refactor(hub): migrate dashboard to shadcn components

Replace manual CSS classes with shadcn Card, CardHeader, CardTitle,
CardContent, and Badge components. Remove inline <style> block —
use Tailwind utility classes via shadcn theme tokens. Add Biome
formatting across all components.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/components/ui/popover.tsx

@@ -1,16 +1,16 @@
-"use client"
+"use client";
 
-import * as React from "react"
-import { Popover as PopoverPrimitive } from "@base-ui/react/popover"
+import * as React from "react";
+import { Popover as PopoverPrimitive } from "@base-ui/react/popover";
 
-import { cn } from "@/lib/utils"
+import { cn } from "@/lib/utils";
 
 function Popover({ ...props }: PopoverPrimitive.Root.Props) {
-  return <PopoverPrimitive.Root data-slot="popover" {...props} />
+  return <PopoverPrimitive.Root data-slot="popover" {...props} />;
 }
 
 function PopoverTrigger({ ...props }: PopoverPrimitive.Trigger.Props) {
-  return <PopoverPrimitive.Trigger data-slot="popover-trigger" {...props} />
+  return <PopoverPrimitive.Trigger data-slot="popover-trigger" {...props} />;
 }
 
 function PopoverContent({
@@ -38,13 +38,13 @@ function PopoverContent({
           data-slot="popover-content"
           className={cn(
             "z-50 flex w-72 origin-(--transform-origin) flex-col gap-2.5 rounded-lg bg-popover p-2.5 text-sm text-popover-foreground shadow-md ring-1 ring-foreground/10 outline-hidden duration-100 data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95",
-            className
+            className,
           )}
           {...props}
         />
       </PopoverPrimitive.Positioner>
     </PopoverPrimitive.Portal>
-  )
+  );
 }
 
 function PopoverHeader({ className, ...props }: React.ComponentProps<"div">) {
@@ -54,7 +54,7 @@ function PopoverHeader({ className, ...props }: React.ComponentProps<"div">) {
       className={cn("flex flex-col gap-0.5 text-sm", className)}
       {...props}
     />
-  )
+  );
 }
 
 function PopoverTitle({ className, ...props }: PopoverPrimitive.Title.Props) {
@@ -64,7 +64,7 @@ function PopoverTitle({ className, ...props }: PopoverPrimitive.Title.Props) {
       className={cn("font-medium", className)}
       {...props}
     />
-  )
+  );
 }
 
 function PopoverDescription({
@@ -77,7 +77,7 @@ function PopoverDescription({
       className={cn("text-muted-foreground", className)}
       {...props}
     />
-  )
+  );
 }
 
 export {
@@ -87,4 +87,4 @@ export {
   PopoverHeader,
   PopoverTitle,
   PopoverTrigger,
-}
+};