feat: consume server model reasoning capabilities

tests/unit/imported-model-profile.test.ts

@@ -3,6 +3,7 @@ import {
   estimateImportedModelVisionTokens,
   getImportedModelProfile,
 } from '../../shared/imported-model-profile';
+import { normalizeImportedModelCapabilities } from '../../shared/user-model-config';
 import {
   getKnownModelCapabilityKind,
   getModelCapabilityLabel,
@@ -10,6 +11,74 @@ import {
 } from '../../shared/model-capabilities';
 
 describe('getImportedModelProfile', () => {
+  it('returns native DeepSeek V4 Pro thinking levels without generic placeholders', () => {
+    expect(getImportedModelProfile('deepseek-v4-pro')).toMatchObject({
+      modalities: {
+        input: ['text'],
+        output: ['text'],
+      },
+      limit: {
+        context: 1_000_000,
+        output: 384_000,
+      },
+      pi: {
+        reasoning: true,
+        thinkingLevelMap: {
+          minimal: null,
+          low: 'low',
+          medium: null,
+          high: 'high',
+          max: 'max',
+        },
+        compat: {
+          thinkingFormat: 'deepseek',
+          supportsReasoningEffort: true,
+          requiresReasoningContentOnAssistantMessages: true,
+        },
+      },
+    });
+  });
+
+  it('normalizes Works model capabilities by normalized model id and supported effort', () => {
+    expect(normalizeImportedModelCapabilities({
+      'deepseek/deepseek-v4-pro': {
+        reasoning_efforts: ['max', 'low', 'low', 'medium', 'unsupported'],
+        reasoning_can_disable: true,
+      },
+      'qwen3.8-max': {
+        reasoning_efforts: ['high'],
+        reasoning_can_disable: false,
+      },
+      'unknown-model': {
+        reasoning_efforts: ['low'],
+        reasoning_can_disable: 'yes',
+      },
+    }, ['deepseek-v4-pro', 'qwen3.8-max'])).toEqual({
+      'deepseek-v4-pro': {
+        reasoningEfforts: ['low', 'max'],
+        reasoningCanDisable: true,
+      },
+      'qwen3.8-max': {
+        reasoningEfforts: ['high'],
+        reasoningCanDisable: false,
+      },
+    });
+  });
+
+  it('preserves an explicit empty effort list so the server can disable local reasoning metadata', () => {
+    expect(normalizeImportedModelCapabilities({
+      'deepseek-v4-pro': {
+        reasoning_efforts: [],
+        reasoning_can_disable: false,
+      },
+    }, ['deepseek-v4-pro'])).toEqual({
+      'deepseek-v4-pro': {
+        reasoningEfforts: [],
+        reasoningCanDisable: false,
+      },
+    });
+  });
+
   it.each([
     'qwen3.6-plus',
     'qwen3.6-plus-2026-04-02',