feat: public check-in flow and attendance (Fasa 5)

- AttendanceService: staffCheckin and walkInRegister methods
- CheckinController: QR-based check-in (staff & walk-in external)
- AttendanceCheckController: semak kehadiran & sijil status
- Views: checkin show/success/already/unavailable, semak show/result

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

resources/views/public/semak/result.blade.php

@@ -0,0 +1,90 @@
+@extends('layouts.public')
+
+@section('title', 'Hasil Semakan — ' . $program->title)
+
+@section('hero')
+<h4 class="mb-1">{{ $program->title }}</h4>
+<div class="opacity-75 small">
+    <i class="bi bi-calendar3 me-1"></i>{{ $program->start_date->format('d M Y') }}
+</div>
+@endsection
+
+@section('content')
+
+@if(! $found)
+{{-- Not found --}}
+<div class="checkin-card card p-4 text-center">
+    <div class="rounded-circle bg-danger bg-opacity-10 d-inline-flex align-items-center justify-content-center mx-auto mb-3"
+         style="width:70px; height:70px;">
+        <i class="bi bi-person-x-fill text-danger" style="font-size:2rem;"></i>
+    </div>
+    <h5 class="fw-bold text-danger mb-2">Tiada Rekod Kehadiran</h5>
+    <p class="text-muted small mb-3">
+        No. Kad Pengenalan yang dimasukkan tidak dijumpai dalam senarai kehadiran program ini.
+    </p>
+    <a href="{{ route('public.semak.show', $qrCode->token) }}" class="btn btn-outline-primary btn-sm">
+        <i class="bi bi-arrow-left me-1"></i> Cuba Semula
+    </a>
+</div>
+
+@else
+{{-- Found --}}
+<div class="checkin-card card p-4 text-center mb-3">
+    <div class="rounded-circle bg-success bg-opacity-10 d-inline-flex align-items-center justify-content-center mx-auto mb-3"
+         style="width:70px; height:70px;">
+        <i class="bi bi-patch-check-fill text-success" style="font-size:2rem;"></i>
+    </div>
+    <h5 class="fw-bold text-success mb-1">Kehadiran Disahkan</h5>
+    <p class="text-muted small mb-3">Rekod kehadiran anda dijumpai.</p>
+
+    <div class="bg-light rounded p-3 text-start">
+        <div class="row g-2">
+            <div class="col-5 text-muted small">Nama</div>
+            <div class="col-7 fw-medium small">{{ $participant->name }}</div>
+            <div class="col-5 text-muted small">Sesi</div>
+            <div class="col-7 small"><span class="badge bg-primary">{{ Str::ucfirst($attendance->attendance_session) }}</span></div>
+            <div class="col-5 text-muted small">Masa Check-In</div>
+            <div class="col-7 small">{{ $attendance->checked_in_at->format('d/m/Y H:i') }}</div>
+        </div>
+    </div>
+</div>
+
+{{-- Certificate status --}}
+@if($program->isDownloadOpen())
+    @if($certificate && $certificate->isGenerated())
+    <div class="checkin-card card p-4 text-center">
+        <i class="bi bi-award-fill text-warning fs-1 mb-2"></i>
+        <h6 class="fw-semibold mb-2">Sijil Sedia Dimuat Turun</h6>
+        <p class="text-muted small mb-3">Klik butang di bawah untuk dapatkan sijil anda.</p>
+        <a href="{{ route('public.certificate.show', $certificate->token) }}"
+           class="btn btn-warning btn-checkin w-100">
+            <i class="bi bi-download me-2"></i>Muat Turun Sijil
+        </a>
+    </div>
+    @elseif($certificate && $certificate->status === 'pending')
+    <div class="alert alert-info text-center">
+        <i class="bi bi-hourglass-split me-2"></i>
+        Sijil sedang disediakan. Sila semak emel anda atau cuba lagi sebentar.
+    </div>
+    @else
+    <div class="alert alert-info text-center small">
+        <i class="bi bi-envelope-fill me-2"></i>
+        Link muat turun sijil akan dihantar ke emel anda.
+        @if($participant->email)
+        <strong>{{ $participant->email }}</strong>
+        @endif
+    </div>
+    @endif
+@else
+<div class="alert alert-secondary text-center small">
+    <i class="bi bi-clock me-2"></i>
+    Sijil belum boleh dimuat turun.
+    @if($program->ecert_download_start_at)
+    Mula pada <strong>{{ $program->ecert_download_start_at->format('d M Y, H:i') }}</strong>.
+    @endif
+</div>
+@endif
+
+@endif
+
+@endsection

resources/views/public/semak/show.blade.php

@@ -0,0 +1,45 @@
+@extends('layouts.public')
+
+@section('title', 'Semak Kehadiran — ' . $program->title)
+
+@section('hero')
+<h4 class="mb-1">{{ $program->title }}</h4>
+<div class="opacity-75 small">
+    <i class="bi bi-calendar3 me-1"></i>{{ $program->start_date->format('d M Y') }}
+    &nbsp;&middot;&nbsp;
+    <i class="bi bi-geo-alt me-1"></i>{{ $program->location }}
+</div>
+@endsection
+
+@section('content')
+
+@if($program->isDownloadOpen())
+<div class="alert alert-success mb-4 small">
+    <i class="bi bi-award-fill me-2"></i>
+    <strong>Sijil boleh dimuat turun!</strong>
+    Masukkan No. Kad Pengenalan untuk semak status sijil anda.
+</div>
+@endif
+
+<div class="checkin-card card p-4">
+    <h6 class="fw-semibold mb-3">
+        <i class="bi bi-search me-2 text-primary"></i>Semak Kehadiran & Sijil
+    </h6>
+    <form method="POST" action="{{ route('public.semak.check', $qrCode->token) }}">
+        @csrf
+        <div class="mb-3">
+            <label class="form-label fw-medium">No. Kad Pengenalan <span class="text-danger">*</span></label>
+            <input type="text" name="no_kp"
+                   class="form-control form-control-lg @error('no_kp') is-invalid @enderror"
+                   placeholder="900101011234"
+                   inputmode="numeric" maxlength="12" autocomplete="off">
+            <div class="form-text">12 digit tanpa sempang</div>
+            @error('no_kp')<div class="invalid-feedback">{{ $message }}</div>@enderror
+        </div>
+        <button type="submit" class="btn btn-primary w-100 btn-checkin">
+            <i class="bi bi-search me-2"></i>Semak Sekarang
+        </button>
+    </form>
+</div>
+
+@endsection