Streaming copilot, replay timeline, and match results

What changed

• Recruiting Copilot now streams its replies, showing each step as it runs and typing out the answer. A run keeps going when you move to another page, and the recruiter and classroom agents can search the web for background.
• Full session replay plays a multi-question assessment on one timeline that follows the candidate between questions. Candidates can keep saving for their whole time limit, and a session that runs out of time is now always submitted.
• The match results page was rebuilt, with the result up top, you and your opponent side by side, and your next steps in a panel beside the problem and replay.