Add $ARGUMENTS placeholder to the /openspec:archive slash command to allow explicit change ID specification, improving safety and matching CLI behavior.
Changes:
- Add $ARGUMENTS to archive command frontmatter in OpenCode configurator
- Update archive command template with argument validation steps
- Add rewriteArchiveFile method to handle managed section updates
- Update AGENTS.md documentation for archive command usage
This change makes it possible for users to run `/openspec:archive <change-id>` instead of relying on context inference, reducing the risk of archiving the wrong change.
Tabish Bidiwale