diff --git a/tkpurchase/web/accounts.html b/tkpurchase/web/accounts.html
index 9e630b3..da673d1 100644
--- a/tkpurchase/web/accounts.html
+++ b/tkpurchase/web/accounts.html
@@ -133,7 +133,7 @@
         </div>
     </div>
 
-    <script src="/static/js/tkpurchase-core.js?v=2026031601"></script>
+    <script src="/static/js/tkpurchase-core.js?v=2026031602"></script>
     <script src="/static/js/tkpurchase-accounts.js?v=2026031601"></script>
     <script>initAccountsPage();</script>
 </body>
diff --git a/tkpurchase/web/daylabor.html b/tkpurchase/web/daylabor.html
index b36ace8..f895d1f 100644
--- a/tkpurchase/web/daylabor.html
+++ b/tkpurchase/web/daylabor.html
@@ -148,7 +148,7 @@
         </div>
     </div>
 
-    <script src="/static/js/tkpurchase-core.js?v=2026031601"></script>
+    <script src="/static/js/tkpurchase-core.js?v=2026031602"></script>
     <script src="/static/js/tkpurchase-daylabor.js?v=2026031601"></script>
     <script>initDayLaborPage();</script>
 </body>
diff --git a/tkpurchase/web/index.html b/tkpurchase/web/index.html
index 4a985bd..10768e4 100644
--- a/tkpurchase/web/index.html
+++ b/tkpurchase/web/index.html
@@ -88,7 +88,7 @@
         </div>
     </div>
 
-    <script src="/static/js/tkpurchase-core.js?v=2026031601"></script>
+    <script src="/static/js/tkpurchase-core.js?v=2026031602"></script>
     <script src="/static/js/tkpurchase-dashboard.js?v=2026031601"></script>
     <script>initDashboard();</script>
 </body>
diff --git a/tkpurchase/web/partner-history.html b/tkpurchase/web/partner-history.html
index 680b7c3..92ee14c 100644
--- a/tkpurchase/web/partner-history.html
+++ b/tkpurchase/web/partner-history.html
@@ -61,7 +61,7 @@
         <div id="historyPagination" class="mt-4 flex justify-center gap-2"></div>
     </div>
 
-    <script src="/static/js/tkpurchase-core.js?v=2026031601"></script>
+    <script src="/static/js/tkpurchase-core.js?v=2026031602"></script>
     <script src="/static/js/tkpurchase-partner-history.js?v=2026031601"></script>
     <script>initPartnerHistory();</script>
 </body>
diff --git a/tkpurchase/web/partner-portal.html b/tkpurchase/web/partner-portal.html
index 209c7c2..15f14df 100644
--- a/tkpurchase/web/partner-portal.html
+++ b/tkpurchase/web/partner-portal.html
@@ -81,7 +81,7 @@
         </div>
     </div>
 
-    <script src="/static/js/tkpurchase-core.js?v=2026031601"></script>
+    <script src="/static/js/tkpurchase-core.js?v=2026031602"></script>
     <script src="/static/js/tkpurchase-partner-portal.js?v=2026031601"></script>
     <script>initPartnerPortal();</script>
 </body>
diff --git a/tkpurchase/web/partner.html b/tkpurchase/web/partner.html
index cb2fb3b..6bbe396 100644
--- a/tkpurchase/web/partner.html
+++ b/tkpurchase/web/partner.html
@@ -294,7 +294,7 @@
         </div>
     </div>
 
-    <script src="/static/js/tkpurchase-core.js?v=2026031601"></script>
+    <script src="/static/js/tkpurchase-core.js?v=2026031602"></script>
     <script src="/static/js/tkpurchase-partner.js?v=2026031601"></script>
     <script>initPartnerPage();</script>
 </body>
diff --git a/tkpurchase/web/schedule.html b/tkpurchase/web/schedule.html
index 5a354ee..139fe4f 100644
--- a/tkpurchase/web/schedule.html
+++ b/tkpurchase/web/schedule.html
@@ -275,7 +275,7 @@
         </div>
     </div>
 
-    <script src="/static/js/tkpurchase-core.js?v=2026031601"></script>
+    <script src="/static/js/tkpurchase-core.js?v=2026031602"></script>
     <script src="/static/js/tkpurchase-schedule.js?v=2026031601"></script>
     <script>initSchedulePage();</script>
 </body>
diff --git a/tkpurchase/web/static/js/tkpurchase-core.js b/tkpurchase/web/static/js/tkpurchase-core.js
index 3b70409..be61d14 100644
--- a/tkpurchase/web/static/js/tkpurchase-core.js
+++ b/tkpurchase/web/static/js/tkpurchase-core.js
@@ -109,6 +109,11 @@ function toggleMobileMenu() {
     document.body.style.overflow = open ? 'hidden' : '';
 }
 
