Refactor useAuth hook, settings components, and docs for formatting and readability improvements

- Consolidated multi-line arguments into single lines where appropriate in `useAuth`.
- Improved spacing and readability in data processing across components (`ProfileSettingsForm`, `PasswordChangeForm`, `SessionCard`).
- Applied consistent table and markdown formatting in design system docs (e.g., `README.md`, `08-ai-guidelines.md`, `00-quick-start.md`).
- Updated code snippets to ensure adherence to Prettier rules and streamlined JSX structures.

frontend/src/components/ui/alert.tsx

@@ -1,59 +1,49 @@
-import * as React from "react"
-import { cva, type VariantProps } from "class-variance-authority"
+import * as React from 'react';
+import { cva, type VariantProps } from 'class-variance-authority';
 
-import { cn } from "@/lib/utils"
+import { cn } from '@/lib/utils';
 
 const alertVariants = cva(
-  "relative w-full rounded-lg border px-4 py-3 text-sm [&>svg+div]:translate-y-[-3px] [&>svg]:absolute [&>svg]:left-4 [&>svg]:top-4 [&>svg]:text-foreground [&>svg~*]:pl-7",
+  'relative w-full rounded-lg border px-4 py-3 text-sm [&>svg+div]:translate-y-[-3px] [&>svg]:absolute [&>svg]:left-4 [&>svg]:top-4 [&>svg]:text-foreground [&>svg~*]:pl-7',
   {
     variants: {
       variant: {
-        default: "bg-background text-foreground",
+        default: 'bg-background text-foreground',
         destructive:
-          "border-destructive/50 text-destructive dark:border-destructive [&>svg]:text-destructive",
+          'border-destructive/50 text-destructive dark:border-destructive [&>svg]:text-destructive',
       },
     },
     defaultVariants: {
-      variant: "default",
+      variant: 'default',
     },
   }
-)
+);
 
 const Alert = React.forwardRef<
   HTMLDivElement,
   React.HTMLAttributes<HTMLDivElement> & VariantProps<typeof alertVariants>
 >(({ className, variant, ...props }, ref) => (
-  <div
-    ref={ref}
-    role="alert"
-    className={cn(alertVariants({ variant }), className)}
-    {...props}
-  />
-))
-Alert.displayName = "Alert"
+  <div ref={ref} role="alert" className={cn(alertVariants({ variant }), className)} {...props} />
+));
+Alert.displayName = 'Alert';
 
-const AlertTitle = React.forwardRef<
-  HTMLParagraphElement,
-  React.HTMLAttributes<HTMLHeadingElement>
->(({ className, ...props }, ref) => (
-  <h5
-    ref={ref}
-    className={cn("mb-1 font-medium leading-none tracking-tight", className)}
-    {...props}
-  />
-))
-AlertTitle.displayName = "AlertTitle"
+const AlertTitle = React.forwardRef<HTMLParagraphElement, React.HTMLAttributes<HTMLHeadingElement>>(
+  ({ className, ...props }, ref) => (
+    <h5
+      ref={ref}
+      className={cn('mb-1 font-medium leading-none tracking-tight', className)}
+      {...props}
+    />
+  )
+);
+AlertTitle.displayName = 'AlertTitle';
 
 const AlertDescription = React.forwardRef<
   HTMLParagraphElement,
   React.HTMLAttributes<HTMLParagraphElement>
 >(({ className, ...props }, ref) => (
-  <div
-    ref={ref}
-    className={cn("text-sm [&_p]:leading-relaxed", className)}
-    {...props}
-  />
-))
-AlertDescription.displayName = "AlertDescription"
+  <div ref={ref} className={cn('text-sm [&_p]:leading-relaxed', className)} {...props} />
+));
+AlertDescription.displayName = 'AlertDescription';
 
-export { Alert, AlertTitle, AlertDescription }
+export { Alert, AlertTitle, AlertDescription };