Fix CI failures: staticmethod not callable and missing dunders

- Remove staticmethod wrapper from numpy on_import lambda since the
  value is stored as a slot attribute, not a class attribute
- Add __call__, __iter__, __bool__ dunder methods to _coconut_lazy_module
  so Python's type-level dunder lookup works correctly (needed for
  lru_cache proxy on Python < 3.10 and general robustness)

https://claude.ai/code/session_01KBLQLYTdfjLPaR2UJhgnkq

Author: claude

coconut/compiler/templates/header.py_template

@@ -39,11 +39,17 @@ class _coconut_lazy_module{object}:
             _coconut_lazy_module._coconut_base_setattr(self, name, value)
         else:
             _coconut.setattr(_coconut_lazy_module._coconut_base_getattr(self, "_coconut_load")(), name, value)
+    def __call__(self, *args, **kwargs):
+        return _coconut_lazy_module._coconut_base_getattr(self, "_coconut_load")()(*args, **kwargs)
+    def __iter__(self):
+        return _coconut.iter(_coconut_lazy_module._coconut_base_getattr(self, "_coconut_load")())
     def __dir__(self):
         try:
             return _coconut.dir(_coconut_lazy_module._coconut_base_getattr(self, "_coconut_load")())
         except _coconut.ImportError:
             return _coconut_lazy_module.__slots__
+    def __bool__(self):
+        return True
 @_coconut_wraps(_coconut_py_super)
 def _coconut_super(type=None, object_or_type=None):
     if type is None:
@@ -85,7 +91,7 @@ class _coconut{object}:{COMMENT.EVERYTHING_HERE_MUST_BE_COPIED_TO_STUB_FILE}
     typing.__getattr__ = _typing_getattr
     _typing_getattr = staticmethod(_typing_getattr)
 {set_zip_longest}
-    numpy = _coconut_lazy_module("numpy", on_import=staticmethod(lambda np: _coconut.abc.Sequence.register(np.ndarray)))
+    numpy = _coconut_lazy_module("numpy", on_import=lambda np: _coconut.abc.Sequence.register(np.ndarray))
     numpy_modules = {numpy_modules}
     xarray_modules = {xarray_modules}
     pandas_modules = {pandas_modules}