+/* ===== tkuser URL ===== */
+const _tkuserBase = location.hostname.includes('technicalkorea.net')
+    ? 'https://tkuser.technicalkorea.net'
+    : `http://${location.hostname}:30380`;
+
 /* ===== Navbar ===== */
 function renderNavbar() {
     const currentPage = location.pathname.replace(/\//g, '') || 'index.html';
@@ -119,13 +124,15 @@ function renderNavbar() {
         { href: '/workreport.html', icon: 'fa-clipboard-list', label: '업무현황', match: ['workreport.html'] },
         { href: '/workreport-summary.html', icon: 'fa-chart-bar', label: '업무 종합', match: ['workreport-summary.html'] },
         { href: '/accounts.html', icon: 'fa-user-shield', label: '계정 관리', match: ['accounts.html'] },
+        { href: `${_tkuserBase}/?tab=partners`, icon: 'fa-truck', label: '협력업체 관리', external: true },
     ];
     const nav = document.getElementById('sideNav');
     if (!nav) return;
     nav.innerHTML = links.map(l => {
-        const active = l.match.some(m => currentPage === m || currentPage.endsWith(m));
+        const active = l.match && l.match.some(m => currentPage === m || currentPage.endsWith(m));
+        const extIcon = l.external ? ' <i class="fas fa-external-link-alt text-xs opacity-50"></i>' : '';
         return `<a href="${l.href}" class="nav-link flex items-center gap-3 px-4 py-2.5 rounded-lg text-sm transition-colors ${active ? 'active' : 'text-gray-600 hover:bg-gray-100'}">
-            <i class="fas ${l.icon} w-5 text-center"></i><span>${l.label}</span></a>`;
+            <i class="fas ${l.icon} w-5 text-center"></i><span>${l.label}${extIcon}</span></a>`;
     }).join('');
     // 모바일: nav-link 클릭 시 메뉴 닫기
     nav.querySelectorAll('.nav-link').forEach(a => {
diff --git a/tkpurchase/web/workreport-summary.html b/tkpurchase/web/workreport-summary.html
index 0ade11a..eb95489 100644
--- a/tkpurchase/web/workreport-summary.html
+++ b/tkpurchase/web/workreport-summary.html
@@ -100,7 +100,7 @@
         </div>
     </div>
 
-    <script src="/static/js/tkpurchase-core.js?v=2026031601"></script>
+    <script src="/static/js/tkpurchase-core.js?v=2026031602"></script>
     <script src="/static/js/tkpurchase-workreport-summary.js?v=2026031601"></script>
     <script>initSummaryPage();</script>
 </body>
diff --git a/tkpurchase/web/workreport.html b/tkpurchase/web/workreport.html
index 3c0b54d..08f1056 100644
--- a/tkpurchase/web/workreport.html
+++ b/tkpurchase/web/workreport.html
@@ -114,7 +114,7 @@
         </div>
     </div>
 
-    <script src="/static/js/tkpurchase-core.js?v=2026031601"></script>
+    <script src="/static/js/tkpurchase-core.js?v=2026031602"></script>
     <script src="/static/js/tkpurchase-workreport.js?v=2026031601"></script>
     <script>initWorkReportPage();</script>
 </body>
diff --git a/user-management/web/index.html b/user-management/web/index.html
index b0c9d60..5c73df9 100644
--- a/user-management/web/index.html
+++ b/user-management/web/index.html
@@ -1997,7 +1997,7 @@
     </div>
 
     <!-- JS: Core (config, token, api, toast, helpers, init) -->
-    <script src="/static/js/tkuser-core.js?v=2026031401"></script>
+    <script src="/static/js/tkuser-core.js?v=2026031601"></script>
     <!-- JS: Tabs -->
     <script src="/static/js/tkuser-tabs.js?v=2026031401"></script>
     <!-- JS: Individual modules -->
diff --git a/user-management/web/static/js/tkuser-core.js b/user-management/web/static/js/tkuser-core.js
index 9253d80..3b2f553 100644
--- a/user-management/web/static/js/tkuser-core.js
+++ b/user-management/web/static/js/tkuser-core.js
@@ -186,7 +186,23 @@ async function init() {
     // 알림 벨 로드
     _loadNotificationBell();
 
-    setTimeout(() => document.querySelectorAll('.fade-in').forEach(el => el.classList.add('visible')), 50);
+    setTimeout(() => {
+        document.querySelectorAll('.fade-in').forEach(el => el.classList.add('visible'));
+        // URL ?tab= 파라미터로 탭 자동 전환 (화이트리스트 + URL 정리)
+        const ALLOWED_TABS = ['users','projects','workplaces','workers','departments',
+            'permissions','issueTypes','tasks','vacations','partners','vendors',
+            'consumables','notificationRecipients'];
+        const urlTab = new URLSearchParams(location.search).get('tab');
+        if (urlTab && ALLOWED_TABS.includes(urlTab)) {
+            const tabBtn = document.querySelector(`.tab-btn[onclick*="switchTab('${urlTab}')"]`);
+            if (tabBtn && tabBtn.style.display !== 'none') {
+                tabBtn.click();
+                const url = new URL(location);
+                url.searchParams.delete('tab');
+                history.replaceState(null, '', url);
+            }
+        }
+    }, 50);
 }
 
 /* ===== 알림 벨 ===== */