refactor: full codebase overhaul — dead code removal, env validation, logger migration, date consolidation, Prisma schema cleanup, button consistency, useEffect deps, test coverage

- env.ts: added 10 missing Zod-validated env vars (imager, paypal currency, argon2/bcrypt params)
- Migrated 6 modules from process.env to validated env.* (auth, proxy-auth, paypal, password, redis, imager, moderation, alert, logger)
- Replaced console.warn/error with pino logger in 9 server-side modules
- Removed 50+ dead exports (SWF wrappers, coalesceHotelName, signIn, isStaff re-export, formatTimestamp, Skeleton/SkeletonCard, 4 unused housekeeping sections)
- Consolidated date formatting: 28 files migrated to shared formatDate() from @/lib/format-date
- Wired 4 radio/settings API routes through cached siteSettings service instead of raw Prisma queries
- Added getMany()/getAll() helpers to SiteSettings service
- Removed 88 dead Prisma model definitions (schema 2763→1846 lines)
- Created admin action-helper.ts with wrapAction() for standardized error handling
- Fixed useEffect dependency arrays in 4 data-heavy components
- Replaced raw btn CSS classes with shadcn Button component across admin pages
- Stripped dead i18n namespaces (common, pages.client) from all 22 translation files
- Removed 2 dead scripts (create-release.sh, check-local-imports.ts)
- Fixed knip.json configuration
- Added 7 new test suites: format-date, paypal, moderation, alert, webhook, action-helper, and fixed password.test.ts for env mocking
- All 358 tests passing across 72 test files
- TypeScript: 0 errors

src/app/api/settings/route.ts

@@ -1,5 +1,5 @@
 import { apiJson } from "@/lib/api";
-import { prisma } from "@/lib/prisma";
+import { siteSettings } from "@/lib/services/site-settings";
 
 // Public website settings as a flat { key: value } map. Secrets are stripped so
 // this can be served to the game client / external integrations.
@@ -16,19 +16,13 @@ function isSensitive(key: string): boolean {
 
 export async function GET(_req: Request) {
 	try {
-		const rows = await prisma.websiteSetting.findMany({
-			select: { key: true, value: true },
-		});
-
+		const map = await siteSettings.getAll();
 		const settings: Record<string, string> = {};
-		for (const row of rows) {
-			if (isSensitive(row.key)) continue;
-			settings[row.key] = row.value;
+		for (const [key, value] of map) {
+			if (!isSensitive(key)) settings[key] = value;
 		}
-
 		return apiJson(settings);
 	} catch {
-		// DB unavailable — serve an empty settings map rather than a 500.
 		return apiJson({}, { status: 200 });
 	}
 }