chore(release): bump version to 0.1.1 and harden packaging

- version 0.1.1; build floor hatchling>=1.26 for PEP 639 license string
- drop deprecated 'License :: OSI Approved :: MIT License' classifier
- add sdist allowlist so internal artifacts (.planning, AGENTS.md, uv.lock,
  CODE-REVIEW.md, caches) never ship to PyPI
- refresh uv.lock for 0.1.1

Author: ebarti

pyproject.toml

@@ -1,10 +1,10 @@
 [build-system]
-requires = ["hatchling>=1.25"]
+requires = ["hatchling>=1.26"]
 build-backend = "hatchling.build"
 
 [project]
 name = "agent-runtime-kit"
-version = "0.1.0"
+version = "0.1.1"
 description = "One typed runtime API for Claude, Codex, and Antigravity agent SDKs."
 readme = "README.md"
 requires-python = ">=3.10"
@@ -14,7 +14,6 @@ keywords = ["agents", "claude", "codex", "antigravity", "sdk"]
 classifiers = [
     "Development Status :: 3 - Alpha",
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -51,6 +50,9 @@ dev = [
 [tool.hatch.build.targets.wheel]
 packages = ["src/agent_runtime_kit"]
 
+[tool.hatch.build.targets.sdist]
+include = ["src", "tests", "docs", "examples", "README.md", "LICENSE", "pyproject.toml"]
+
 [tool.ruff]
 line-length = 100
 target-version = "py310"