wesnoth-0001: A* pathfinding std::find on pq vector for decrease-key
O(V*Q) per relaxation, fix: lazy deletion. HIGH, 1279x at N=5000.
wesnoth-0002: server ip_log_ deque linear scan on login/logoff
O(N) per event with N up to 500. MEDIUM, 437x at L=2000.
wesnoth-0003: combine_special_notes O(N^2) vector dedup
utils::contains on vector per note insertion. MEDIUM, 499x at N=1000.
MOAD-0002 (Intertangle): singletons deeply embedded, not actionable.
MOAD-0003 (Leaked Context): thread_local for debug/call-stack only.
MOAD-0004 (Logged Secret): passwords never logged verbatim.
MOAD-0005 (Thundering Herd): single-threaded game + coroutine server.
6/6 unit tests PASS.
russell@unturf.com
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