CT-01/02/03 공통 컴포넌트 구현 — 페이지네이션/엑셀/인쇄

CT-01: 페이지네이션
- 커스텀 Tailwind 페이저 뷰 (components/pager.php)
- 18개 admin 컨트롤러 findAll() → paginate(20) 전환
- Bag 컨트롤러 7개 리스트도 paginate 적용
- 19개 admin index 뷰에 페이저 링크 추가

CT-02: 엑셀 저장
- export_helper.php (UTF-8 BOM CSV)
- 발주/판매/지정판매소/재고 4개 엑셀 내보내기 라우트+메서드
- 해당 뷰에 "엑셀저장" 버튼 추가

CT-03: 인쇄
- print_header.php (지자체명/제목/결재란 컴포넌트)
- admin/bag 레이아웃에 @media print CSS 추가
- 23개 뷰에 인쇄 버튼 + print_header 추가

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

app/Views/components/pager.php

@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * Custom Tailwind CSS Pagination View for CodeIgniter 4
+ *
+ * @var \CodeIgniter\Pager\PagerRenderer $pager
+ */
+
+$pager->setSurroundCount(2);
+?>
+
+<?php if ($pager->hasPreviousPage() || $pager->hasNextPage()): ?>
+<nav aria-label="Page navigation" class="flex items-center justify-center gap-1 mt-3 mb-2 no-print">
+    <?php if ($pager->hasPreviousPage()): ?>
+        <a href="<?= $pager->getFirst() ?>" class="px-2 py-1 text-xs border border-gray-300 rounded hover:bg-gray-100 text-gray-600" title="처음">&laquo;</a>
+        <a href="<?= $pager->getPreviousPage() ?>" class="px-2 py-1 text-xs border border-gray-300 rounded hover:bg-gray-100 text-gray-600" title="이전">&lsaquo;</a>
+    <?php else: ?>
+        <span class="px-2 py-1 text-xs border border-gray-200 rounded text-gray-300">&laquo;</span>
+        <span class="px-2 py-1 text-xs border border-gray-200 rounded text-gray-300">&lsaquo;</span>
+    <?php endif; ?>
+
+    <?php foreach ($pager->links() as $link): ?>
+        <?php if ($link['active']): ?>
+            <span class="px-3 py-1 text-xs border border-blue-600 rounded bg-blue-600 text-white font-bold"><?= $link['title'] ?></span>
+        <?php else: ?>
+            <a href="<?= $link['uri'] ?>" class="px-3 py-1 text-xs border border-gray-300 rounded hover:bg-gray-100 text-gray-700"><?= $link['title'] ?></a>
+        <?php endif; ?>
+    <?php endforeach; ?>
+
+    <?php if ($pager->hasNextPage()): ?>
+        <a href="<?= $pager->getNextPage() ?>" class="px-2 py-1 text-xs border border-gray-300 rounded hover:bg-gray-100 text-gray-600" title="다음">&rsaquo;</a>
+        <a href="<?= $pager->getLast() ?>" class="px-2 py-1 text-xs border border-gray-300 rounded hover:bg-gray-100 text-gray-600" title="마지막">&raquo;</a>
+    <?php else: ?>
+        <span class="px-2 py-1 text-xs border border-gray-200 rounded text-gray-300">&rsaquo;</span>
+        <span class="px-2 py-1 text-xs border border-gray-200 rounded text-gray-300">&raquo;</span>
+    <?php endif; ?>
+</nav>
+<?php endif; ?>