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/admin/commandocentrum/page.tsx

@@ -9,21 +9,13 @@ import {
 } from "@/components/admin/dashboard";
 import { canAccess, getAdminContext, PERMS } from "@/lib/permissions";
 import { prisma } from "@/lib/prisma";
+import { formatDate } from "@/lib/format-date";
 import { rcon } from "@/lib/services/rcon";
 import { siteSettings } from "@/lib/services/site-settings";
 import { CommandocentrumControls } from "./commandocentrum-controls";
 
 export const dynamic = "force-dynamic";
 
-function formatTimestamp(ts: number | null | undefined): string {
-	if (!ts) return "";
-	return new Date(ts * 1000).toISOString().slice(0, 19).replace("T", " ");
-}
-
-function fromDate(d: Date | null | undefined): string {
-	return d ? d.toISOString().slice(0, 19).replace("T", " ") : "—";
-}
-
 function decodeStacktrace(raw: unknown): string {
 	if (raw == null) return "";
 	try {
@@ -229,7 +221,7 @@ export default async function CommandoCentrum() {
 								{activity.map((a) => (
 									<tr key={String(a.id)}>
 										<td className="text-sm theme-text-muted dark:theme-text-muted whitespace-nowrap">
-											{fromDate(a.createdAt)}
+											{formatDate(a.createdAt, "datetime-seconds")}
 										</td>
 										<td>{nameById.get(Number(a.userId)) ?? `#${a.userId}`}</td>
 										<td>
@@ -276,7 +268,7 @@ export default async function CommandoCentrum() {
 									return (
 										<tr key={e.id}>
 											<td className="text-sm theme-text-muted dark:theme-text-muted whitespace-nowrap">
-												{formatTimestamp(e.timestamp)}
+												{formatDate(e.timestamp ? new Date(e.timestamp * 1000) : null, "datetime-seconds")}
 											</td>
 											<td>{e.type}</td>
 											<td className="text-sm theme-text-muted dark:theme-text-muted whitespace-nowrap">