feat(clients): Phase 2 — unified Cursor/Generic tabs in Register client modal

Autonomous decisions:
- useTranslation for new tab/comparison copy only — reuses existing cursorBridge.* keys where they fit; leaves pre-existing hardcoded Generic strings untouched to keep diff smaller
- Segmented button-group tabs — matches modal rounded-xl/token styling without adding a new tab primitive
- HTML table in chevron expander — comparison content from planning doc rendered inline above submit row
- Shared machine state + one create-new sub-form — both tabs use the same SearchableSelect handlers and NEW_MACHINE_OPTION flow
- Cursor regenerate calls mintClient() again — same registerApiKeyClient path as CursorBridgeSection until Phase 3 rotate choice

Signed-off-by: crimsonsunset <jsangio1@gmail.com>

Author: crimsonsunset

apps/desktop/src/features/clients/ClientsPage.tsx

@@ -456,6 +456,7 @@ export default function ClientsPage() {
 
       {showRegister && (
         <RegisterApiKeyClientModal
+          gatewayUrl={gatewayStatus.url || 'http://localhost:45818'}
           onClose={() => setShowRegister(false)}
           onRegistered={(client) => {
             success('Client registered', `"${client.clientName}" can authenticate with its API key.`);