test: drop MiniMax-M2.7-highspeed fixtures (M2.5/M2.7/M3 only)

MiniMax has sunset M2.7-highspeed across all subscription tiers — even
legacy users no longer have it. The API still accepts the id (backward
compat) but it's no longer part of the official text-model lineup:
M2.5 / M2.7 / M3.

Update test fixtures to use M2.5 (the only M-tier model in the lineup
that wasn't already the hardcoded fallback) so the fixtures reflect
real-world model ids users will actually pass. CLI behavior unchanged.

Builds on #172.

Author: raylanlin

test/commands/config/set.test.ts

@@ -91,7 +91,7 @@ describe('config set command', () => {
     await expect(
       setCommand.execute(config, {
         key: 'default_text_model',
-        value: 'MiniMax-M2.7-highspeed',
+        value: 'MiniMax-M2.5',
         quiet: false,
         verbose: false,
         noColor: true,
@@ -123,7 +123,7 @@ describe('config set command', () => {
     await expect(
       setCommand.execute(config, {
         key: 'default-text-model',
-        value: 'MiniMax-M2.7-highspeed',
+        value: 'MiniMax-M2.5',
         quiet: false,
         verbose: false,
         noColor: true,

test/commands/config/show.test.ts

@@ -5,7 +5,7 @@ import { default as showCommand } from '../../../src/commands/config/show';
 mock.module('../../../src/config/loader', () => ({
   readConfigFile: () => ({
     api_key: 'sk-cp-test-key',
-    default_text_model: 'MiniMax-M2.7-highspeed',
+    default_text_model: 'MiniMax-M2.5',
     default_speech_model: 'speech-2.8-hd',
     default_video_model: 'MiniMax-Hailuo-2.3-6s-768p',
     default_music_model: 'music-2.6',
@@ -89,7 +89,7 @@ describe('config show command', () => {
       });
 
       const parsed = JSON.parse(output);
-      expect(parsed.default_text_model).toBe('MiniMax-M2.7-highspeed');
+      expect(parsed.default_text_model).toBe('MiniMax-M2.5');
       expect(parsed.default_speech_model).toBe('speech-2.8-hd');
       expect(parsed.default_video_model).toBe('MiniMax-Hailuo-2.3-6s-768p');
       expect(parsed.default_music_model).toBe('music-2.6');

test/commands/text/chat.test.ts

@@ -112,7 +112,7 @@ describe('text chat command', () => {
       baseUrl: 'https://api.mmx.io',
       output: 'json',
       timeout: 10,
-      defaultTextModel: 'MiniMax-M2.7-highspeed',
+      defaultTextModel: 'MiniMax-M2.5',
       verbose: false,
       quiet: false,
       noColor: true,
@@ -140,7 +140,7 @@ describe('text chat command', () => {
       });
 
       const parsed = JSON.parse(output);
-      expect(parsed.request.model).toBe('MiniMax-M2.7-highspeed');
+      expect(parsed.request.model).toBe('MiniMax-M2.5');
     } finally {
       console.log = originalLog;
     }
@@ -268,7 +268,7 @@ describe('text chat command', () => {
       baseUrl: 'https://api.mmx.io',
       output: 'json',
       timeout: 10,
-      defaultTextModel: 'MiniMax-M2.7-highspeed',
+      defaultTextModel: 'MiniMax-M2.5',
       verbose: false,
       quiet: false,
       noColor: true,

test/utils/model-defaults.test.ts

@@ -33,13 +33,13 @@ function resolveModel(
 
 describe('model resolution (flag > config default > fallback)', () => {
   it('uses flag when provided', () => {
-    const model = resolveModel('defaultTextModel', 'MiniMax-M2.7', baseConfig, { model: 'MiniMax-M2.7-highspeed' });
-    expect(model).toBe('MiniMax-M2.7-highspeed');
+    const model = resolveModel('defaultTextModel', 'MiniMax-M2.7', baseConfig, { model: 'MiniMax-M2.5' });
+    expect(model).toBe('MiniMax-M2.5');
   });
 
   it('falls back to config default when flag is absent', () => {
-    const model = resolveModel('defaultTextModel', 'MiniMax-M2.7', { ...baseConfig, defaultTextModel: 'MiniMax-M2.7-highspeed' }, {});
-    expect(model).toBe('MiniMax-M2.7-highspeed');
+    const model = resolveModel('defaultTextModel', 'MiniMax-M2.7', { ...baseConfig, defaultTextModel: 'MiniMax-M2.5' }, {});
+    expect(model).toBe('MiniMax-M2.5');
   });
 
   it('falls back to hardcoded when neither flag nor config', () => {