Two detector bugs that produced false positives on sites like uselinkshot.com:
1. The bg-black regex matched Tailwind opacity modifiers (bg-black/3,
hover:bg-black/5) because / is a word boundary. Added negative lookahead.
2. resolveBackground ignored url() background-images, walking past them to
the body's white bg. White text on a dark hero image was flagged as
1.0:1 white-on-white. Now bails on url() images like it does for gradients.
Also: extension build auto-generates dist/extension.zip, version bumps for
CLI (2.1.7) and extension (1.0.1).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>