feat(targets): update navigation routes and enhance add button UI

- Change target detail navigation route from `/website/` to `/overview/`
- Update TargetNameCell click handler to use new overview route
- Update TargetRowActions onView handler to use new overview route
- Add IconPlus icon import from @tabler/icons-react
- Add icon to create target button for improved visual clarity
- Improves navigation consistency and button affordance in targets table

frontend/components/organization/targets/targets-columns.tsx

@@ -132,7 +132,7 @@ function TargetNameCell({
   return (
     <div className="group flex items-start gap-1 flex-1 min-w-0">
       <button
-        onClick={() => navigate(`/target/${targetId}/website/`)}
+        onClick={() => navigate(`/target/${targetId}/overview/`)}
         className="text-sm font-medium hover:text-primary hover:underline underline-offset-2 transition-colors cursor-pointer text-left break-all leading-relaxed whitespace-normal"
       >
         {name}
@@ -251,7 +251,7 @@ export const createTargetColumns = ({
     cell: ({ row }) => (
       <TargetRowActions
         target={row.original}
-        onView={() => navigate(`/target/${row.original.id}/website/`)}
+        onView={() => navigate(`/target/${row.original.id}/overview/`)}
         onDelete={() => handleDelete(row.original)}
         t={t}
       />

frontend/components/organization/targets/targets-data-table.tsx

@@ -1,7 +1,7 @@
 "use client"
 
 import * as React from "react"
-import { IconSearch, IconLoader2 } from "@tabler/icons-react"
+import { IconSearch, IconLoader2, IconPlus } from "@tabler/icons-react"
 import { useTranslations } from "next-intl"
 import { Button } from "@/components/ui/button"
 import { Input } from "@/components/ui/input"
@@ -74,6 +74,7 @@ export function TargetsDataTable({
   // 自定义添加按钮（支持 onAddHover）
   const addButton = onAddNew ? (
     <Button onClick={onAddNew} onMouseEnter={onAddHover} size="sm">
+      <IconPlus className="h-4 w-4" />
       {addButtonText || tTarget("createTarget")}
     </Button>
   ) : undefined