Feature/update cursor model (#804)

* fix: remove the hide cursor on windows logic

* feat(cursor): update fallback models

src/hooks/useServerPlatform.ts

@@ -1,40 +0,0 @@
-import { useEffect, useState } from 'react';
-
-import { authenticatedFetch } from '../utils/api';
-
-/**
- * Node `process.platform` from the API host (e.g. win32, darwin, linux).
- * Null until loaded or if the request fails.
- */
-export function useServerPlatform(): {
-  serverPlatform: string | null;
-  isWindowsServer: boolean;
-} {
-  const [serverPlatform, setServerPlatform] = useState<string | null>(null);
-
-  useEffect(() => {
-    let cancelled = false;
-    (async () => {
-      try {
-        const response = await authenticatedFetch('/api/settings/server-env');
-        if (!response.ok) {
-          return;
-        }
-        const body = (await response.json()) as { platform?: string };
-        if (!cancelled && typeof body.platform === 'string') {
-          setServerPlatform(body.platform);
-        }
-      } catch {
-        // Keep null: treat as unknown host.
-      }
-    })();
-    return () => {
-      cancelled = true;
-    };
-  }, []);
-
-  return {
-    serverPlatform,
-    isWindowsServer: serverPlatform === 'win32',
-  };
-}