Set Development Status classifier to Production/Stable (#2975)

RELEASE.md

@@ -49,6 +49,3 @@ for alphas, later `bN`/`rcN` for betas and release candidates.
    Yanking doesn't stop `==` pins from installing the broken version, so set
    the yank reason (and edit the GitHub release notes) to point at the
    replacement version.
-5. When the line moves to a new stage (first beta, first release candidate,
-   stable), update the `Development Status` classifier in `pyproject.toml`
-   before tagging — PyPI uploads are immutable.

pyproject.toml

@@ -14,7 +14,7 @@ maintainers = [
 keywords = ["mcp", "llm", "automation"]
 license = { text = "MIT" }
 classifiers = [
-    "Development Status :: 3 - Alpha",
+    "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Developers",
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",