProfile, error) {
+func (state *loaded) lookupProfile(ctx context.Context, id string) (domain.ExecutionProfile, error) {
 	if err := ctx.Err(); err != nil {
-		return nil, err
+		return domain.ExecutionProfile{}, err
 	}
 	if state == nil {
-		return nil, fmt.Errorf("%w: %q", profilepkg.ErrProfileNotFound, id)
+		return domain.ExecutionProfile{}, fmt.Errorf("%w: %q", profilepkg.ErrProfileNotFound, id)
 	}
 	profile, found := state.indexedProfiles[id]
 	if !found {
-		return nil, fmt.Errorf("%w: %q", profilepkg.ErrProfileNotFound, id)
+		return domain.ExecutionProfile{}, fmt.Errorf("%w: %q", profilepkg.ErrProfileNotFound, id)
+	}
+	return profile, nil
+}
+
+// GetProfile returns an independently owned indexed profile for the internal
+// runner's lookup boundary.
+func (state *loaded) GetProfile(ctx context.Context, id string) (*domain.ExecutionProfile, error) {
+	profile, err := state.lookupProfile(ctx, id)
+	if err != nil {
+		return nil, err
 	}
 	target := *profile.ResolvedTarget
 	params, err := jsonvalue.CopyMap(target.ExtraParams)
@@ -170,6 +178,15 @@ func (state *loaded) GetProfile(ctx context.Context, id string) (*domain.Executi
 	return &profile, nil
 }
 
+// GetProfileIdentity returns the exact lookup ID for a captured profile
+// without copying its execution target.
+func (state *loaded) GetProfileIdentity(ctx context.Context, id string) (string, error) {
+	if _, err := state.lookupProfile(ctx, id); err != nil {
+		return "", err
+	}
+	return id, nil
+}
+
 // GetBackend returns an independently owned effective backend definition.
 func (state *loaded) GetBackend(id string) (domain.Backend, error) {
 	if state == nil {