fix(access): 修正 API Key 可分配模型范围

apps/api/internal/store/access_rules.go

@@ -283,6 +283,21 @@ func (s *Store) filterCandidatesByAccessRules(ctx context.Context, user *auth.Us
 }
 
 func (s *Store) ListAccessiblePlatformModels(ctx context.Context, user *auth.User) ([]PlatformModel, error) {
+	return s.listPlatformModelsForAccessRules(ctx, user, nil)
+}
+
+// ListAPIKeyAssignablePlatformModels returns the enabled models that the
+// current user may delegate to their API keys. API-key rules are deliberately
+// excluded here: they restrict individual credentials and must not shrink the
+// resource pool that the owning user can manage.
+func (s *Store) ListAPIKeyAssignablePlatformModels(ctx context.Context, user *auth.User) ([]PlatformModel, error) {
+	if localGatewayUserID(user) == "" {
+		return nil, ErrLocalUserRequired
+	}
+	return s.listPlatformModelsForAccessRules(ctx, user, map[string]bool{"api_key": true})
+}
+
+func (s *Store) listPlatformModelsForAccessRules(ctx context.Context, user *auth.User, excludedSubjectTypes map[string]bool) ([]PlatformModel, error) {
 	accessUser, err := s.resolveCurrentAccessUser(ctx, user)
 	if err != nil {
 		return nil, err
@@ -307,7 +322,7 @@ func (s *Store) ListAccessiblePlatformModels(ctx context.Context, user *auth.Use
 			enabled = append(enabled, model)
 		}
 	}
-	return s.filterPlatformModelsByAccessRules(ctx, accessUser, enabled)
+	return s.filterPlatformModelsByAccessRules(ctx, accessUser, enabled, excludedSubjectTypes)
 }
 
 func (s *Store) ensureAPIKeyAccessRuleResourcesAllowed(ctx context.Context, user *auth.User, resources []AccessRuleResourceInput) error {
@@ -328,7 +343,7 @@ func (s *Store) ensureAPIKeyAccessRuleResourcesAllowed(ctx context.Context, user
 }
 
 func (s *Store) accessibleAccessRuleResources(ctx context.Context, user *auth.User) (map[string]bool, error) {
-	models, err := s.ListAccessiblePlatformModels(ctx, user)
+	models, err := s.ListAPIKeyAssignablePlatformModels(ctx, user)
 	if err != nil {
 		return nil, err
 	}
@@ -383,7 +398,12 @@ WHERE id = $1::uuid
 	return &next, nil
 }
 
-func (s *Store) filterPlatformModelsByAccessRules(ctx context.Context, user *auth.User, models []PlatformModel) ([]PlatformModel, error) {
+func (s *Store) filterPlatformModelsByAccessRules(
+	ctx context.Context,
+	user *auth.User,
+	models []PlatformModel,
+	excludedSubjectTypes map[string]bool,
+) ([]PlatformModel, error) {
 	if len(models) == 0 {
 		return models, nil
 	}
@@ -398,6 +418,12 @@ func (s *Store) filterPlatformModelsByAccessRules(ctx context.Context, user *aut
 	if len(rules) == 0 {
 		return models, nil
 	}
+	if len(excludedSubjectTypes) > 0 {
+		rules = filterAccessRulesBySubjectType(rules, excludedSubjectTypes)
+		if len(rules) == 0 {
+			return models, nil
+		}
+	}
 	subjects := accessRuleSubjects(user)
 	level := 0
 	if user != nil {
@@ -412,6 +438,17 @@ func (s *Store) filterPlatformModelsByAccessRules(ctx context.Context, user *aut
 	return filtered, nil
 }
 
+func filterAccessRulesBySubjectType(rules []AccessRule, excludedSubjectTypes map[string]bool) []AccessRule {
+	filtered := make([]AccessRule, 0, len(rules))
+	for _, rule := range rules {
+		if excludedSubjectTypes[rule.SubjectType] {
+			continue
+		}
+		filtered = append(filtered, rule)
+	}
+	return filtered
+}
+
 func (s *Store) listActiveAccessRulesForResources(ctx context.Context, resources []accessRuleResource) ([]AccessRule, error) {
 	values := make([]string, 0, len(resources))
 	for _, resource := range resources {

apps/api/internal/store/access_rules_test.go

@@ -0,0 +1,23 @@
+package store
+
+import "testing"
+
+func TestFilterAccessRulesBySubjectTypeExcludesAPIKeyRulesOnly(t *testing.T) {
+	rules := []AccessRule{
+		{ID: "api-key-allow", SubjectType: "api_key", Effect: "allow"},
+		{ID: "api-key-deny", SubjectType: "api_key", Effect: "deny"},
+		{ID: "user-group-allow", SubjectType: "user_group", Effect: "allow"},
+		{ID: "user-deny", SubjectType: "user", Effect: "deny"},
+		{ID: "tenant-allow", SubjectType: "tenant", Effect: "allow"},
+	}
+
+	filtered := filterAccessRulesBySubjectType(rules, map[string]bool{"api_key": true})
+	if len(filtered) != 3 {
+		t.Fatalf("filtered rule count = %d, want 3: %+v", len(filtered), filtered)
+	}
+	for _, rule := range filtered {
+		if rule.SubjectType == "api_key" {
+			t.Fatalf("api-key rule should not affect the owning user's assignable resources: %+v", rule)
+		}
+	}
+}