Visual design
Image decoding, crop, color controls, preview, and ZIP creation happen locally in your browser.
No image-upload APIYour image does not
need a server round trip.
Theme design stays in the browser. Installation stays a separate, reviewable local decision.
Open local studioReviewable export
The archive contains an image, JSON, CSS variables, a manifest, and a plain-text guide.
No executable installerSeparate behavior
The upstream open-source scripts apply the theme through loopback-only CDP after you review them.
Explicit local trustNon-negotiable
What a theme must never hide.
No provider changes
A visual theme must not rewrite API keys, model providers, or Base URLs.
No official package mutation
The upstream workflow does not replace the official app bundle, app.asar, or code signature.
No silent remote access
The debugging interface stays on 127.0.0.1 and should be closed through restore when unused.
No borrowed rights
Artwork licenses, character rights, likenesses, and trademarks remain the publisher's responsibility.