feat(cli): scaffold cli/calm-to-archify — CALM → Archify JSON IR transformer

[MLKiiwy]

Summary

Build a small CLI tool at cli/calm-to-archify/ that transforms CALM .arch.json files into the JSON IR format used by Archify (vendor/archify). This enables generating interactive system-map HTML presentations from CALM files.

Context

Archify does not natively support CALM. Its input format is a custom typed JSON IR (see vendor/archify/DESIGN.md). This transformer bridges the two. It is intentionally a thin conversion layer — not a general architecture analysis tool.

Acceptance criteria

• CLI tool scaffolded with bash scripts/new-package.sh calm-to-archify (or equivalent)
• calm-to-archify <input.arch.json> produces a valid Archify JSON IR file
• Handles node types: actor, system, service, database
• Handles relationship types: connects, deployed-in, composed-of
• Covered by unit tests (Vitest)
• Nx project.json with build/test/typecheck targets

Notes

• Deferred from the initial epic PR — do not block on this for the architecture-as-code PR merge
• Archify IR schema reference: vendor/archify/DESIGN.md and examples in vendor/archify/examples/

Epic: architecture-as-code (Issue #116)