feat: consume server model reasoning capabilities

tests/unit/coding-projects-schema-v2.test.ts

@@ -13,6 +13,7 @@ import { atomicWriteJson } from '../../electron/coding-projects/atomic-json';
 import {
   createCodingProjectAgent,
   createCodingProjectConfigV2,
+  normalizeProductModelRef,
   readCodingProjectConfigV2,
 } from '../../electron/coding-projects/project-config';
 import {
@@ -54,6 +55,18 @@ afterEach(async () => {
 });
 
 describe('coding project schema v2', () => {
+  it('accepts the native max thinking level in a project model reference', () => {
+    expect(normalizeProductModelRef({
+      accountId: 'account-local',
+      modelId: 'deepseek-v4-pro',
+      thinkingLevel: 'max',
+    })).toEqual({
+      accountId: 'account-local',
+      modelId: 'deepseek-v4-pro',
+      thinkingLevel: 'max',
+    });
+  });
+
   it('creates project, Agent, and empty Conversation metadata without a runtime child', async () => {
     const projectPath = await makeProjectPath();
     const storage = createMemoryCodingProjectStorage();