v1.2.0: pixi Environments & Download Hardening

What's Changed

🧪 pixi environments

• In pixi projects, PyPilot selects the pixi environment (.pixi/envs/default) as the interpreter and recommended notebook kernel, and re-selects it after pixi install. A stray .venv in a pixi project is never selected
• Requires helper v1.2.0, which manages pixi projects through pixi (see the engine release)

🛡 Hardening (thanks @BazilSuhail, #1)

• More reliable helper downloads: HTTP errors are reported clearly, redirects are capped, timeouts added, partial downloads cleaned up
• Workspace tasks run the resolved helper, so they work when pypilot is not on PATH
• The doctor report panel escapes its content and only links http(s) URLs

🏠 New home

• The extension now lives at pypilot-dev/pypilot-vscode; the README, issue links and CONTRIBUTING point there

Full Changelog: v1.1.1...v1.2.0