layout_revision(shape, hardpoints) is the revision rule replace_layout and Package share.
SHIP_ID_CHARS and RESERVED_SHIP_IDS mirror ShipAuthoringStore.RequireShipId; ShipSchemaPinTests
sweeps every character and every candidate stem against the C# rule. ship_cc errors no longer
carry the path, mount id, anchor id or object name. C# tests: create judges the ID not the
display name, FindRoot answers the working directory itself, short trailing-dot IDs.
Builds: yes (C# test edits and Python only).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>