P2-01/02 기본코드 종류 및 세부코드 관리 CRUD 구현

- CodeKindModel + CodeKind 컨트롤러 (목록/등록/수정/삭제)
- CodeDetailModel + CodeDetail 컨트롤러 (종류별 세부코드 CRUD)
- View: code_kind/(index,create,edit), code_detail/(index,create,edit)
- 라우트: /admin/code-kinds/*, /admin/code-details/*
- E2E 테스트 7개 전체 통과
- 스크린샷 2개 추가

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

app/Views/admin/code_detail/index.php

@@ -0,0 +1,44 @@
+<section class="border-b border-gray-300 p-2 shrink-0 bg-control-panel">
+  <div class="flex flex-wrap items-center justify-between gap-y-2">
+    <div class="flex items-center gap-2">
+      <a href="<?= base_url('admin/code-kinds') ?>" class="text-blue-600 hover:underline text-sm">&larr; 코드 종류</a>
+      <span class="text-gray-400">|</span>
+      <span class="text-sm font-bold text-gray-700">세부코드 — <?= esc($kind->ck_name) ?> (<?= esc($kind->ck_code) ?>)</span>
+    </div>
+    <a href="<?= base_url('admin/code-details/' . (int) $kind->ck_idx . '/create') ?>" class="bg-btn-search text-white px-4 py-1.5 rounded-sm flex items-center gap-1 text-sm shadow hover:opacity-90 transition border border-transparent">세부코드 등록</a>
+  </div>
+</section>
+<div class="border border-gray-300 overflow-auto mt-2">
+  <table class="w-full data-table">
+    <thead>
+      <tr>
+        <th class="w-16">번호</th>
+        <th class="w-24">코드</th>
+        <th>코드명</th>
+        <th class="w-20">정렬순서</th>
+        <th class="w-20">상태</th>
+        <th>등록일</th>
+        <th class="w-28">작업</th>
+      </tr>
+    </thead>
+    <tbody class="text-right">
+      <?php foreach ($list as $row): ?>
+      <tr>
+        <td class="text-center"><?= esc($row->cd_idx) ?></td>
+        <td class="text-center font-mono"><?= esc($row->cd_code) ?></td>
+        <td class="text-left pl-2"><?= esc($row->cd_name) ?></td>
+        <td class="text-center"><?= (int) $row->cd_sort ?></td>
+        <td class="text-center"><?= (int) $row->cd_state === 1 ? '사용' : '미사용' ?></td>
+        <td class="text-left pl-2"><?= esc($row->cd_regdate ?? '') ?></td>
+        <td class="text-center">
+          <a href="<?= base_url('admin/code-details/edit/' . (int) $row->cd_idx) ?>" class="text-blue-600 hover:underline text-sm">수정</a>
+          <form action="<?= base_url('admin/code-details/delete/' . (int) $row->cd_idx) ?>" method="POST" class="inline ml-1" onsubmit="return confirm('이 세부코드를 삭제하시겠습니까?');">
+            <?= csrf_field() ?>
+            <button type="submit" class="text-red-600 hover:underline text-sm">삭제</button>
+          </form>
+        </td>
+      </tr>
+      <?php endforeach; ?>
+    </tbody>
+  </table>
+</div>