- add crowd.cpp / crowd_script.cpp to test/CMakeLists.txt explicit list (check_test_manifest.py requires every test source to be listed) - remove unused 'c' variable in removeAgentSwapPop that trips /W4 /WX
- CrowdField: Dijkstra integration field to continuous gradient flow field with bilinear sampling, terrain cost and multi-goal support - Crowd: SOA simulation for massive crowds - flow/seek/boids/idle actions, turn-rate-limited heading, Boids separation/alignment/ cohesion, wall penetration resolution, per-frame counting-sort spatial grid and overlap relaxation - Squirrel API: eve.Crowd with batch getPositions/getHeadings - example: examples/crowd (2000-agent marching / boids demo) - tests: flow field correctness, turning, seek arrival, boids convergence, wall penetration, 20k-agent smoke + script round-trip