Transcript mode: add search and jump-to-question navigation

What feature would you like to see?

I’d like search in transcript mode.

When I’m in transcript mode (e.g., Ctrl+T), pressing / should open a search box. After typing a query and pressing Enter, the view should jump to the last occurrence (or nearest previous match) and highlight it. I should be able to move between matches with arrows (↓/↑) or j/k. Esc exits search.

It would also be very helpful to have shortcuts to jump between questions. Ideally this would rely on the structured roles in the transcript rather than searching literal words like /user or /codex, which may also appear in the content.

Why
Large transcripts often contain hundreds of lines of logs/code, making earlier answers hard to find. Search + role-based jumps would make codex resume workflows much faster.

Core behavior

• / → open search box; Enter → jump to match; highlights visible matches.
• Navigate matches: j/k or ↓/↑.
• Next/prev question (user message): J/K or Alt+↓ / Alt+↑.
• Exit: Esc.

Options (nice to have)

• Toggles: case sensitivity, whole word, regex.
• Scopes: search in user prompts only, assistant replies only, or code blocks only.
• Persist last search within the session.

Are you interested in implementing this feature?

No.

Additional information

_No response_