card_game/AGENTS.md

Agent rules

Read docs/FOUNDATION.md and docs/ARCHITECTURE.md before large refactors.

• Game.Core must not depend on Godot.
• All randomness must go through GameRng. Simulation and presentation share one rules engine.
• UI must not implement game rules. Presentation renders GameState and plays GameEvents.
• Adding or changing core rules requires adding or updating tests.
• Ordinary cards should use standard effects. Do not invent a general-purpose scripting language.
• Changing the content schema requires updating the validator and docs/CONTENT_SCHEMA.md.
• Changing event resolution order requires checking related tests.
• Do not create a global rule for a single card.
• Prefer the smallest working implementation. Do not optimize until there is a measured bottleneck.
• Freeze the 11 core actions in docs/RULES.md. New “archetypes” are combinations, conditions, or keywords — not new primitive events.
• Card packs are in-run only. Unlock state must reset with the run. Do not add cross-run / meta unlocks.