feat: add header icons to all dashboard panels

Consistent icon treatment across Pages, Referrers, Locations,
Technology, Campaigns, Peak Hours, Goals, and Search panels.

components/dashboard/ContentStats.tsx

@@ -6,7 +6,7 @@ import { logger } from '@/lib/utils/logger'
 import { formatNumber } from '@ciphera-net/ui'
 import { useTabListKeyboard } from '@/lib/hooks/useTabListKeyboard'
 import { TopPage, getTopPages, getEntryPages, getExitPages } from '@/lib/api/stats'
-import { FrameCornersIcon } from '@phosphor-icons/react'
+import { Files, FrameCornersIcon } from '@phosphor-icons/react'
 import { Modal, ArrowUpRightIcon, LayoutDashboardIcon } from '@ciphera-net/ui'
 import { ListSkeleton } from '@/components/skeletons'
 import VirtualList from './VirtualList'
@@ -101,6 +101,7 @@ export default function ContentStats({ topPages, entryPages, exitPages, domain,
       <div className="bg-white dark:bg-neutral-900 border border-neutral-200 dark:border-neutral-800 rounded-2xl p-6 h-full flex flex-col">
         <div className="flex items-center justify-between mb-6">
           <div className="flex items-center gap-2">
+            <Files className="w-5 h-5 text-neutral-400 dark:text-neutral-500" weight="bold" />
             <h3 className="text-lg font-semibold text-neutral-900 dark:text-white">
               Pages
             </h3>