fix: 修复供应商管理弹窗交互问题并去掉 API Key 脱敏

- Dialog 设置 lazy={false} 修复首次打开编辑弹窗表单为空
- API Key 改为普通字段（前端去掉 password 类型，后端去掉掩码逻辑）
- 删除模型编辑弹窗中的统一模型 ID 字段
- 简化 ProviderService.Get 签名（去掉 maskKey 参数）
- 删除 domain 和 config 层的 MaskAPIKey() 方法
- 更新前后端测试（107 单元测试 + 16 E2E 全部通过）
- 同步 delta spec 到主 spec

frontend/src/__tests__/components/ModelForm.test.tsx

@@ -125,9 +125,6 @@ describe('ModelForm', () => {
     const dialog = getDialog();
     expect(within(dialog).getByText('编辑模型')).toBeInTheDocument();
 
-    // Check that unified ID field is displayed
-    expect(within(dialog).getByText('统一模型 ID')).toBeInTheDocument();
-
     // Check model name input
     const modelNameInput = within(dialog).getByPlaceholderText('例如: gpt-4o') as HTMLInputElement;
     expect(modelNameInput.value).toBe('gpt-4o');

frontend/src/__tests__/components/ProviderForm.test.tsx

@@ -63,13 +63,16 @@ describe('ProviderForm', () => {
 
     const baseUrlInput = within(dialog).getByPlaceholderText('例如: https://api.openai.com/v1') as HTMLInputElement;
     expect(baseUrlInput.value).toBe('https://api.openai.com/v1');
+
+    const apiKeyInput = within(dialog).getByPlaceholderText('sk-...') as HTMLInputElement;
+    expect(apiKeyInput.value).toBe('sk-old-key');
   });
 
-  it('shows API Key label variant in edit mode', () => {
+  it('shows API Key label in edit mode', () => {
     render(<ProviderForm {...defaultProps} provider={mockProvider} />);
 
     const dialog = getDialog();
-    expect(within(dialog).getByText('API Key（留空则不修改）')).toBeInTheDocument();
+    expect(within(dialog).getByText('API Key')).toBeInTheDocument();
   });
 
   it('shows validation error messages for required fields', async () => {

frontend/src/__tests__/components/ProviderTable.test.tsx

@@ -1,4 +1,4 @@
-import { render, screen, fireEvent } from '@testing-library/react';
+import { render, screen } from '@testing-library/react';
 import userEvent from '@testing-library/user-event';
 import { describe, it, expect, vi } from 'vitest';
 import { ProviderTable } from '@/pages/Providers/ProviderTable';
@@ -48,19 +48,18 @@ const defaultProps = {
 };
 
 describe('ProviderTable', () => {
-  it('renders provider list with name, baseUrl, masked apiKey, and status tags', () => {
+  it('renders provider list with name, baseUrl, apiKey, and status tags', () => {
     render(<ProviderTable {...defaultProps} />);
 
     expect(screen.getByText('供应商列表')).toBeInTheDocument();
 
-    // Check that provider names appear (they will appear in both name column and potentially protocol column)
     expect(screen.getAllByText('OpenAI').length).toBeGreaterThan(0);
     expect(screen.getByText('https://api.openai.com/v1')).toBeInTheDocument();
-    expect(screen.getByText('****5678')).toBeInTheDocument();
+    expect(screen.getByText('sk-abcdefgh12345678')).toBeInTheDocument();
 
     expect(screen.getAllByText('Anthropic').length).toBeGreaterThan(0);
     expect(screen.getByText('https://api.anthropic.com')).toBeInTheDocument();
-    expect(screen.getByText('****test')).toBeInTheDocument();
+    expect(screen.getByText('sk-ant-test')).toBeInTheDocument();
 
     const enabledTags = screen.getAllByText('启用');
     const disabledTags = screen.getAllByText('禁用');
@@ -77,7 +76,7 @@ describe('ProviderTable', () => {
     expect(container.querySelector('.t-card__body')).toBeInTheDocument();
   });
 
-  it('renders short api keys fully masked', () => {
+  it('renders short api keys directly', () => {
     const shortKeyProvider: Provider[] = [
       {
         ...mockProviders[0],
@@ -88,7 +87,7 @@ describe('ProviderTable', () => {
     ];
     render(<ProviderTable {...defaultProps} providers={shortKeyProvider} />);
 
