Replace broken Taylor series sin/cos approximations with math.Sin/math.Cos
in both engine/match.go and cmd/acb-mapgen. The Taylor series produced
incorrect results for angles > π, causing wrong positions in 3+ player maps.
Upgrade map generator wall placement from random scatter to cellular
automata (B5/S4 rule, 4 iterations) with rotational symmetry enforcement
and connectivity validation. Add comprehensive mapgen tests and dominance
win condition tests.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add engine package with toroidal grid, game state, turn execution
- Implement focus-fire combat resolution with simultaneous deaths
- Add fog of war visibility filtering for bot state
- Implement energy collection (contested resources denied)
- Add bot spawning at active cores
- Implement win conditions: elimination, draw, dominance, turns
- Add replay JSON writer for match recording
- Add match runner with concurrent bot communication
- Add CLI tools: acb-local (match runner), acb-mapgen (map generator)
- Add comprehensive unit tests (26 tests passing)
Exit criteria met: can run complete 500-turn matches and produce valid replays
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
