fix(build): keep the server logger out of client bundles

The production webpack build failed with UnhandledSchemeError: client
components imported @/lib/logger, which binds pino, AsyncLocalStorage
(node:async_hooks), node:crypto and node:fs — and validates server env on
import. The UI fixture aliased those modules, so the harness and tests
never hit it.

- add src/lib/browser-log.ts: browser-safe logger with the same interface;
  errors are forwarded to /api/diagnostics/errors via reportBrowserError
- guard src/lib/logger.ts with server-only and drop its now-dead browser
  branches
- switch the 11 client components/hooks to @/lib/browser-log

Verified with the Dockerfile's production build (pnpm run build) and the
full vitest suite.

src/components/admin/catalog/quick-add-furni.tsx

@@ -13,8 +13,8 @@ import {
 } from "@/components/ui/dialog";
 import { Input } from "@/components/ui/input";
 import { useServerAction } from "@/hooks/use-server-action";
+import { logger } from "@/lib/browser-log";
 import { getHabboCdnIconUrl, getLocalIconUrl } from "@/lib/furni/classname";
-import { logger } from "@/lib/logger";
 
 interface FurniResult {
 	id: number;