feat: update linter rules and improve code structure

- Added overrides in biome.json to disable specific linter rules for UI components.
- Reorganized imports and improved code readability in various UI components.
- Refactored components to use fieldset instead of div for better semantics.
- Enhanced accessibility by updating roles and aria attributes in components.
- Fixed minor issues with key props in map functions for better performance.
- Updated focus styles and improved CSS for better visual feedback.

src/components/ui/attachment.tsx

@@ -1,10 +1,9 @@
-import * as React from "react";
 import { mergeProps } from "@base-ui/react/merge-props";
 import { useRender } from "@base-ui/react/use-render";
 import { cva, type VariantProps } from "class-variance-authority";
-
-import { cn } from "@/lib/utils";
+import type * as React from "react";
 import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
 
 const attachmentVariants = cva(
   "group/attachment relative flex w-fit max-w-full min-w-0 shrink-0 flex-wrap rounded-xl border bg-card text-card-foreground transition-colors focus-within:ring-1 focus-within:ring-ring/50 has-[>a,>button]:hover:bg-muted/50 data-[state=error]:border-destructive/30 data-[state=idle]:border-dashed",