style: change border-radius to 0 (#36)

* Initial plan

* style: change border-radius to 0

Co-authored-by: overtrue <1472352+overtrue@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: overtrue <1472352+overtrue@users.noreply.github.com>

Author: Copilot

assets/css/tailwind.css

@@ -28,7 +28,7 @@
   --chart-3: oklch(0.398 0.07 227.392);
   --chart-4: oklch(0.828 0.189 84.429);
   --chart-5: oklch(0.769 0.188 70.08);
-  --radius: 0.3rem;
+  --radius: 0;
   --sidebar: oklch(0.985 0 0);
   --sidebar-foreground: oklch(0.145 0 0);
   --sidebar-primary: oklch(0.205 0 0);