The spec promised that the first live task would measure xrefs. It never
did: the plan measures model space, paper space and block definitions. 1.6
does not read an xref's own entities on either engine; the host drawing is
what gets read. The snapshot docstring and drawing_understand's docstring
now say so, and nothing is claimed about the live engine that was never
measured.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
Read a drawing somebody else made and turn it into a deliverable: a one-call
drawing report (units that lie, stray extents, plan copies, multilingual layer
meaning), a scale check between a P&ID and its layout, pipe and cable takeoffs
whose topology comes from the P&ID and whose lengths come from the layout, a
revision diff by geometric signature, and topology checks. Grounded in a real
client project read locally (never committed): its P&ID proved to be
unscaled against its layout, which no tool had flagged.
Six tools (+ pack plant), three topo_* focuses, the office extra, a live DXF
snapshot through Document.Export (measured: the document is not renamed), and
synthetic fixtures that reproduce the field findings.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