-    expect(screen.getByText('****')).toBeInTheDocument();
+    expect(screen.getByText('ab')).toBeInTheDocument();
   });
 
   it('calls onAdd when clicking "添加供应商" button', async () => {

frontend/src/pages/Providers/ModelForm.tsx

@@ -65,6 +65,7 @@ export function ModelForm({
       visible={open}
       closeOnOverlayClick={false}
       closeOnEscKeydown={false}
+      lazy={false}
       onConfirm={() => { form?.submit(); return false; }}
       onClose={onCancel}
       confirmLoading={loading}
@@ -72,15 +73,6 @@ export function ModelForm({
       cancelBtn="取消"
     >
       <Form form={form} layout="vertical" onSubmit={handleSubmit}>
-        {isEdit && model?.unifiedId && (
-          <Form.FormItem label="统一模型 ID">
-            <Input value={model.unifiedId} disabled />
-            <div style={{ color: '#999', fontSize: 12, marginTop: 4 }}>
-              格式：provider_id/model_name
-            </div>
-          </Form.FormItem>
-        )}
-
         <Form.FormItem
           label="供应商"
           name="providerId"

frontend/src/pages/Providers/ProviderForm.tsx

@@ -36,7 +36,7 @@ export function ProviderForm({
         form.setFieldsValue({
           id: provider.id,
           name: provider.name,
-          apiKey: '',
+          apiKey: provider.apiKey,
           baseUrl: provider.baseUrl,
           protocol: provider.protocol,
           enabled: provider.enabled,
@@ -61,6 +61,7 @@ export function ProviderForm({
       visible={open}
       closeOnOverlayClick={false}
       closeOnEscKeydown={false}
+      lazy={false}
       onConfirm={() => { form?.submit(); return false; }}
       onClose={onCancel}
       confirmLoading={loading}
@@ -77,11 +78,11 @@ export function ProviderForm({
         </Form.FormItem>
 
         <Form.FormItem
-          label={isEdit ? 'API Key（留空则不修改）' : 'API Key'}
+          label="API Key"
           name="apiKey"
-          rules={isEdit ? [] : [{ required: true, message: '请输入 API Key' }]}
+          rules={[{ required: true, message: '请输入 API Key' }]}
         >
-          <Input type="password" placeholder="sk-..." autocomplete="current-password" />
+          <Input placeholder="sk-..." />
         </Form.FormItem>
 
         <Form.FormItem

frontend/src/pages/Providers/ProviderTable.tsx

@@ -1,4 +1,4 @@
-import { Button, Table, Tag, Popconfirm, Space, Card, Tooltip } from 'tdesign-react';
+import { Button, Table, Tag, Popconfirm, Space, Card } from 'tdesign-react';
 import type { PrimaryTableCol } from 'tdesign-react/es/table/type';
 import type { Provider, Model } from '@/types';
 import { ModelTable } from './ModelTable';
@@ -13,12 +13,6 @@ interface ProviderTableProps {
   onEditModel: (model: Model) => void;
 }
 
-function maskApiKey(key: string | null | undefined): string {
-  if (!key) return '****';
-  if (key.length <= 4) return '****';
-  return `****${key.slice(-4)}`;
-}
-
 export function ProviderTable({
   providers,
   loading,
@@ -53,13 +47,7 @@ export function ProviderTable({
     {
       title: 'API Key',
       colKey: 'apiKey',
-      width: 120,
       ellipsis: true,
-      cell: ({ row }) => (
-        <Tooltip content={maskApiKey(row.apiKey)}>
-          <span>{maskApiKey(row.apiKey)}</span>
-        </Tooltip>
-      ),
     },
     {
       title: '状态',

frontend/src/pages/Providers/index.tsx

@@ -55,7 +55,7 @@ export function ProvidersPage() {
             if (editingProvider) {
               const input: Partial<UpdateProviderInput> = {};
               if (values.name !== editingProvider.name) input.name = values.name;
-              if (values.apiKey) input.apiKey = values.apiKey;
+              if (values.apiKey !== editingProvider.apiKey) input.apiKey = values.apiKey;
               if (values.baseUrl !== editingProvider.baseUrl) input.baseUrl = values.baseUrl;
               if (values.enabled !== editingProvider.enabled) input.enabled = values.enabled;
               await updateProvider.mutateAsync({ id: editingProvider.id, input });