fix: 修复 OpenAI provider （gpt-5.4/gpt-5.3-codex等模型）下 内建mcp__plugin_weixin_weixin__reply 微信工具不可见的问题 (#359)

* fix: 修复 OpenAI provider 下 MCP 工具不可见

* docs: 补充 OpenAI MCP 工具列表注释

* fix: 修正 OpenAI Langfuse 输入记录

* refactor: 使用类型守卫收窄 Langfuse role

* fix: 保留 Langfuse OpenAI 数组消息角色

* fix: 合并 Langfuse OpenAI tool_calls

* fix: 修复 OpenAI Langfuse 类型检查

src/services/api/claude.ts

@@ -1340,7 +1340,10 @@ async function* queryModel(
   // media stripping) but before Anthropic-specific logic (betas, thinking, caching).
   if (getAPIProvider() === 'openai') {
     const { queryModelOpenAI } = await import('./openai/index.js')
-    yield* queryModelOpenAI(messagesForAPI, systemPrompt, filteredTools, signal, options)
+    // OpenAI emulates Anthropic's dynamic tool loading client-side. It needs
+    // the full tool pool so ToolSearchTool can search deferred MCP tools that
+    // were intentionally filtered out of the initial API tool list above.
+    yield* queryModelOpenAI(messagesForAPI, systemPrompt, tools, signal, options)
     return
   }