feat: 사용자 의견(피드백) 전체보기 — 한 페이지 스크롤로 전체 확인/처리

- /admin/feedback/all: 모든 의견을 상세 클릭 없이 전체 내용+첨부이미지로
  세로 나열, 상단 빠른이동 앵커(#fb-{id})로 특정 건 바로 스크롤
- 각 항목에 상태·메모 인라인 저장 폼 포함(저장 후 같은 위치로 복귀)
- 목록형(index) 화면에 "전체보기(스크롤)" 링크 추가

app/Views/admin/feedback/index.php

@@ -21,14 +21,17 @@ $badge = static function (string $s): string {
 ?>
 <section class="border-b border-gray-300 p-2 shrink-0 bg-control-panel flex flex-wrap items-center justify-between gap-2">
   <span class="text-sm font-bold text-gray-700">사용자 의견</span>
-  <form method="get" class="flex items-center gap-2 text-sm">
-    <select name="status" class="border border-gray-300 rounded px-3 py-1 text-sm w-40 min-w-[10rem]" onchange="this.form.submit()">
-      <option value="">전체 상태</option>
-      <?php foreach (FeedbackModel::STATUSES as $s): ?>
-      <option value="<?= esc($s, 'attr') ?>" <?= $status === $s ? 'selected' : '' ?>><?= esc(FeedbackModel::statusLabel($s)) ?></option>
-      <?php endforeach; ?>
-    </select>
-  </form>
+  <div class="flex items-center gap-2">
+    <form method="get" class="flex items-center gap-2 text-sm">
+      <select name="status" class="border border-gray-300 rounded px-3 py-1 text-sm w-40 min-w-[10rem]" onchange="this.form.submit()">
+        <option value="">전체 상태</option>
+        <?php foreach (FeedbackModel::STATUSES as $s): ?>
+        <option value="<?= esc($s, 'attr') ?>" <?= $status === $s ? 'selected' : '' ?>><?= esc(FeedbackModel::statusLabel($s)) ?></option>
+        <?php endforeach; ?>
+      </select>
+    </form>
+    <a href="<?= site_url('admin/feedback/all') ?>" class="inline-flex items-center rounded-lg bg-[#243a5e] px-3 py-1.5 text-white text-xs font-semibold shadow-sm hover:opacity-90 whitespace-nowrap">전체보기(스크롤)</a>
+  </div>
 </section>
 
 <div class="border border-gray-300 rounded-lg p-4 overflow-auto mt-2">