feat(python): add zeroclaw-tools companion package for LangGraph tool calling

- Add Python package with LangGraph-based agent for consistent tool calling
- Provides reliable tool execution for providers with inconsistent native support
- Includes tools: shell, file_read, file_write, web_search, http_request, memory
- Discord bot integration included
- CLI tool for quick interactions
- Works with any OpenAI-compatible provider (Z.AI, OpenRouter, Groq, etc.)

Why: Some LLM providers (e.g., GLM-5/Zhipu) have inconsistent tool calling behavior.
LangGraph's structured approach guarantees reliable tool execution across all providers.

python/pyproject.toml

@@ -0,0 +1,66 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "zeroclaw-tools"
+version = "0.1.0"
+description = "Python companion package for ZeroClaw - LangGraph-based tool calling for consistent LLM agent execution"
+readme = "README.md"
+license = "MIT"
+requires-python = ">=3.10"
+authors = [
+    { name = "ZeroClaw Community" }
+]
+keywords = [
+    "ai",
+    "llm",
+    "agent",
+    "langgraph",
+    "zeroclaw",
+    "tool-calling",
+]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Scientific/Engineering :: Artificial Intelligence",
+]
+dependencies = [
+    "langgraph>=0.2.0",
+    "langchain-core>=0.3.0",
+    "langchain-openai>=0.2.0",
+    "httpx>=0.25.0",
+]
+
+[project.scripts]
+zeroclaw-tools = "zeroclaw_tools.__main__:main"
+
+[project.optional-dependencies]
+discord = ["discord.py>=2.3.0"]
+telegram = ["python-telegram-bot>=20.0"]
+dev = [
+    "pytest>=7.0.0",
+    "pytest-asyncio>=0.21.0",
+    "ruff>=0.1.0",
+]
+
+[project.urls]
+Homepage = "https://github.com/zeroclaw-labs/zeroclaw"
+Documentation = "https://github.com/zeroclaw-labs/zeroclaw/tree/main/python"
+Repository = "https://github.com/zeroclaw-labs/zeroclaw"
+Issues = "https://github.com/zeroclaw-labs/zeroclaw/issues"
+
+[tool.hatch.build.targets.wheel]
+packages = ["zeroclaw_tools"]
+
+[tool.ruff]
+line-length = 100
+target-version = "py310"
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"