v1.0.60

What's Changed

• docs: add contribution guide and PR template by @AmethystLiang in #163
• Condensed diff header with relocated view toggle by @AmethystLiang in #164
• Add checks status indicator to activity bar by @AmethystLiang in #166
• Harden external navigation and cross-platform path handling by @AmethystLiang in #167
• Add markdown preview support to editor by @AmethystLiang in #168
• feat: add release notes links to update UI by @AmethystLiang in #169
• feat: show git status across file navigation by @AmethystLiang in #170

Full Changelog: v1.0.59...v1.0.60