Phase 6

Owner Administration is complete. Summary of this final stretch of work:

Seed data extended with an inactive staff member, a pending invitation, a redeemed-reward fixture, a service with no eligible staff, and a future-appointment fixture for conflict testing — all idempotent, verified against the dev DB.

Testing brought to 179 unit / 86 integration / 27 E2E tests, all passing together on a freshly seeded, disposable Postgres:

Unit tests for every new pure validator (business hours, categories/services, booking rules, loyalty config, staff creation).
Integration tests covering opening-hours conflicts, last-owner protection, staff deactivation/eligibility conflicts, loyalty redemption's atomic race-guard, and owner-vs-barber/business-isolation authorization — all against a real Postgres.
12 new Playwright owner journeys, which surfaced and fixed two genuine issues along the way: a cookie-clearing race condition in the sign-out-mid-test flow (a real, reproducible timing bug, not just a test artifact), and confirmation that seed fixtures upserted by deterministic ID go stale once "today" has moved on — now handled defensively.
Desktop responsiveness: converted the single-column Business Details, Booking Rules, and Loyalty Configuration forms to a genuine two-column layout at the lg: breakpoint (verified via measured element positions, not just screenshots), confirmed mobile stacking is unaffected.

Final verification: clean tsc, eslint, and next build, plus the full three-suite run against one fresh database as the authoritative pass.

src/app/(owner)/owner/settings/hours/page.tsx

@@ -0,0 +1,34 @@
+import type { Metadata } from "next";
+import { redirect } from "next/navigation";
+import { auth } from "@/auth";
+import { TopNav } from "@/components/navigation/top-nav";
+import { prisma } from "@/lib/db/prisma";
+import { hasPermission } from "@/lib/auth/permissions";
+import { Permission } from "@/generated/prisma/enums";
+import { getOpeningHours } from "@/services/business/business.service";
+import { OpeningHoursForm } from "@/features/owner/components/opening-hours-form";
+
+export const metadata: Metadata = { title: "Opening Hours" };
+export const dynamic = "force-dynamic";
+
+export default async function OwnerOpeningHoursPage() {
+  const session = await auth();
+  if (!session?.user) redirect("/sign-in");
+
+  const canManage = await hasPermission(session.user.id, Permission.MANAGE_BUSINESS_PROFILE);
+  if (!canManage) redirect("/staff");
+
+  const staff = await prisma.staffProfile.findUnique({ where: { userId: session.user.id } });
+  if (!staff) redirect("/staff");
+
+  const hours = await getOpeningHours(prisma, staff.businessId);
+
+  return (
+    <div className="pb-12">
+      <TopNav title="Opening Hours" onBack sticky className="bg-stone" />
+      <main className="mx-auto max-w-2xl px-6 py-6">
+        <OpeningHoursForm initialRows={hours} />
+      </main>
+    </div>
+  );
+}