Add image support in TUI

[kevinyang372]

Description

Adds image attachments to Warp's TUI Agent prompts.

• Recognizes pasted local PNG, JPEG, GIF, and WebP paths and consumes them as image context instead of inserting the paths into the prompt.
• Supports raw clipboard images through the same native WarpUI system clipboard implementation used by the GUI.
• Adds a dedicated attachment model and bar with eager loading state, multi-image navigation, removal controls, and TUI-scoped keybindings.
• Locks the composer to Agent mode while an attachment is present, then restores normal input detection after attachments are removed or submitted.
• Preserves ordinary text paste behavior when a paste is not a valid image attachment.

Linked Issue

N/A

Testing

• Manually tested locally with ./script/run-tui
  • Confirmed authenticated local startup reaches a usable prompt without panicking.
  • Confirmed bracketed image-path paste is consumed and produces a finalized attachment.
  • Confirmed multi-image navigation and empty-input Backspace removal.
  • Confirmed ordinary pasted text falls back to the prompt.
• Added model, rendering, input, and keybinding tests covering path parsing and processing, clipboard content, attachment state transitions, Agent-mode locking, paste fallback, and removal.
• cargo nextest run -p warp_tui --no-fail-fast — 342 passed.
• cargo nextest run -p warpui_core --features tui --no-fail-fast — 500 passed, 7 skipped.
• cargo clippy -p warp_tui -p warpui -p warpui_core --all-targets -- -D warnings
• ./script/format

Agent Mode

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

CHANGELOG-IMPROVEMENT: Added support for attaching images to prompts in Warp's TUI.

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@kevinyang372

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[kevinyang372]

• Add image support in TUI #13908 👈 (View in Graphite)
• master

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[oz-for-oss]

Overview

This PR adds TUI image attachment support, including a new attachment bar, paste/path ingestion, clipboard image handling, input-mode locking, keybindings, and render/model tests.

Concerns

• The PR changes user-visible TUI behavior, but the description does not include the required terminal transcript, render snapshot diff, or ./script/run-tui capture demonstrating the end-to-end flow. For this user-facing TUI change, please include one of those artifacts before merge.
• Pasted image paths are read fully into memory before any explicit byte cap is applied, which can stall or crash the TUI for very large files.

Security

• The pasted-path ingestion path accepts user-controlled file paths and can perform unbounded memory allocation before rejecting oversized images.

Verdict

Found: 0 critical, 2 important, 0 suggestions

Request changes

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