feat: module 02 action queue

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

course/02-action-queue/reference/ts/src/content/index.ts

@@ -0,0 +1,30 @@
+// Content: card definitions. Only this directory may name specific cards.
+//
+// Each effect is a small function that returns engine actions. Module 5
+// replaces these functions with card data the engine interprets.
+
+import { CardLibrary, minion, spell } from "../engine";
+
+/** Every card this game knows. */
+export function library(): CardLibrary {
+  return new CardLibrary([
+    // Fictional test minion with no text.
+    minion("Test Filler", 1, 1),
+    // "Whenever a friendly minion takes damage, gain 1 Armor."
+    minion("Armorsmith", 1, 4, [
+      { on: "friendlyMinionDamaged", effect: (c) => [{ type: "gainArmor", player: c.owner, amount: 1 }] },
+    ]),
+    // "Whenever this minion takes damage, draw a card."
+    minion("Acolyte of Pain", 1, 4, [{ on: "selfDamaged", effect: (c) => [{ type: "draw", player: c.owner }] }]),
+    // Fictional: "Whenever a minion takes damage, deal 1 damage to the enemy hero."
+    minion("Test Echo", 1, 5, [
+      { on: "anyMinionDamaged", effect: (c) => [{ type: "damage", targets: [c.enemyHero()], amount: 1 }] },
+    ]),
+    // Fictional: "Whenever a hero takes damage, gain +1 Attack."
+    minion("Test Reactor", 1, 5, [
+      { on: "heroDamaged", effect: (c) => [{ type: "gainAttack", id: c.minion(), amount: 1 }] },
+    ]),
+    // "Deal 1 damage to ALL minions."
+    spell("Whirlwind", (c) => [{ type: "damage", targets: c.world.minionsInPlay(), amount: 1 }]),
+  ]);
+}