forbes-0023
7c85b2ad93
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When parts with structured part numbers (e.g., P03-0001) are inserted into an assembly multiple times, UniqueNameManager::decomposeName() treats the trailing digits as an auto-generated suffix and increments them (P03-0002, P03-0003), corrupting the part number. Add a makeInstanceLabel() helper in AssemblyLink.cpp that appends -N instance suffixes instead (P03-0001-1, P03-0001-2). All instances get a suffix starting at -1 so the original part number is never modified. Applied at all three Label.setValue() sites in synchronizeComponents() (AssemblyLink, link group, and regular link creation paths). Also add a UniqueNameManager test documenting the trailing-digit decomposition behavior for structured part numbers. Closes #327