Move plugins from Settings tab to own hub with sidebar entry

- Remove /admin/plugins from Settings hub prefixes and tabs
- Add dedicated Plugins hub with Puzzle icon
- Add sidebar nav group entry for Plugins in ADMIN_NAV_GROUPS
- Add i18n keys: hub plugins, pluginsSubtitle, pluginsGroup, hubPlugins

src/lib/admin-nav.ts

@@ -268,11 +268,10 @@ export const ADMIN_HUBS: AdminHubDefinition[] = [
 			"/admin/maintenance",
 			"/admin/favicon",
 			"/admin/emulator",
-			"/admin/email-templates",
-			"/admin/housekeeping",
-			"/admin/webhooks",
-			"/admin/plugins",
-		],
+		"/admin/email-templates",
+		"/admin/housekeeping",
+		"/admin/webhooks",
+	],
 		tabs: [
 			{ href: "/admin/settings", labelKey: "cms" },
 			{ href: "/admin/theme", labelKey: "theme" },
@@ -282,7 +281,6 @@ export const ADMIN_HUBS: AdminHubDefinition[] = [
 			{ href: "/admin/email-templates", labelKey: "email" },
 			{ href: "/admin/housekeeping", labelKey: "housekeeping" },
 			{ href: "/admin/webhooks", labelKey: "webhooks" },
-			{ href: "/admin/plugins", labelKey: "plugins" },
 		],
 	},
 	{
@@ -336,6 +334,16 @@ export const ADMIN_HUBS: AdminHubDefinition[] = [
 			{ href: "/admin/alerts", labelKey: "alerts" },
 		],
 	},
+	{
+		id: "plugins",
+		titleKey: "plugins",
+		subtitleKey: "pluginsSubtitle",
+		icon: Puzzle,
+		prefixes: ["/admin/plugins"],
+		tabs: [
+			{ href: "/admin/plugins", labelKey: "plugins" },
+		],
+	},
 ];
 
 export function allHubs(): AdminHubDefinition[] {
@@ -505,4 +513,16 @@ export const ADMIN_NAV_GROUPS: AdminNavGroup[] = [
 			},
 		],
 	},
+	{
+		labelKey: "pluginsGroup",
+		icon: Puzzle,
+		items: [
+			{
+				href: "/admin/plugins",
+				labelKey: "hubPlugins",
+				icon: Puzzle,
+				matchPrefixes: ["/admin/plugins"],
+			},
+		],
+	},
 ];