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

internal/api/model_handler_test.go

@@ -103,3 +103,47 @@ func TestCreateModel_InvalidKind_Returns400(t *testing.T) {
 		t.Fatalf("expected 400, got %d body=%s", rr.Code, rr.Body.String())
 	}
 }
+
+func TestDeleteModel_RemovesMeta(t *testing.T) {
+	h, db, mr := newTestHandlerWithRedis(t)
+
+	r := gin.New()
+	r.POST("/admin/models", h.CreateModel)
+	r.DELETE("/admin/models/:id", h.DeleteModel)
+
+	reqBody := map[string]any{
+		"name": "ns.del",
+	}
+	b, _ := json.Marshal(reqBody)
+
+	req := httptest.NewRequest(http.MethodPost, "/admin/models", bytes.NewReader(b))
+	req.Header.Set("Content-Type", "application/json")
+	rr := httptest.NewRecorder()
+	r.ServeHTTP(rr, req)
+
+	if rr.Code != http.StatusCreated {
+		t.Fatalf("expected 201, got %d body=%s", rr.Code, rr.Body.String())
+	}
+	var created model.Model
+	if err := json.Unmarshal(rr.Body.Bytes(), &created); err != nil {
+		t.Fatalf("unmarshal: %v", err)
+	}
+
+	delReq := httptest.NewRequest(http.MethodDelete, fmt.Sprintf("/admin/models/%d", created.ID), nil)
+	delRec := httptest.NewRecorder()
+	r.ServeHTTP(delRec, delReq)
+
+	if delRec.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d body=%s", delRec.Code, delRec.Body.String())
+	}
+	if raw := mr.HGet("meta:models", "ns.del"); raw != "" {
+		t.Fatalf("expected meta:models[ns.del] removed, got %q", raw)
+	}
+	var remaining int64
+	if err := db.Model(&model.Model{}).Where("name = ?", "ns.del").Count(&remaining).Error; err != nil {
+		t.Fatalf("count: %v", err)
+	}
+	if remaining != 0 {
+		t.Fatalf("expected model deleted, got count=%d", remaining)
+	}
+}