feat(api): add model delete, pagination, and cors config

internal/service/sync.go

@@ -176,6 +176,25 @@ func (s *SyncService) SyncModel(m *model.Model) error {
 	return nil
 }
 
+// SyncModelDelete removes model metadata from Redis and refreshes meta:models_meta.
+func (s *SyncService) SyncModelDelete(m *model.Model) error {
+	if m == nil {
+		return fmt.Errorf("model required")
+	}
+	name := strings.TrimSpace(m.Name)
+	if name == "" {
+		return fmt.Errorf("model name required")
+	}
+	ctx := context.Background()
+	if err := s.rdb.HDel(ctx, "meta:models", name).Err(); err != nil {
+		return fmt.Errorf("delete meta:models: %w", err)
+	}
+	if err := s.refreshModelsMetaFromRedis(ctx, "db"); err != nil {
+		return err
+	}
+	return nil
+}
+
 type providerSnapshot struct {
 	ID             uint     `json:"id"`
 	Name           string   `json:"name"`

internal/service/sync_test.go

@@ -93,6 +93,26 @@ func TestSyncKey_WritesTokenID(t *testing.T) {
 	}
 }
 
+func TestSyncModelDelete_RemovesMeta(t *testing.T) {
+	mr := miniredis.RunT(t)
+	rdb := redis.NewClient(&redis.Options{Addr: mr.Addr()})
+	svc := NewSyncService(rdb)
+
+	mr.HSet("meta:models", "ns.m", `{"name":"ns.m"}`)
+
+	m := &model.Model{Name: "ns.m"}
+	if err := svc.SyncModelDelete(m); err != nil {
+		t.Fatalf("SyncModelDelete: %v", err)
+	}
+
+	if got := mr.HGet("meta:models", "ns.m"); got != "" {
+		t.Fatalf("expected meta:models entry removed, got %q", got)
+	}
+	if v := mr.HGet("meta:models_meta", "version"); v == "" {
+		t.Fatalf("expected meta:models_meta.version to be set")
+	}
+}
+
 func TestSyncProviderDelete_RemovesSnapshotAndRouting(t *testing.T) {
 	mr := miniredis.RunT(t)
 	rdb := redis.NewClient(&redis.Options{Addr: mr.Addr()})