[Feature Request] Add image generation/editing capability for UI asset extraction from mockups

**Bug Description**
## Summary

Claude Code's coding ability is outstanding — but it currently has no image
generation/editing capability, which blocks a real game-development workflow
that competing tools (OpenAI Codex) already handle well.

## Use case

I'm developing a Cocos2d-x casino game. A common task: take a flattened UI
mockup (e.g. a "NEWS" popup screenshot with neon frames, tabs, buttons,
stylized logo text) and split it into **clean, alpha-transparent PNG assets**
ready for production use in CocosStudio — backplate 9-slice frames, tab
states, list buttons, close button, scrollbar, icons, logo art.

## What happened

- Claude correctly **identified and decomposed** every UI component from the
mockup (excellent analysis: component tree, 9-slice suggestions, asset list).
- But when asked to actually **produce the cutout PNGs**, it could only offer
procedural drawing (PIL gradients/shapes). The results were usable for
simple geometric pieces but clearly below production quality for
illustrative art (stylized logo text, 3D-ish cartoon icons).
- Codex's image editing feature produced clean, production-ready transparent
cutouts from the same mockup (regenerated assets with proper alpha edges).

## Request

Give Claude Code image generation/editing capability (or an official
integration) so it can:

1. Re-generate individual UI elements from a flattened mockup as clean
transparent PNGs (background removal + asset regeneration).
2. Match the style/palette of the source mockup.
3. Output at specified sizes suitable for game engines (9-slice aware would
be a bonus).

Claude already does the *analysis* half of this workflow better than anything
else — it just can't finish the job. Closing this gap would make Claude Code
a complete tool for game UI development.

## Environment

- Claude Code on Windows 11 (desktop app), Opus 4.8 / Fable 5
- Project: Cocos2d-x 3.x + CocosStudio assets

**Environment Info**
- Platform: win32
- Terminal: windows-terminal
- Version: 2.1.219
- Feedback ID: 69e9480f-af3d-4750-8e58-6729ebf1190f

**Errors**
```json
[]
```

No repository files, tests, or entry points are named in the report. Start by reviewing Claude Code's existing image or media integrations and the requested mockup-to-transparent-PNG workflow; done means supporting asset generation or editing with style matching, specified sizes, transparency, and optional 9-slice awareness.

Written by the indexing model from the issue text.