feat(portal): auth persistence, shift visibility, profile page, and UI polish

- Fix session persistence: add loading state to App.vue, hydrate portal store
  in router guards so page refresh preserves auth + event context
- Fix shift visibility for festivals: query child event time slots so shifts
  on sub-events appear in the portal
- Add profile page with editable personal info and password change
- Add backend endpoints: PUT /portal/profile and PUT /portal/password
- Fix registration form: make first_name/last_name editable for logged-in users
- Restyle login page: remove Vuexy illustration, center form with Crewli branding
- Improve dashboard StatusCard with action cards, icons, and upcoming shift count
- Enhance shift cards with status border colors and availability progress bars

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/app/Http/Controllers/Api/V1/Portal/PortalShiftController.php

@@ -31,10 +31,12 @@ final class PortalShiftController extends Controller
             return $this->forbidden('Je moet eerst goedgekeurd zijn om diensten te claimen.');
         }
 
+        $eventIds = $this->resolveEventIds($event);
+
         $shifts = Shift::query()
             ->where('status', 'open')
             ->where('slots_open_for_claiming', '>', 0)
-            ->whereHas('timeSlot', fn ($q) => $q->where('event_id', $event->id)->where('person_type', 'VOLUNTEER'))
+            ->whereHas('timeSlot', fn ($q) => $q->whereIn('event_id', $eventIds)->where('person_type', 'VOLUNTEER'))
             ->with(['festivalSection', 'timeSlot', 'location'])
             ->withCount([
                 'shiftAssignments as active_assignments_count' => fn ($q) => $q->whereNotIn('status', [
@@ -113,8 +115,10 @@ final class PortalShiftController extends Controller
     {
         $person = $this->resolvePerson($event);
 
+        $eventIds = $this->resolveEventIds($event);
+
         $assignments = ShiftAssignment::where('person_id', $person->id)
-            ->whereHas('shift.timeSlot', fn ($q) => $q->where('event_id', $event->id))
+            ->whereHas('shift.timeSlot', fn ($q) => $q->whereIn('event_id', $eventIds))
             ->with(['shift.festivalSection', 'shift.timeSlot', 'shift.location'])
             ->get();
 
@@ -239,6 +243,25 @@ final class PortalShiftController extends Controller
             ->firstOrFail();
     }
 
+    /**
+     * Get all event IDs relevant for shift queries.
+     * For festivals: includes parent + all child event IDs.
+     * For flat/sub-events: just the event's own ID.
+     *
+     * @return list<string>
+     */
+    private function resolveEventIds(Event $event): array
+    {
+        $ids = [$event->id];
+
+        if ($event->isFestival()) {
+            $childIds = $event->children()->pluck('id')->all();
+            $ids = array_merge($ids, $childIds);
+        }
+
+        return $ids;
+    }
+
     private function mapClaimErrorMessage(string $message): string
     {
         if (str_contains($message, 'niet open')) {