fix(integrations): restore _clear/_update_init_options public imports

重构拆分集成命令时,_clear_init_options_for_integration 和
_update_init_options_for_integration 移到了 integrations/_helpers.py,
但测试仍从顶层 specify_cli 导入,导致 ImportError。在 __init__.py 末尾
以显式别名形式重新导出,恢复公共导入接口。

Author: darion-yaphet

src/specify_cli/__init__.py

@@ -628,6 +628,12 @@ def version(
 from .integrations._commands import register as _register_integration_cmds  # noqa: E402
 _register_integration_cmds(app)
 
+# Re-exported from integrations/_helpers.py to preserve the public import surface.
+from .integrations._helpers import (  # noqa: E402
+    _clear_init_options_for_integration as _clear_init_options_for_integration,
+    _update_init_options_for_integration as _update_init_options_for_integration,
+)
+
 
 def _require_specify_project() -> Path:
     """Return the current project root if it is a spec-kit project, else exit."""