fix(tksafety): 작업별 항목 표시 안 되는 버그 — check_type 'task' vs 'work_type' 불일치 수정

DB에 저장된 check_type='task'를 프론트에서 'work_type'으로 필터링하여 매칭 0건.
HTML option value와 JS 필터를 모두 'task'로 통일.

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

tksafety/web/checklist.html

@@ -110,7 +110,7 @@
                         <select id="itemType" class="input-field w-full px-3 py-2 rounded-lg text-sm" required>
                             <option value="basic">기본</option>
                             <option value="weather">날씨별</option>
-                            <option value="work_type">작업별</option>
+                            <option value="task">작업별</option>
                         </select>
                     </div>
                     <!-- 날씨 조건 (weather type only) -->
@@ -162,7 +162,7 @@
     </div>
 
     <script src="/static/js/tksafety-core.js?v=3"></script>
-    <script src="/static/js/tksafety-checklist.js?v=2"></script>
+    <script src="/static/js/tksafety-checklist.js?v=3"></script>
     <script>initChecklistPage();</script>
 </body>
 </html>