Plan memo management tool for owner

Context

Owner has requested a memo management tool to make it easier to create and manage memos. This is a developer/operator tool (CLI script), not a web feature.

Related docs:

• docs/memo-spec.md — memo format, ID scheme, templates
• docs/workflow.md — memo routing rules

Request

Plan a memo management tool with the following requirements:

Required feature (MVP)

• Memo creation: A script/command that creates a new memo file with:
  • Auto-generated hex timestamp ID
  • Auto-populated YAML frontmatter (prompting for subject, from, to, tags, reply_to)
  • Correct filename (<id>-<kebab-case-subject>.md)
  • Placed in the correct recipient's inbox/ directory
  • Template body pre-filled based on memo type

Nice-to-have features (if practical)

• Inbox listing: Show unread memos for a given role
• Thread tracking: Show all memos in a thread (by reply_to chain)
• Archive command: Move a memo from inbox to archive
• Status overview: Dashboard showing memo counts per role (inbox/archive)

Technical constraints

• Must work as a CLI tool (Node.js script or shell script)
• Should be runnable with npx or as a package.json script
• Must follow the memo spec in docs/memo-spec.md exactly
• Should be simple and maintainable

Acceptance criteria

• Exact implementation plan for the memo creation feature
• List of additional features worth implementing (with effort estimates)
• File structure for the tool
• How to invoke the tool (CLI interface design)
• Rollback approach

Constraints

• Must comply with docs/constitution.md (immutable).
• Tool must produce memos that are 100% compliant with docs/memo-spec.md.
• Keep the implementation minimal. This is a utility, not a product.

Notes

• This tool is for developer/operator use, not end-user facing.
• Consider using TypeScript since the project already uses it.
• The tool should be usable by both human operators and AI agents.