diff --git a/VERSION b/VERSION
index 0bfccb0..ef52a64 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.4.5
+0.4.6
diff --git a/source_clean/VERSION b/source_clean/VERSION
index 0bfccb0..ef52a64 100644
--- a/source_clean/VERSION
+++ b/source_clean/VERSION
@@ -1 +1 @@
-0.4.5
+0.4.6
diff --git a/source_clean/src/routes/admin.routes.ts b/source_clean/src/routes/admin.routes.ts
index 895eed8..339c2ed 100644
--- a/source_clean/src/routes/admin.routes.ts
+++ b/source_clean/src/routes/admin.routes.ts
@@ -154,7 +154,7 @@ router.get('/admin/cloud-configs', (_req: Request, res: Response) => {
 });
 
 /** POST /api/admin/cloud-configs — create or smart-replace a cloud config */
-router.post('/admin/cloud-configs', (req: Request, res: Response) => {
+router.post('/admin/cloud-configs', async (req: Request, res: Response) => {
   try {
     const data = req.body;
     if (!data.cloud_type) {
@@ -164,6 +164,24 @@ router.post('/admin/cloud-configs', (req: Request, res: Response) => {
     // Normalize is_active: frontend sends boolean, SQLite needs 0/1
     if (typeof data.is_active === 'boolean') data.is_active = data.is_active ? 1 : 0;
     const saved = saveCloudConfig(data);
+
+    // Auto-validate if cookie was provided (best-effort, non-blocking)
+    if (data.cookie && saved.id) {
+      try {
+        const result = await testCloudConnectionWithCookie(data.cloud_type, data.cookie);
+        if (result.success) {
+          const updateData: any = { id: saved.id, cloud_type: data.cloud_type };
+          if (result.nickname) updateData.nickname = result.nickname;
+          if (result.storage_used) updateData.storage_used = result.storage_used;
+          if (result.storage_total) updateData.storage_total = result.storage_total;
+          saveCloudConfig(updateData);
+          Object.assign(saved, { nickname: result.nickname, storage_used: result.storage_used, storage_total: result.storage_total });
+        }
+      } catch (_) {
+        // Auto-validation is best-effort, don't fail the save
+      }
+    }
+
     res.json(saved);
   } catch (err: any) {
     res.status(500).json({ error: err.message || 'Failed to save cloud config' });