X-TOC v0.6.0

X-TOC 0.6.0 adds a small footer to the popup with a link to star the project on GitHub. It appears on the table-of-contents, empty, and non-X views and opens the repository in a new tab.

The test suite was refocused on core navigation, clip editing and search, export format, and release metadata (11 tests passing), and Chromium, Firefox, and Edge builds pass. Extension permissions, host access, local clip storage, and Markdown/JSON export behavior are unchanged.

This is the source release. Chrome Web Store review and publication are separate states and are not implied by this GitHub Release.