fix(providers): allow transfer limits on creation

frontend/src/features/providers/components/ProviderFormDialog.vue

@@ -202,11 +202,8 @@
           </div>
         </div>
 
-        <!-- 提供商内转移限制（仅编辑模式） -->
+        <!-- 提供商内转移限制 -->
-        <div
+        <div class="grid grid-cols-2 gap-2 sm:gap-4">
-          v-if="isEditMode"
-          class="grid grid-cols-2 gap-2 sm:gap-4"
-        >
           <div class="min-w-0 space-y-1.5">
             <Label
               for="max-transfer-count"

frontend/src/features/providers/components/__tests__/ProviderFormDialog.transfer-limits.spec.ts

@@ -204,21 +204,23 @@ describe('ProviderFormDialog transfer limits', () => {
     )
   })
 
-  it('hides the controls when creating while still sending zero defaults', async () => {
+  it('allows configuring transfer limits when creating', async () => {
     mountDialog(null)
     await settle()
 
-    expect(document.body.querySelector('#max-transfer-count')).toBeNull()
+    expect(document.body.querySelector<HTMLInputElement>('#max-transfer-count')?.value).toBe('')
-    expect(document.body.querySelector('#max-transfer-timeout-seconds')).toBeNull()
+    expect(document.body.querySelector<HTMLInputElement>('#max-transfer-timeout-seconds')?.value).toBe('')
 
     await setInput('#name', 'New Provider')
+    await setInput('#max-transfer-count', '8')
+    await setInput('#max-transfer-timeout-seconds', '30')
     clickButton('创建')
     await settle()
 
     expect(endpointMocks.createProvider).toHaveBeenCalledWith(
       expect.objectContaining({
-        max_transfer_count: 0,
+        max_transfer_count: 8,
-        max_transfer_timeout_seconds: 0,
+        max_transfer_timeout_seconds: 30,
       }),
     )
   })