Fix Docker frontend hydration under CSP

Render the app shell dynamically so Next can attach per-request CSP nonces to its production scripts, preventing Docker from serving a static shell that cannot hydrate. Also gives the first-contact warmup test enough time in CI.

frontend/src/__tests__/mesh/messagesViewFirstContact.test.tsx

@@ -305,7 +305,7 @@ describe('MessagesView first-contact trust UX', () => {
     await screen.findByText(/Mail delivered to Pinned Peer/i, {}, { timeout: 5000 });
     expect(mocks.prepareWormholeInteractiveLane).toHaveBeenCalled();
     expect(mocks.sendDmMessage).toHaveBeenCalled();
-  });
+  }, 10000);
 
   it('does not flatten witness policy not met into a generic witnessed root label', async () => {
     contactsState = {