Add poison tick at start of enemy turn

src/combat.js

@@ -38,11 +38,24 @@ export function startTurn(state) {
 export function resolveEnemyTurn(state) {
   // reset block on all enemies before they act
   const enemies = state.enemies.map((e) => ({ ...e, block: 0 }));
-  let next = { ...state, enemies, enemy: enemies[0] };
+
+  // poison tick — damage and decrement before enemies act
+  const afterPoison = enemies.map((e) => {
+    if (e.poison > 0) {
+      return {
+        ...e,
+        hp: Math.max(0, e.hp - e.poison),
+        poison: e.poison - 1,
+      };
+    }
+    return e;
+  });
+  let next = { ...state, enemies: afterPoison, enemy: afterPoison[0] };
 
   // each enemy acts; enemies target player 0 by default
   for (let i = 0; i < next.enemies.length; i++) {
     const enemy = next.enemies[i];
+    if (enemy.hp <= 0) continue; // dead enemies don't act
     const action = resolveEnemyAction(
       enemy,
       next.combat.dieResult,

src/combat.test.js

@@ -221,4 +221,36 @@ describe("poison tick", () => {
     const next = resolveEnemyTurn(state);
     expect(next.enemies[0].poison).toBe(0);
   });
+
+  test("enemy killed by poison does not act", () => {
+    let state = createCombatState("ironclad", "jaw_worm");
+    const poisonedEnemy = { ...state.enemies[0], poison: 10, hp: 3 };
+    state = {
+      ...state,
+      enemies: [poisonedEnemy],
+      enemy: poisonedEnemy,
+      players: [{ ...state.players[0], hp: 11, block: 0 }],
+      player: { ...state.players[0], hp: 11, block: 0 },
+      combat: { ...state.combat, dieResult: 1 },
+    };
+    const next = resolveEnemyTurn(state);
+    expect(next.enemies[0].hp).toBe(0);
+    expect(next.players[0].hp).toBe(11); // enemy died before acting
+  });
+
+  test("poison ignores enemy block", () => {
+    let state = createCombatState("ironclad", "jaw_worm");
+    const blockedEnemy = { ...state.enemies[0], poison: 3, hp: 10, block: 5 };
+    state = {
+      ...state,
+      enemies: [blockedEnemy],
+      enemy: blockedEnemy,
+      combat: { ...state.combat, dieResult: 1 },
+    };
+    const next = resolveEnemyTurn(state);
+    expect(next.enemies[0].hp).toBe(7); // 10 - 3, block didn't absorb poison
+    // block resets at turn start; enemy may regain some via action — not 5 from before
+    expect(next.enemies[0].block).toBeLessThan(5);
+    expect(next.enemies[0].poison).toBe(2);
+  });
 });

src/render.js

@@ -23,6 +23,7 @@ function renderEnemy(state) {
   if (enemy.vulnerable > 0) tokens.push(`vuln ${enemy.vulnerable}`);
   if (enemy.weak > 0) tokens.push(`weak ${enemy.weak}`);
   if (enemy.strength > 0) tokens.push(`str ${enemy.strength}`);
+  if (enemy.poison > 0) tokens.push(`psn ${enemy.poison}`);
   statusEl.textContent = tokens.join(" | ");
 
   const intentEl = document.getElementById("enemy-intent");