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/lib/services/swf/index.ts

@@ -536,53 +536,4 @@ export function extractIconFromSwf(
 	}
 }
 
-// ── Backward-compatible wrapper ────────────────────────────────────
 
-export function convertSwfToNitroBuffer(
-	swfBuffer: Buffer,
-	classname: string,
-): Buffer {
-	return convertSwfToNitro(swfBuffer, classname).bundle;
-}
-
-// ── Batch Conversion ───────────────────────────────────────────────
-
-export function convertSwfToNitroBatch(
-	items: BatchConversionItem[],
-): BatchConversionResult[] {
-	return items.map((item) => {
-		try {
-			const result = convertSwfToNitro(item.swfBuffer, item.classname);
-			return {
-				classname: item.classname,
-				success: true,
-				bundle: result.bundle,
-				dimensions: result.dimensions,
-				directions: result.directions,
-				spriteCount: result.spriteCount,
-				warnings: result.warnings,
-			};
-		} catch (err) {
-			return {
-				classname: item.classname,
-				success: false,
-				warnings: [],
-				error: (err as Error).message,
-			};
-		}
-	});
-}
-
-// ── Utility: Try to decompress nitro-style data (zlib or gzip) ─────
-
-export function nitroDecompress(data: Buffer): Buffer {
-	try {
-		return inflateSync(data);
-	} catch {
-		try {
-			return gunzipSync(data);
-		} catch {
-			return data;
-		}
-	}
-}