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/guilds/[id]/page.tsx

@@ -2,16 +2,13 @@ import Link from "next/link";
 import { notFound, redirect } from "next/navigation";
 import { getTranslations } from "next-intl/server";
 import { disbandGuild } from "@/actions/admin-guilds";
+import { Button } from "@/components/ui/button";
 import { canAccess, getAdminContext, PERMS } from "@/lib/permissions";
+import { formatDate } from "@/lib/format-date";
 import { prisma } from "@/lib/prisma";
 
 export const dynamic = "force-dynamic";
 
-function fmt(ts: number): string {
-	if (!ts) return "—";
-	return new Date(ts * 1000).toISOString().slice(0, 16).replace("T", " ");
-}
-
 export default async function AdminGuildDetailPage({
 	params,
 }: {
@@ -97,26 +94,30 @@ export default async function AdminGuildDetailPage({
 					</div>
 				</div>
 				<div className="flex flex-wrap gap-2">
-					<Link href="/admin/guilds" className="btn btn-ghost btn-sm">
-						{t("back")}
-					</Link>
-					<Link
-						href={`/guilds/${guild.id}`}
-						className="btn btn-ghost btn-sm"
-						target="_blank"
-					>
-						{t("viewPublic")}
-					</Link>
+					<Button variant="ghost" size="sm" asChild>
+						<Link href="/admin/guilds">
+							{t("back")}
+						</Link>
+					</Button>
+					<Button variant="ghost" size="sm" asChild>
+						<Link
+							href={`/guilds/${guild.id}`}
+							target="_blank"
+						>
+							{t("viewPublic")}
+						</Link>
+					</Button>
 					{canEdit ? (
 						<form action={disbandGuild}>
 							<input type="hidden" name="id" value={guild.id} />
-							<button
+							<Button
 								type="submit"
-								className="btn btn-sm"
+								variant="ghost"
+								size="sm"
 								style={{ color: "var(--admin-error)" }}
 							>
 								{t("disband")}
-							</button>
+							</Button>
 						</form>
 					) : null}
 				</div>
@@ -151,7 +152,7 @@ export default async function AdminGuildDetailPage({
 				</div>
 				<div className="admin-card">
 					<div className="text-xs muted">{t("colCreated")}</div>
-					<div>{fmt(guild.dateCreated)}</div>
+					<div>{formatDate(new Date(guild.dateCreated * 1000))}</div>
 				</div>
 				<div className="admin-card">
 					<div className="text-xs muted">{t("colRoom")}</div>
@@ -192,7 +193,7 @@ export default async function AdminGuildDetailPage({
 											</Link>
 										</td>
 										<td className="muted">{m.levelId}</td>
-										<td className="muted">{fmt(m.memberSince)}</td>
+										<td className="muted">{formatDate(new Date(m.memberSince * 1000))}</td>
 									</tr>
 								))}
 							</tbody>

src/app/admin/guilds/page.tsx

@@ -3,17 +3,14 @@ import { redirect } from "next/navigation";
 import { getTranslations } from "next-intl/server";
 import { AdminSimplePager } from "@/components/admin/admin-simple-pager";
 import { StatusCard } from "@/components/admin/dashboard";
+import { Button } from "@/components/ui/button";
 import { calcPagination, parseListParams } from "@/lib/admin-helpers";
 import { canAccess, getAdminContext, PERMS } from "@/lib/permissions";
+import { formatDate } from "@/lib/format-date";
 import { prisma } from "@/lib/prisma";
 
 export const dynamic = "force-dynamic";
 
-function fmt(ts: number): string {
-	if (!ts) return "—";
-	return new Date(ts * 1000).toISOString().slice(0, 10);
-}
-
 export default async function AdminGuildsPage({
 	searchParams,
 }: {
@@ -122,9 +119,9 @@ export default async function AdminGuildsPage({
 					placeholder={t("searchPlaceholder")}
 					className="admin-input flex-1"
 				/>
-				<button type="submit" className="btn btn-primary btn-sm">
+				<Button type="submit" variant="default" size="sm">
 					{t("search")}
-				</button>
+				</Button>
 			</form>
 
 			<div className="grid grid-cols-[repeat(auto-fit,minmax(180px,1fr))] gap-3.5 mb-6">
@@ -187,7 +184,7 @@ export default async function AdminGuildsPage({
 											</Link>
 										</td>
 										<td>{membersByGuild.get(g.id) ?? 0}</td>
-										<td className="muted">{fmt(g.dateCreated)}</td>
+										<td className="muted">{formatDate(new Date(g.dateCreated * 1000), "date")}</td>
 									</tr>
 								))}
 							</tbody>