The header, global constraints, file structure, the interface block every task
builds against, the group/ownership table and the merge notes. Task sections
are drafted next.
Also corrects the spec's architecture section: the engineering tools compose
the generic contract members the way gear/keyway/titleblock already do, so only
four operations (xref_attach, xref_manage, image_attach, drawing_export_dwg)
need contract members and an implementation per engine.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd