Set up PAGA as a remote tool

Validation status (2026-08-16): Scanpy/PAGA, loopback discovery/call, and invalid-cluster rejection passed on connected deterministic trajectories, including the current finite 3 x 3 matrix. A fully disconnected fixture still triggers a sanitized upstream failure. Public publication, cross-user isolation, representative accuracy, broad concurrency, and recovery remain incomplete. Authenticated private Platform import and owner testing passed on 2026-08-16; public publication and independent-caller authorization/isolation remain untested.

Prerequisites

• Run from the ToolUniverse repository root on Linux with Python 3.12.3.
• CPU sufficient for small datasets.
• Keep provider data, weights, caches, and credentials outside Git.
• Bind to loopback. A non-loopback bind requires TOOLUNIVERSE_API_TOKEN; never put it in arguments or results.

Run the standard-library contract check before downloading large dependencies:

python scripts/remote_validation/setup_skill_preflight.py --implementation paga