Pins the sanitizer allowlist, the resource-policy boundaries and Windows file-name rules with exact tests. Themes with undecodable text or repeated property names are refused; renamed and edited themes are written compactly and kept under their own size limit.
Closes#48
Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>
Signed-off-by: James Maes <james@kof22.com>
