Agent Skills: lisa-setup-linear

Configure Linear as the destination tracker and/or the PRD source for this project. Verifies Linear access (MCP OAuth or a personal API key in OS keychain), resolves the workspace slug and team key, scaffolds the build-queue **workflow states** (`linear.workflow`) when Linear is the tracker and/or the PRD-lifecycle project-label namespace (`prd-*`) when Linear is the PRD source, writes the `linear` section into `.lisa.config.json`, and offers to set top-level `tracker: \"linear\"` and/or `source: \"linear\"`. Idempotent — re-running updates the existing section and reuses existing labels. No /lisa:setup:atlassian prerequisite.