Export RateLimiterPlugin from package __init__

[jonpspri]

Summary

• Re-export RateLimiterPlugin in cpex_rate_limiter/__init__.py
• Fixes AttributeError: module 'cpex_rate_limiter' has no attribute 'RateLimiterPlugin'

Test plan

• from cpex_rate_limiter import RateLimiterPlugin works

[Copilot]

Pull request overview

This PR addresses an import ergonomics issue in the cpex_rate_limiter plugin package by re-exporting RateLimiterPlugin at the package root, enabling from cpex_rate_limiter import RateLimiterPlugin and avoiding an AttributeError.

Changes:

• Re-export RateLimiterPlugin from cpex_rate_limiter/__init__.py.
• Define __all__ to make the public export explicit.

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[Copilot]

Importing RateLimiterPlugin at package import time will eagerly import cpex_rate_limiter.rate_limiter, which unconditionally imports mcpgateway.plugins.framework. Since mcpgateway is not a declared runtime dependency, this makes even import cpex_rate_limiter fail in environments that don’t have the host gateway installed. Consider switching to a lazy re-export (e.g., module-level getattr/delayed import) so only from cpex_rate_limiter import RateLimiterPlugin triggers the dependency, and plain package import remains lightweight.

Suggested change

	from cpex_rate_limiter.rate_limiter import RateLimiterPlugin
	__all__ = ["RateLimiterPlugin"]
	from typing import TYPE_CHECKING
	if TYPE_CHECKING: # pragma: no cover - for type checkers only
	from .rate_limiter import RateLimiterPlugin
	__all__ = ["RateLimiterPlugin"]
	def __getattr__(name):
	"""Lazily provide RateLimiterPlugin to avoid importing heavy dependencies at package import time."""
	if name == "RateLimiterPlugin":
	from .rate_limiter import RateLimiterPlugin as _RateLimiterPlugin
	return _RateLimiterPlugin
	raise AttributeError(f"module {__name__!r} has no attribute {name!r}")

[Copilot]

This package ships an __init__.pyi stub that currently only exports rate_limiter_rust. Re-exporting RateLimiterPlugin only in __init__.py means type checkers will still report cpex_rate_limiter.RateLimiterPlugin as missing. Update the stub generation / __init__.pyi interface to include RateLimiterPlugin (and keep all consistent) so the new public import is reflected in typing.

Suggested change

	__all__ = ["RateLimiterPlugin"]
	from cpex_rate_limiter import rate_limiter_rust
	__all__ = ["RateLimiterPlugin", "rate_limiter_rust"]

[Copilot]

The PR’s intent is to support from cpex_rate_limiter import RateLimiterPlugin, but there’s no test asserting that import path works. Add a small test (e.g., in the existing tests suite) that imports RateLimiterPlugin from the package root to prevent regressions.