fix: disable GitHub CI/CD and resolve @swc/helpers peer dependency

- Delete .github/workflows/ci-cd.yml to stop GitHub Actions (Gitea only)
- Add @swc/helpers@^0.5.19 explicitly to satisfy next-intl's @swc/core
  peer dependency requirement (>=0.5.17), fixing npm ci on Node v20/npm v10

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package-lock.json

@@ -14,6 +14,7 @@
         "@react-three/fiber": "^9.5.0",
         "@sentry/nextjs": "^10.36.0",
         "@shadergradient/react": "^2.4.20",
+        "@swc/helpers": "^0.5.19",
         "@tiptap/extension-color": "^3.15.3",
         "@tiptap/extension-highlight": "^3.15.3",
         "@tiptap/extension-link": "^3.15.3",
@@ -4865,9 +4866,9 @@
       "license": "Apache-2.0"
     },
     "node_modules/@swc/helpers": {
-      "version": "0.5.15",
-      "resolved": "https://registry.npmjs.org/@swc/helpers/-/helpers-0.5.15.tgz",
-      "integrity": "sha512-JQ5TuMi45Owi4/BIMAJBoSQoOJu12oOk/gADqlcUL9JEdHB8vyjUSsxqeNXnmXHjYKMi2WcYtezGEEhqUI/E2g==",
+      "version": "0.5.19",
+      "resolved": "https://registry.npmjs.org/@swc/helpers/-/helpers-0.5.19.tgz",
+      "integrity": "sha512-QamiFeIK3txNjgUTNppE6MiG3p7TdninpZu0E0PbqVh1a9FNLT2FRhisaa4NcaX52XVhA5l7Pk58Ft7Sqi/2sA==",
       "license": "Apache-2.0",
       "dependencies": {
         "tslib": "^2.8.0"
@@ -13697,6 +13698,15 @@
         "react-dom": "^16.8 || ^17 || ^18 || ^19 || ^19.0.0-rc"
       }
     },
+    "node_modules/next/node_modules/@swc/helpers": {
+      "version": "0.5.15",
+      "resolved": "https://registry.npmjs.org/@swc/helpers/-/helpers-0.5.15.tgz",
+      "integrity": "sha512-JQ5TuMi45Owi4/BIMAJBoSQoOJu12oOk/gADqlcUL9JEdHB8vyjUSsxqeNXnmXHjYKMi2WcYtezGEEhqUI/E2g==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "tslib": "^2.8.0"
+      }
+    },
     "node_modules/next/node_modules/postcss": {
       "version": "8.4.31",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",