chore: update readme (#41)

Author: drew

README.md

@@ -1,9 +1,16 @@
 # OpenShell Community
 
+[![License](https://img.shields.io/badge/License-Apache_2.0-blue)](https://github.com/NVIDIA/OpenShell/blob/main/LICENSE)
+[![PyPI](https://img.shields.io/badge/PyPI-openshell-orange?logo=pypi)](https://pypi.org/project/openshell/)
+[![Security Policy](https://img.shields.io/badge/Security-Report%20a%20Vulnerability-red)](SECURITY.md)
+[![Project Status](https://img.shields.io/badge/status-alpha-orange)](https://docs.nvidia.com/openshell/latest/about/release-notes.html)
+
 [OpenShell](https://github.com/NVIDIA/OpenShell) is the runtime environment for autonomous agents -- the infrastructure where they live, work, and verify. It provides a programmable factory where agents can generate synthetic data to fix edge cases and safely iterate through thousands of failures in isolated sandboxes. The core engine includes the sandbox runtime, policy engine, gateway (with k3s harness), privacy router, and CLI.
 
 This repo is the community ecosystem around OpenShell -- a hub for contributed skills, sandbox images, launchables, and integrations that extend its capabilities. For the core engine, docs, and published artifacts (PyPI, containers, binaries), see the [OpenShell](https://github.com/NVIDIA/OpenShell) repo.
 
+> Alpha software — single-player mode. OpenShell is proof-of-life: one developer, one environment, one gateway. We are building toward multi-tenant enterprise deployments, but the starting point is getting your own environment up and running. Expect rough edges. Bring your agent.
+
 ## What's Here
 
 | Directory    | Description                                                                       |