feat: questionnaire management (Fasa 6)

- QuestionnaireSetController: full CRUD + publish/archive
- QuestionController: store, update, destroy, reorder
- ProgramQuestionnaireController: attach, confirm, detach
- Public/QuestionnaireController: show form, submit responses, double-submit guard
- Views: admin questionnaire CRUD, program questionnaire assign, public form + thankyou/already

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

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

@@ -0,0 +1,100 @@
+@extends('layouts.public')
+
+@section('title', 'Borang Penilaian — ' . $program->title)
+
+@section('hero')
+<h4 class="mb-1">{{ $program->title }}</h4>
+<div class="opacity-75 small">
+    <i class="bi bi-clipboard2-check me-1"></i>Borang Penilaian Program
+</div>
+@endsection
+
+@section('content')
+
+<div class="checkin-card card p-4 mb-3">
+    <div class="text-center mb-4">
+        <div class="rounded-circle bg-primary 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-clipboard2-check-fill text-primary" style="font-size:2rem;"></i>
+        </div>
+        <h5 class="fw-bold mb-1">{{ $pq->questionnaireSet->title }}</h5>
+        <p class="text-muted small mb-0">
+            Sila jawab semua soalan sebelum memuat turun sijil anda, {{ $participant->name }}.
+        </p>
+    </div>
+
+    <form method="POST" action="{{ route('public.questionnaire.submit', [$qrCode->token, $participant->uuid]) }}">
+        @csrf
+
+        @foreach($questions as $q)
+        <div class="mb-4">
+            <label class="form-label fw-medium">
+                {{ $loop->iteration }}. {{ $q->question_text }}
+                @if($q->is_required)
+                <span class="text-danger">*</span>
+                @endif
+            </label>
+
+            @error('q_' . $q->id)
+            <div class="text-danger small mb-1"><i class="bi bi-exclamation-circle me-1"></i>{{ $message }}</div>
+            @enderror
+
+            @if($q->question_type === 'rating')
+            <div class="d-flex gap-2 flex-wrap">
+                @for($i = 1; $i <= 5; $i++)
+                <div class="form-check form-check-inline">
+                    <input class="form-check-input" type="radio"
+                           name="q_{{ $q->id }}" id="q{{ $q->id }}_{{ $i }}"
+                           value="{{ $i }}" {{ old('q_'.$q->id) == $i ? 'checked' : '' }}>
+                    <label class="form-check-label" for="q{{ $q->id }}_{{ $i }}">
+                        {{ $i }}
+                        @if($i === 1) <small class="text-muted">(Sangat Tidak Setuju)</small>
+                        @elseif($i === 5) <small class="text-muted">(Sangat Setuju)</small>
+                        @endif
+                    </label>
+                </div>
+                @endfor
+            </div>
+
+            @elseif($q->question_type === 'single_choice')
+            @foreach($q->options_json ?? [] as $opt)
+            <div class="form-check">
+                <input class="form-check-input" type="radio"
+                       name="q_{{ $q->id }}" id="q{{ $q->id }}_{{ $loop->index }}"
+                       value="{{ $opt }}" {{ old('q_'.$q->id) === $opt ? 'checked' : '' }}>
+                <label class="form-check-label" for="q{{ $q->id }}_{{ $loop->index }}">{{ $opt }}</label>
+            </div>
+            @endforeach
+
+            @elseif($q->question_type === 'multiple_choice')
+            @foreach($q->options_json ?? [] as $opt)
+            <div class="form-check">
+                <input class="form-check-input" type="checkbox"
+                       name="q_{{ $q->id }}[]" id="q{{ $q->id }}_{{ $loop->index }}"
+                       value="{{ $opt }}"
+                       {{ in_array($opt, (array)(old('q_'.$q->id) ?? [])) ? 'checked' : '' }}>
+                <label class="form-check-label" for="q{{ $q->id }}_{{ $loop->index }}">{{ $opt }}</label>
+            </div>
+            @endforeach
+
+            @elseif($q->question_type === 'short_text')
+            <input type="text" name="q_{{ $q->id }}"
+                   class="form-control @error('q_'.$q->id) is-invalid @enderror"
+                   value="{{ old('q_'.$q->id) }}"
+                   placeholder="Jawapan anda...">
+
+            @elseif($q->question_type === 'long_text')
+            <textarea name="q_{{ $q->id }}" rows="4"
+                      class="form-control @error('q_'.$q->id) is-invalid @enderror"
+                      placeholder="Jawapan anda...">{{ old('q_'.$q->id) }}</textarea>
+            @endif
+        </div>
+        @endforeach
+
+        <button type="submit" class="btn btn-primary w-100 btn-checkin">
+            <i class="bi bi-send me-2"></i>Hantar Maklum Balas
+        </button>
+    </form>
+</div>
+
+@endsection