feat(rbac): residential-partner route lockdown + role-aware mobile nav

UAT (residential partners must have zero access to anything non-residential;
no marina dashboard). Server-side their permission map already 403s every
marina domain — this locks the client surface to match:

- AppShell: a residential-only user (residential_clients.view && !clients.view,
  non-super-admin) is redirected off ANY non-residential route to
  /residential/clients. Blocks the marina dashboard + every marina page in one
  place; personal surfaces (settings, inbox) stay reachable. (Fixes F4 — they
  no longer land on a marina dashboard of 403-ing empty widgets.)
- Mobile bottom tabs were hardcoded Dashboard/Clients/Berths regardless of role;
  now role-aware — residential-only users get Residential Clients/Interests
  instead of marina tabs they 403 on. (Fixes F5.)
- e2e: stale `#email` login selector → `#identifier` (smoke helper) — a real
  reason the smoke auth specs fail independent of the dev-server OOM.
- New crash-safe `matrix` Playwright project (role×viewport access matrix +
  responsive overflow sweep) — lean alternative to the full suite which
  OOM-crashes next dev locally.

Verified: matrix run shows residential_partner redirected to residential +
residential-scoped mobile tabs; 403s unchanged; tsc + eslint + 42 permission
tests pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/components/layout/mobile/mobile-bottom-tabs.tsx

@@ -2,9 +2,10 @@
 
 import Link from 'next/link';
 import { usePathname } from 'next/navigation';
-import { Anchor, LayoutDashboard, Menu, Search, Users } from 'lucide-react';
+import { Anchor, ClipboardList, LayoutDashboard, Menu, Search, Users } from 'lucide-react';
 
 import { cn } from '@/lib/utils';
+import { usePermissions } from '@/hooks/use-permissions';
 
 type TabSpec = {
   label: string;
@@ -12,16 +13,21 @@ type TabSpec = {
   segment: string; // route segment after /[portSlug]/
 };
 
-// Left-of-center: Dashboard, Clients. Right-of-center: Berths, More.
-// Search occupies the center slot. Documents demoted to the MoreSheet -
-// reps reach docs less often than berths during a walking inventory check,
-// and pinned-to-client documents are accessed via the client detail anyway.
-const TABS_LEFT: TabSpec[] = [
+// Marina users: Dashboard, Clients | Berths. Search center, More right.
+const MARINA_TABS_LEFT: TabSpec[] = [
   { label: 'Dashboard', icon: LayoutDashboard, segment: 'dashboard' },
   { label: 'Clients', icon: Users, segment: 'clients' },
 ];
+const MARINA_TABS_RIGHT: TabSpec[] = [{ label: 'Berths', icon: Anchor, segment: 'berths' }];
 
-const TABS_RIGHT: TabSpec[] = [{ label: 'Berths', icon: Anchor, segment: 'berths' }];
+// Residential-only users (e.g. residential partners) never have marina access,
+// so the bottom tabs mirror their residential-only sidebar instead of showing
+// Clients/Berths they 403 on (matches the AppShell route lockdown).
+const RESIDENTIAL_TABS_LEFT: TabSpec[] = [
+  { label: 'Clients', icon: Users, segment: 'residential/clients' },
+  { label: 'Interests', icon: ClipboardList, segment: 'residential/interests' },
+];
+const RESIDENTIAL_TABS_RIGHT: TabSpec[] = [];
 
 interface MobileBottomTabsProps {
   onMoreClick: () => void;
@@ -31,6 +37,11 @@ interface MobileBottomTabsProps {
 export function MobileBottomTabs({ onMoreClick, onSearchClick }: MobileBottomTabsProps) {
   const pathname = usePathname();
   const portSlug = pathname.split('/').filter(Boolean)[0] ?? 'port-nimara';
+  const { can, isSuperAdmin } = usePermissions();
+  const residentialOnly =
+    !isSuperAdmin && can('residential_clients', 'view') && !can('clients', 'view');
+  const tabsLeft = residentialOnly ? RESIDENTIAL_TABS_LEFT : MARINA_TABS_LEFT;
+  const tabsRight = residentialOnly ? RESIDENTIAL_TABS_RIGHT : MARINA_TABS_RIGHT;
 
   function isActive(segment: string): boolean {
     return pathname.startsWith(`/${portSlug}/${segment}`);
@@ -46,7 +57,7 @@ export function MobileBottomTabs({ onMoreClick, onSearchClick }: MobileBottomTab
         'flex items-end',
       )}
     >
-      {TABS_LEFT.map((tab) => (
+      {tabsLeft.map((tab) => (
         <NavTab key={tab.segment} tab={tab} portSlug={portSlug} active={isActive(tab.segment)} />
       ))}
 
@@ -60,7 +71,7 @@ export function MobileBottomTabs({ onMoreClick, onSearchClick }: MobileBottomTab
         <span className="relative font-medium">Search</span>
       </button>
 
-      {TABS_RIGHT.map((tab) => (
+      {tabsRight.map((tab) => (
         <NavTab key={tab.segment} tab={tab} portSlug={portSlug} active={isActive(tab.segment)} />
       ))}