add TUI file-edit permission requests

[harryalbert]

Description

This PR implements permissions requests for file edits. The UI is pretty much the same as the PR below this one, but we show the actual file edits in the permissions card. These file edits are collapsed by default (so the card is small and readable instead of very large for large edits), and each edit is expandable.

Testing

• I have manually tested my changes locally with ./script/run

Screenshots / Videos

https://www.loom.com/share/82bcaeef4bb54a668a1173599c6c8f6b

Agent Mode

• Warp Agent Mode - This PR was created via Warp's AI Agent Mode

[harryalbert]

• add editable TUI shell-command permission requests #14021
• add TUI file-edit permission requests #14020 👈 (View in Graphite)
• Add permissions request for generic TUI tool calls #14019
• master

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Overview

This PR adds TUI permission handling for file-edit tool calls by wrapping blocked file-edit diffs in the shared permission prompt, routing accept/reject/replacement-guidance events back through the action model, and defaulting diff sections to collapsed with focused unit coverage.

Concerns

• No blocking correctness, security, or spec-alignment concerns were found in the annotated diff.
• No approved or repository spec context was provided for this PR, so there was no material spec drift to flag.

Verdict

Found: 0 critical, 0 important, 0 suggestions

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