v2.1.0-alpha.446

Changes

style: fix biome lint and format errors (53989e2a)
fix: correct GitHub repo URL in update-check endpoint (ad0d6e29)
feat: customizable dashboard widgets with reorder and visibility (88866c1b)
feat: update check endpoint and UpdateChecker component (b74e5d46)
feat: version mismatch detection and disconnected banner (c8b0ad1f)
feat: add ConfirmDialog for destructive actions (f948c8b6)

⚠️ This is an alpha release - use at your own risk!