- Implement rules_validator.py with config-driven action validation for all 11 action types
- Implement win_conditions.py with point/prize-based, knockout, deck-out, turn limit, and timeout checks
- Add ForcedAction model to GameState for blocking actions (e.g., select new active after KO)
- Add ActiveConfig with max_active setting for future double-battle support
- Add TrainerConfig.stadium_same_name_replace option
- Add DeckConfig.starting_hand_size option
- Rename from_energy_deck to from_energy_zone for consistency
- Fix unreachable code bug in GameState.get_opponent_id()
- Add 16 coverage gap tests for edge cases (card registry corruption, forced actions, etc.)
- 584 tests passing at 97% coverage
Completes HIGH-005, HIGH-006, TEST-009, TEST-010 from PROJECT_PLAN.json
- Add CardDefinition and CardInstance models for card templates and in-game state
- Add Attack, Ability, and WeaknessResistance models for Pokemon card components
- Add 11 action types as discriminated union (PlayPokemon, Evolve, Attack, etc.)
- Split PokemonStage (BASIC, STAGE_1, STAGE_2) from PokemonVariant (NORMAL, EX, GX, V, VMAX, VSTAR)
- Stage determines evolution mechanics, variant determines knockout points
- Update PrizeConfig to use variant for knockout point calculation
- VSTAR and VMAX both worth 3 points; EX, GX, V worth 2 points; NORMAL worth 1 point
Tests: 204 passing, all linting clean
