chore: удалить служебные артефакты из ветки

- удалены tracked build-файлы SolidStart и Playwright
- удалён устаревший Nuxt fixture для legacy mode
- добавлены ignore-правила для производных каталогов

integration/package-lock.json

@@ -2812,19 +2812,6 @@
         "typescript": "6.0.2"
       }
     },
-    "apps/nuxt": {
-      "name": "@svg-sprites-fixtures/nuxt",
-      "version": "0.0.0",
-      "dependencies": {
-        "nuxt": "4.3.1",
-        "vue": "3.5.39"
-      },
-      "devDependencies": {
-        "@gromlab/svg-sprites": "file:../../..",
-        "typescript": "6.0.2",
-        "vue-tsc": "3.3.7"
-      }
-    },
     "apps/nuxt-vite": {
       "name": "@svg-sprites-fixtures/nuxt-vite",
       "version": "0.0.0",
@@ -11955,10 +11942,6 @@
       "resolved": "apps/next-pages-webpack",
       "link": true
     },
-    "node_modules/@svg-sprites-fixtures/nuxt": {
-      "resolved": "apps/nuxt",
-      "link": true
-    },
     "node_modules/@svg-sprites-fixtures/nuxt-vite": {
       "resolved": "apps/nuxt-vite",
       "link": true