[Feature Request] Add session-scoped command whitelist override

Bug Description
Please add a way to whitelist a command for a single session only.

I generally prefer to keep Claude on a tight leash, but for certain tasks it's tedious to approve the same command (or slight variations) over and over again.

E.g. I don't generally want to give Claude free reign to make web requests, but when doing research I'd like to temporarily allow all requests to a given domain. Or when filing a new github issue, I'd temporarily allow using gh search issues and gh issue view.

Workaround
Allowlist the command, then edit settings.local.json after the session is done and remove it again.

Environment Info

• Platform: linux
• Terminal: vte-based
• Version: 2.1.39
• Feedback ID: 8f24f053-882a-4661-ab8b-d61a73881417