Fix type errors, lint, and complexity from VPS architecture cleanup

- Fix brand-to-Convex-Id casts in use-project-workspace (as unknown as)
- Extract ProjectsLoading and ConnectProject components to drop SliceOnePage
  complexity below the lint threshold of 20
- Fix formatting in project-requests.ts
- Archive orphaned standalone chat files (route removed, referenced dead env)
- All 8 packages typecheck clean; 31 web tests pass; root check clean

repos/web/routes/standalone/chat/page.tsx

@@ -0,0 +1,16 @@
+import { StandaloneChatPage } from "@/components/standalone-chat/standalone-chat-page";
+
+import type { Route } from "./+types/page";
+
+export const meta = (_args: Route.MetaArgs) => [
+  {
+    content: "width=device-width, initial-scale=1, viewport-fit=cover",
+    name: "viewport",
+  },
+  { content: "Chat with Zopu", name: "description" },
+  { title: "Zopu Chat" },
+];
+
+export default function Page() {
+  return <StandaloneChatPage />;
+}