feat: add hanzo-flow package (re-exports hanzoflow CLI as hanzo-flow)

pkg/hanzo-flow/README.md

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+# hanzo-flow
+
+Hanzo Flow — visual workflow builder for AI applications.
+
+## Install
+
+```bash
+pip install hanzo-flow
+```
+
+## Usage
+
+```bash
+hanzo-flow run --host 0.0.0.0 --port 7860
+```
+
+Part of the [Hanzo Python SDK](https://github.com/hanzoai/python-sdk).

pkg/hanzo-flow/pyproject.toml

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+[project]
+name = "hanzo-flow"
+version = "1.8.0"
+description = "Hanzo Flow — visual workflow builder for AI applications"
+license = "MIT"
+authors = [{ name = "Hanzo AI", email = "[email protected]" }]
+requires-python = ">=3.12"
+dependencies = [
+    "hanzoflow>=1.8.0",
+]
+
+[project.scripts]
+hanzo-flow = "langflow.langflow_launcher:main"
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/hanzo_flow"]

pkg/hanzo-flow/src/hanzo_flow/__init__.py

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+"""Hanzo Flow — visual workflow builder for AI applications.
+
+This package re-exports hanzoflow and provides the `hanzo-flow` CLI command.
+"""
+__version__ = "1.8.0"
+
+# Re-export for convenience
+try:
+    from langflow import load_flow_from_json, run_flow  # noqa: F401
+except ImportError:
+    pass