chore(models): move gpt-oss 120B from maintenance to deprecated (#535)

Recategorize Model.GptOss as 'deprecated' in MODEL_CONFIG so it moves
from the Maintenance Mode group to the Deprecated group in the model
selector. Update the unit tests and the dropdown-grouping e2e to match.

中文：将 gpt-oss 120B 模型从维护模式类别调整为弃用类别。在
MODEL_CONFIG 中将其 category 改为 'deprecated'，模型下拉选择器随之
将其归入"已弃用"分组；同步更新相关单元测试与 e2e 测试。

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

Author: functionstackx

packages/app/cypress/e2e/dropdown-switching.cy.ts

@@ -49,8 +49,8 @@ describe('Dropdown one-click switching', () => {
 
     cy.contains('Maintenance Mode').scrollIntoView().should('be.visible');
     cy.contains('[role="option"]', 'DeepSeek R1 0528 671B').scrollIntoView().should('be.visible');
-    cy.contains('[role="option"]', 'gpt-oss 120B').scrollIntoView().should('be.visible');
     cy.contains('Deprecated').scrollIntoView().should('be.visible');
+    cy.contains('[role="option"]', 'gpt-oss 120B').scrollIntoView().should('be.visible');
     cy.contains('[role="option"]', 'Llama 3.3 70B Instruct').scrollIntoView().should('be.visible');
   });
 

packages/app/src/lib/data-mappings.test.ts

@@ -156,12 +156,12 @@ describe('isModelDeprecated', () => {
     expect(isModelDeprecated(Model.MiniMax_M2_5)).toBe(true);
   });
 
-  it('returns false for non-deprecated model DeepSeek_R1', () => {
-    expect(isModelDeprecated(Model.DeepSeek_R1)).toBe(false);
+  it('returns true for deprecated model GptOss', () => {
+    expect(isModelDeprecated(Model.GptOss)).toBe(true);
   });
 
-  it('returns false for non-deprecated model GptOss', () => {
-    expect(isModelDeprecated(Model.GptOss)).toBe(false);
+  it('returns false for non-deprecated model DeepSeek_R1', () => {
+    expect(isModelDeprecated(Model.DeepSeek_R1)).toBe(false);
   });
 });
 
@@ -171,12 +171,12 @@ describe('isModelDeprecated', () => {
 describe('isModelMaintenance', () => {
   it('returns true for maintenance-mode models', () => {
     expect(isModelMaintenance(Model.DeepSeek_R1)).toBe(true);
-    expect(isModelMaintenance(Model.GptOss)).toBe(true);
   });
 
   it('keeps deprecated and default models out of maintenance mode', () => {
     expect(isModelMaintenance(Model.Llama3_3_70B)).toBe(false);
     expect(isModelMaintenance(Model.MiniMax_M2_5)).toBe(false);
+    expect(isModelMaintenance(Model.GptOss)).toBe(false);
   });
 });
 

packages/app/src/lib/data-mappings.ts

@@ -94,7 +94,7 @@ const MODEL_CONFIG: Record<Model, ModelConfig> = {
   },
   [Model.GLM_5]: { label: 'GLM5/5.1 744B', prefix: 'glm5', category: 'default' },
   [Model.Qwen3_5]: { label: 'Qwen3.5 397B', prefix: 'qwen3.5', category: 'default' },
-  [Model.GptOss]: { label: 'gpt-oss 120B', prefix: 'gptoss', category: 'maintenance' },
+  [Model.GptOss]: { label: 'gpt-oss 120B', prefix: 'gptoss', category: 'deprecated' },
   [Model.MiniMax_M2_5]: {
     // M2.5 and M2.7 share an architecture — same GLM5/5.1 pattern as Kimi.
     // Superseded by MiniMax M3, so it's deprecated (no longer actively benchmarked).