feat: add website internationalization (#65)

Author: Jamesllllllllll

drizzle/0022_user_preferred_locale.sql

@@ -0,0 +1 @@
+ALTER TABLE `users` ADD `preferred_locale` text;

package-lock.json

@@ -40,6 +40,7 @@
     "db:bootstrap:remote": "node scripts/run-remote-operation.mjs db:bootstrap:remote",
     "check:staged": "lint-staged",
     "check:generated": "node scripts/generate-route-tree.mjs --check && node scripts/write-latest-migration.mjs --check",
+    "check:i18n": "node scripts/check-i18n-coverage.mjs",
     "typecheck:ci": "tsc --noEmit",
     "test:ci": "vitest run --config vitest.config.ts",
     "check:prepush": "npm run check:generated && npm run typecheck:ci && npm run test:ci",
@@ -62,6 +63,7 @@
     "@radix-ui/react-tabs": "^1.1.13",
     "@radix-ui/react-tooltip": "^1.2.8",
     "@sentry/cloudflare": "^10.45.0",
+    "@sentry/core": "^10.45.0",
     "@tanstack/react-form": "latest",
     "@tanstack/react-query": "latest",
     "@tanstack/react-query-devtools": "latest",
@@ -74,12 +76,15 @@
     "clsx": "latest",
     "cmdk": "^1.1.1",
     "drizzle-orm": "latest",
+    "i18next": "^26.0.3",
+    "i18next-icu": "^2.4.3",
     "isbot": "latest",
     "lucide-react": "^0.577.0",
     "motion": "^12.37.0",
     "radix-ui": "^1.4.3",
     "react": "latest",
     "react-dom": "latest",
+    "react-i18next": "^17.0.2",
     "tailwind-merge": "latest",
     "zod": "latest"
   },