hotfix: collation 충돌 수정 — user_page_permissions JOIN

utf8mb4_unicode_ci vs utf8mb4_general_ci 충돌으로 전체 페이지 접근 불가.
COLLATE utf8mb4_general_ci 명시로 해결.

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

system1-factory/api/routes/pageAccessRoutes.js

@@ -89,10 +89,10 @@ router.get('/users/:userId/page-access', requireAuth, async (req, res) => {
       FROM pages p
       LEFT JOIN user_page_permissions upp
         ON upp.user_id = ?
-        AND (upp.page_name = CONCAT('s1.', p.page_key) OR upp.page_name = p.page_key)
+        AND (upp.page_name COLLATE utf8mb4_general_ci = CONCAT('s1.', p.page_key) OR upp.page_name COLLATE utf8mb4_general_ci = p.page_key)
       LEFT JOIN department_page_permissions dpp
         ON dpp.department_id = ?
-        AND (dpp.page_name = CONCAT('s1.', p.page_key) OR dpp.page_name = p.page_key)
+        AND (dpp.page_name COLLATE utf8mb4_general_ci = CONCAT('s1.', p.page_key) OR dpp.page_name COLLATE utf8mb4_general_ci = p.page_key)
       ORDER BY p.display_order, p.page_name
     `, [userId, departmentId]);