Vision model support for Qwen-OAuth (#525)

* refactor: openaiContentGenerator

* refactor: optimize stream handling

* refactor: re-organize refactored files

* fix: unit test cases

* feat: `/model` command for switching to vision model

* fix: lint error

* feat: add image tokenizer to fit vlm context window

* fix: lint and type errors

* feat: add `visionModelPreview` to control default visibility of vision models

* fix: remove deprecated files

* fix: align supported image formats with bailian doc

packages/cli/src/ui/hooks/slashCommandProcessor.test.ts

@@ -106,6 +106,7 @@ describe('useSlashCommandProcessor', () => {
   const mockLoadHistory = vi.fn();
   const mockOpenThemeDialog = vi.fn();
   const mockOpenAuthDialog = vi.fn();
+  const mockOpenModelSelectionDialog = vi.fn();
   const mockSetQuittingMessages = vi.fn();
 
   const mockConfig = makeFakeConfig({});
@@ -122,6 +123,7 @@ describe('useSlashCommandProcessor', () => {
     mockBuiltinLoadCommands.mockResolvedValue([]);
     mockFileLoadCommands.mockResolvedValue([]);
     mockMcpLoadCommands.mockResolvedValue([]);
+    mockOpenModelSelectionDialog.mockClear();
   });
 
   const setupProcessorHook = (
@@ -150,11 +152,13 @@ describe('useSlashCommandProcessor', () => {
         mockSetQuittingMessages,
         vi.fn(), // openPrivacyNotice
         vi.fn(), // openSettingsDialog
+        mockOpenModelSelectionDialog,
         vi.fn(), // openSubagentCreateDialog
         vi.fn(), // openAgentsManagerDialog
         vi.fn(), // toggleVimEnabled
         setIsProcessing,
         vi.fn(), // setGeminiMdFileCount
+        vi.fn(), // _showQuitConfirmation
       ),
     );
 
@@ -395,6 +399,21 @@ describe('useSlashCommandProcessor', () => {
       expect(mockOpenThemeDialog).toHaveBeenCalled();
     });
 
+    it('should handle "dialog: model" action', async () => {
+      const command = createTestCommand({
+        name: 'modelcmd',
+        action: vi.fn().mockResolvedValue({ type: 'dialog', dialog: 'model' }),
+      });
+      const result = setupProcessorHook([command]);
+      await waitFor(() => expect(result.current.slashCommands).toHaveLength(1));
+
+      await act(async () => {
+        await result.current.handleSlashCommand('/modelcmd');
+      });
+
+      expect(mockOpenModelSelectionDialog).toHaveBeenCalled();
+    });
+
     it('should handle "load_history" action', async () => {
       const command = createTestCommand({
         name: 'load',
@@ -904,11 +923,13 @@ describe('useSlashCommandProcessor', () => {
           mockSetQuittingMessages,
           vi.fn(), // openPrivacyNotice
           vi.fn(), // openSettingsDialog
+          vi.fn(), // openModelSelectionDialog
           vi.fn(), // openSubagentCreateDialog
           vi.fn(), // openAgentsManagerDialog
           vi.fn(), // toggleVimEnabled
           vi.fn(), // setIsProcessing
           vi.fn(), // setGeminiMdFileCount
+          vi.fn(), // _showQuitConfirmation
         ),
       );