fix: Handle undefined command names in getCommandName function (#217)

* fix: reorder tool and user messages for OpenAI API compatibility (#168)
Fixes #168
OpenAI requires that an assistant message with tool_calls be immediately
followed by tool messages. Previously, convertInternalUserMessage
output user content before tool results, causing 400 errors.
Now tool messages are pushed first.

* fix: 修复OpenAI兼容层中deferred tools处理问题

  提交描述:
  修复了在使用OpenAI兼容API时TaskCreate工具调用失败的问题。

  问题:
  - 当使用OpenAI兼容API模型时，调用TaskCreate工具出现"InputValidationError: The required
  parameter `subject` is missing"错误
  - OpenAI兼容层没有正确处理deferred tools的过滤逻辑，导致工具schema没有被正确发送给模型

  修复:
  1. 在OpenAI兼容层中添加了与Anthropic API路径一致的deferred tools处理逻辑
  2. 导入必要的工具搜索相关函数: isToolSearchEnabled, extractDiscoveredToolNames,
  isDeferredTool等
  3. 实现工具过滤逻辑:
     - 检查工具搜索是否启用
     - 构建deferred tools集合
     - 过滤工具列表: 只包含非deferred工具或已发现的deferred工具
     - 为deferred tools设置deferLoading标志
  4. 修正了extractDiscoveredToolNames函数的导入路径错误

  影响:
  - 解决了TaskCreate工具调用时的参数验证错误
  - 确保OpenAI兼容层与Anthropic API路径在处理deferred tools时行为一致
  - 支持工具搜索功能在OpenAI兼容模式下正常工作

  修改的文件:
  - src/services/api/openai/index.ts - 主要修复文件

  测试建议:
  1. 使用OpenAI兼容API模型时，TaskCreate工具应该可以正常调用
  2. 如果工具搜索功能启用，可能需要先使用ToolSearchTool来发现TaskCreate工具
  3. 验证工具调用时不再出现"InputValidationError"错误

  这个修复确保了当使用OpenAI兼容API（如Ollama、DeepSeek、vLLM等）时，deferred
  tools（如TaskCreate）能够被正确处理，解决了工具调用失败的问题。

* fix: 更新未发送工具架构提示，提供OpenAI兼容模型的使用步骤

* fix: Handle undefined command names in getCommandName function

- Modified getCommandName in src/types/command.ts to return empty string instead of undefined when cmd.name is undefined
- Added null checks in src/hooks/useTypeahead.tsx to safely handle command names
- Prevents "undefined is not an object" error when FEATURE_BUDDY=1 and FEATURE_FORK_SUBAGENT=1 are enabled

The error occurred because getCommandName(cmd) could return undefined when cmd.name was undefined, causing .length access to fail.

src/types/command.ts

@@ -207,7 +207,8 @@ export type Command = CommandBase &
 
 /** Resolves the user-visible name, falling back to `cmd.name` when not overridden. */
 export function getCommandName(cmd: CommandBase): string {
-  return cmd.userFacingName?.() ?? cmd.name
+  const name = cmd.userFacingName?.() ?? cmd.name
+  return name || ''
 }
 
 /** Resolves whether the command is enabled, defaulting to true. */