feat(admin): reorganize housekeeping and strengthen shared workflows

src/lib/staff-smoke-contract.test.ts

@@ -81,10 +81,10 @@ describe("staff smoke contract", () => {
 		expect(readFileSync("src/lib/admin-nav.ts", "utf8")).not.toContain(
 			"/admin/menu",
 		);
-		expect(
-			readFileSync("src/components/admin/admin-sidebar-nav.tsx", "utf8"),
-		).toContain("applyAdminNavConfig");
-		expect(readFileSync("src/app/admin/layout.tsx", "utf8")).toContain(
+		expect(readFileSync("src/lib/admin-navigation.ts", "utf8")).toContain(
+			"applyAdminNavConfig",
+		);
+		expect(readFileSync("src/lib/admin/navigation.ts", "utf8")).toContain(
 			"ADMIN_NAV_CONFIG_KEY",
 		);
 	});