Translate Opportunist, Aggressive and Risky trainer AI

Add the AI_Opportunist, AI_Aggressive and AI_Risky scoring layers with
the ROM's stall, reckless and risky tables, HP thresholds, last-wins
ties and strict knockout test. AIDamageCalc is ported as a
pre-variation damage estimate, including a critical-hit flag left over
from an earlier move, which the original also reads. Smart remains the
only refused layer, so the rival stays gated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/game/battle/constants.ts

@@ -15,7 +15,10 @@ export const C = {
   EFFECT_MULTI_HIT: 29,
   EFFECT_CONVERSION: 30,
   EFFECT_TOXIC: 33,
+  EFFECT_OHKO: 38,
   EFFECT_RAZOR_WIND: 39,
+  EFFECT_SUPER_FANG: 40,
+  EFFECT_STATIC_DAMAGE: 41,
   EFFECT_DOUBLE_HIT: 44,
   EFFECT_JUMP_KICK: 45,
   EFFECT_ATTACK_DOWN_2: 58,
@@ -54,6 +57,8 @@ export const C = {
   EFFECT_SUBSTITUTE: 79,
   EFFECT_LEECH_SEED: 84,
   EFFECT_DISABLE: 86,
+  EFFECT_LEVEL_DAMAGE: 87,
+  EFFECT_PSYWAVE: 88,
   EFFECT_ENCORE: 90,
   EFFECT_SLEEP_TALK: 97,
   EFFECT_MEAN_LOOK: 106,