fix(permissions): 개인 권한 테이블 불일치 수정

tkuser는 user_page_permissions에 저장하지만 네비/대시보드는
user_page_access에서 읽던 문제. user_page_permissions 기반으로 통일.

- pageAccessRoutes.js: user_page_access → user_page_permissions JOIN
- dashboardModel.js: 개인 권한 쿼리 page_name 기반으로 변경

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

system1-factory/api/routes/pageAccessRoutes.js

@@ -84,10 +84,12 @@ router.get('/users/:userId/page-access', requireAuth, async (req, res) => {
         p.page_name,
         p.page_path,
         p.category,
-        COALESCE(upa.can_access, dpp.can_access, p.is_default_accessible, 0) as can_access,
-        upa.granted_at
+        COALESCE(upp.can_access, dpp.can_access, p.is_default_accessible, 0) as can_access,
+        upp.granted_at
       FROM pages p
-      LEFT JOIN user_page_access upa ON p.id = upa.page_id AND upa.user_id = ?
+      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)
       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)