[FEATURE]: add prompt-time image preview for TUI attachments

I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

Add prompt-time image previews in the TUI when an image is attached.

Proposed behavior:

keep the existing [Image N] token
show textual metadata for attached images
render a small thumbnail when terminal capabilities allow it
fall back silently to text-only preview on unsupported terminals

Benefits:

gives immediate feedback before sending
makes pasted image attachments easier to verify
keeps unsupported terminals usable with a simple fallback

I already have a local prototype for this, but wanted to check if this direction is acceptable before opening a PR because it touches TUI/UI behavior.

This issue doesn't fully meet our contributing guidelines.

What needs to be fixed:

Feature requests must use the **[FEATURE]: ** prefix in the title (e.g. [FEATURE]: add prompt-time image preview for TUI attachments)
Feature requests must use the Feature Request issue template, which includes a verification checkbox confirming the feature hasn't been suggested before

Please edit this issue to address the above within 2 hours, or it will be automatically closed.

This issue might be a duplicate of existing issues. Please check:

[FEATURE(app)]: display image attachments from tool results in chat UI #21227: Display image attachments from tool results in chat UI (related — both deal with rendering image attachments in the UI, though that one focuses on tool result attachments in the app UI rather than prompt-time TUI preview)

If you believe this was flagged incorrectly, please let a maintainer know.

I have a working local prototype for this on my fork:

branch: feature/FEAT-22195-tui-image-preview

It shows attachment metadata in the TUI prompt and a small terminal-aware thumbnail fallback.

Before opening a PR, I wanted to confirm whether this direction is acceptable given the design review note in CONTRIBUTING.md for UI/core product changes.

Thanks for updating the issue! It now follows the contributing guidelines and feature request template. We appreciate you taking the time to revise it.

To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.

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[FEATURE]: add prompt-time image preview for TUI attachments #22195

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[FEATURE]: add prompt-time image preview for TUI attachments #22195

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github-actions commented on Apr 12, 2026

hernandezsanti commented on Apr 12, 2026

github-actions commented on Apr 12, 2026

github-actions commented on Jul 3, 2026

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