Data normalization

[brian-gates]

Problem

Data is often stored denormalized. For example, instances of AttackResult contain full Character copies for both attacker and defender

adventure-bot/packages/game/src/attack/AttackResult.ts

Lines 5 to 6 in a10ab77

	attacker: Character
	defender: Character

This bloats memory usage and doesn't align well with database storage.

Instead, we could normalize, storing just ids and restoring the original shape with a selector.

attackerId: string;
defenderId: string;

[brian-gates]

How can we approach this problem incrementally?