AGC 客户端不再写死 gpt-6-astra 默认模型

- main.rs：DEFAULT_GAME_CREATOR_LLM_MODEL 改用官方占位标识 platform-default
- game-creator.config.json：首启模板 llm.model 同步为 platform-default
- check-config.mjs 与客户端测试同步该口径，去掉已退役模型名的断言

apps/ai-game-creator-shell/game-creator.config.json

@@ -6,7 +6,7 @@
     "visibleModels": [],
     "apiKey": "",
     "baseUrl": "https://dev.genarrative.world/gpt/v1",
-    "model": "gpt-6-astra",
+    "model": "platform-default",
     "apiKind": "openai_responses",
     "reasoningEffort": "max",
     "stream": true,

apps/ai-game-creator-shell/scripts/check-config.mjs

@@ -1497,6 +1497,15 @@ if (defaultAppConfig.llm?.apiKey !== '') {
   throw new Error('AI game creator shell default llm.apiKey must stay empty');
 }
 
+// 首次启动模板必须写入官方路由占位模型（与 config.rs 的
+// OFFICIAL_LLM_ROUTER_DEFAULT_MODEL 同源）：钉死具体上游模型名会随上游目录
+// 变动失效，留空则首启配置不合法。
+if (defaultAppConfig.llm?.model !== 'platform-default') {
+  throw new Error(
+    'AI game creator shell default llm.model must stay the official route placeholder',
+  );
+}
+
 if (defaultAppConfig.agentMode !== 'codex_app_server') {
   throw new Error(
     'AI game creator shell default agentMode must be codex_app_server',

apps/ai-game-creator-shell/src-tauri/src/main.rs

@@ -1457,7 +1457,9 @@ const GAME_CREATOR_AGENT_MODE_CODEX_CLI: &str = "codex_cli";
 const GAME_CREATOR_AGENT_MODE_PROVIDER: &str = "provider";
 const GAME_CREATOR_APP_CONFIG_SCHEMA_VERSION: &str = "game-creator-config.v2";
 const DEFAULT_GAME_CREATOR_LLM_BASE_URL: &str = "https://dev.genarrative.world/gpt/v1";
-const DEFAULT_GAME_CREATOR_LLM_MODEL: &str = "gpt-6-astra";
+// 默认模型不再写死具体上游模型名：正式构建锁定官方路由，
+// 未选择平台目录模型时该占位标识表示“跟随平台默认”（与 config.rs 同源）。
+const DEFAULT_GAME_CREATOR_LLM_MODEL: &str = OFFICIAL_LLM_ROUTER_DEFAULT_MODEL;
 const DEFAULT_GAME_CREATOR_LLM_API_KIND: &str = "openai_responses";
 const DEFAULT_GAME_CREATOR_LLM_REASONING_EFFORT: &str = "high";
 const DEFAULT_GAME_CREATOR_LLM_CONTEXT_WINDOW_TOKENS: u64 = 128_000;

apps/ai-game-creator-shell/src-tauri/src/tests/configuration.rs

@@ -554,6 +554,11 @@ fn canonical_agent_reasoning_effort_defaults_are_exhaustive_and_auditable() {
         template.llm.as_ref().and_then(|llm| llm.max_retries),
         Some(DEFAULT_GAME_CREATOR_LLM_MAX_RETRIES)
     );
+    assert_eq!(
+        template.llm.as_ref().and_then(|llm| llm.model.as_deref()),
+        Some(DEFAULT_GAME_CREATOR_LLM_MODEL),
+        "首次启动模板必须写入官方路由占位模型，不能钉死具体上游模型名"
+    );
     assert!(
         template.agent_llm.unwrap_or_default().is_empty(),
         "bundled template must not persist canonical defaults as explicit overrides"

apps/ai-game-creator-shell/tests/conversationModelSelect.test.tsx

@@ -297,7 +297,7 @@ test('only displays aliases and persists selection through the native command',
   const onReady = vi.fn();
   render(<ConversationModelSelect disabled={false} onReady={onReady} />);
   await screen.findByRole('button', { name: '对话模型' });
-  expect(screen.queryByText('gpt-6-astra')).toBeNull();
+  expect(screen.queryByText('quality')).toBeNull();
   fireEvent.click(screen.getByRole('button', { name: '对话模型' }));
   fireEvent.click(screen.getByRole('option', { name: '快速' }));
   await waitFor(() =>