fix(admin): reload provider list after save to get correct data format

UpdateProvider API returns raw DB entity (encrypted config, string types),
but frontend needs ProviderInstanceResponse (decrypted, array types).
Reload full list after save to ensure correct data and sort order.

backend/cmd/server/VERSION

@@ -1 +1 @@
-0.1.108.145
+0.1.108.146

frontend/src/views/admin/SettingsView.vue

@@ -2923,15 +2923,13 @@ async function handleSaveProvider(payload: Partial<ProviderInstance>) {
   providerSaving.value = true
   try {
     if (editingProvider.value) {
-      const updated = await adminAPI.payment.updateProvider(editingProvider.value.id, payload)
-      // Update in place to preserve list order
-      const idx = providers.value.findIndex(p => p.id === editingProvider.value!.id)
-      if (idx >= 0 && updated.data) providers.value[idx] = updated.data
+      await adminAPI.payment.updateProvider(editingProvider.value.id, payload)
     } else {
       await adminAPI.payment.createProvider(payload)
-      loadProviders()
     }
     showProviderDialog.value = false
+    // Reload full list (API returns decrypted/formatted data with correct sort order)
+    await loadProviders()
     // Auto-save settings so provider changes take effect immediately
     await saveSettings()
   } catch (err: unknown) {