Add Go implementations of 5 strategy bots directly into the engine:
- GathererBot: prioritizes energy collection, avoids combat
- RusherBot: aggressively rushes enemy cores
- GuardianBot: defends cores with cautious expansion
- SwarmBot: formation-based coordinated movement
- HunterBot: targets isolated enemy units
Update acb-local with bot selection flags:
- -bot0/-bot1: select bot strategies
- -list-bots: list available strategies
- Default to gatherer vs rusher for interesting gameplay
Enables demo replays with real strategic behavior without K8s infrastructure.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>