v0.2.0

What's Changed

• fix: add scroll to add-problem sheet by @lihaoze123 in #20
• chore: upgrade trellis framework and bootstrap frontend guidelines by @lihaoze123 in #21
• refactor: replace add/edit problem sheet with centered dialog card by @lihaoze123 in #22
• feat: add fullscreen/card mode toggle to problem dialogs by @lihaoze123 in #23
• feat: redesign solution dialog with fullscreen mode toggle by @lihaoze123 in #24
• feat: add SolutionEditor with split-pane fullscreen layout by @lihaoze123 in #25
• feat: streamline userscript import workflow by @lihaoze123 in #26

Full Changelog: v0.1.1...v0.2.0