freecad-0003: CrossSection::removeDuplicates O(W^2*E) wire dedup via
std::find_if over growing list; fix: hash-keyed seen-set O(W*E log E).
Severity MEDIUM-HIGH, ~200x at W=400 duplicate wires.
freecad-0004: SketchAnalysis::detectMissingEqualityConstraints O(C*M^2)
std::find_if over std::list of equal-line/radius candidates; fix:
unordered_multimap keyed on canonical (GeoId,GeoId) pair, O(C).
Severity MEDIUM-HIGH, ~5x at C=50/M=50, grows with M^2.
kicad-0003: BOARD_NETLIST_UPDATER::testConnectivity calls FindPadByNumber
(O(P) linear scan) for each of N pins per footprint; fix: build
unordered_map<padNumber,PAD*> once per footprint, O(P+N) total.
Severity HIGH, ~19x at P=256 pads, ~512x at P=512 pads.
MOAD-0002/0003/0004/0005: CLEAN for both projects (documented in SCAN-NOTES).
russell@unturf.com
3bf7ed2cec