Click Git v0.1.0

First public MVP release of Click Git.\n\nHighlights:\n- Folder-scoped Git commands from the VS Code Explorer context menu.\n- Stage, unstage, commit, restore, status, and diff scoped to the selected folder.\n- Repository-scoped pull, push, and nested repo pull support.\n- Conservative safety model: explicit pathspecs, trusted workspace required, ff-only pull by default, upstream-only push.