Installed global OpenSpec Witness schema bundle (version 3).
Includes schema.yaml and templates (proposal, design, spec,
tasks, plan, verify, retrospective).
Artifact DAG: proposal → design → specs → tasks → plan → verify,
with retrospective requiring both plan and verify — the schema
blocks archive closeout until the verification record exists.
apply requires plan and tracks progress in tasks.md.
Meant to be installed under ~/.local/share/openspec/schemas/witness.
Companion global OpenCode commands and skills live in the separate
config-opencode repo.