Read: issues (filtered by team/assignee/state/label/project), issue (with comments),
search, teams, projects, cycles, states, labels, me
Write: create, update, comment — all with --json and --dry-run
Meta: schema introspection, help

Agent DX: JSON output, --fields, --limit, --json input, --dry-run,
input hardening, schema with field lists, AGENTS.md with invariants.

34 tests: validation (14), output (3), integration against live API (17).
Built on @linear/sdk v82.