v0.5.0

Install

copilot plugin marketplace add Lando-00/porthole
copilot plugin install porthole@porthole-marketplace

Then the companion VS Code extension, which the annotations,
walkthroughs, Problems-panel access, saved reviews, symbol lookup,
sidebar and "Send to Copilot" all depend on:

code-insiders --install-extension porthole-companion-0.3.0.vsix

Run /porthole in an interactive session to check the install.

Full Changelog: v0.4.0...v0.5.0