test: add support for array suffixes in type expansion

Update `expandSchemaInString` to handle the `[]` suffix, allowing
type aliases to represent arrays (e.g., `IntentEffects[]`). Added a
fixture and test case to verify parsing of tuple arrays and type
aliases.

src/csv-loader/fixtures/enemy_intents.csv

@@ -0,0 +1,7 @@
+# type IntentEffectTarget = 'user' | 'eachEnemy' | 'randomEnemy' | 'player'
+# type IntentEffect = [IntentEffectTarget; string; number]
+# type IntentEffects = IntentEffect[]
+
+id,enemy,initialIntent,nextIntents,brokenIntent,effects
+string,string,boolean,string[],string[],IntentEffects
+仙人掌怪-boost,仙人掌怪,true,仙人掌怪-boost;仙人掌怪-defend,,[user;spike;1];[user;defend;4]

src/csv-loader/tests/parseCsv-combinators.test.ts

@@ -207,4 +207,28 @@ describe("parseCsv - references in combinatory schemas", () => {
       ],
     ]);
   });
+
+  it("should parse enemy_intents fixture with tuple arrays and type aliases", () => {
+    const enemyIntentsCsv = readFixture("enemy_intents.csv");
+
+    const result = parseCsv(enemyIntentsCsv, {
+      emitTypes: false,
+      currentFilePath: path.join(fixturesDir, "enemy_intents.csv"),
+    });
+
+    expect(result.data).toHaveLength(1);
+
+    expect(result.data[0]).toMatchObject({
+      id: "仙人掌怪-boost",
+      enemy: "仙人掌怪",
+      initialIntent: true,
+      nextIntents: ["仙人掌怪-boost", "仙人掌怪-defend"],
+      brokenIntent: [],
+    });
+
+    const effects = result.data[0].effects as unknown[][];
+    expect(effects).toHaveLength(2);
+    expect(effects[0]).toEqual(["user", "spike", 1]);
+    expect(effects[1]).toEqual(["user", "defend", 4]);
+  });
 });

src/csv-loader/type-declarations.ts

@@ -85,6 +85,14 @@ function expandSchemaInString(
     return expanded;
   }
 
+  // Handle array suffix: TypeName[] or [tuple][]
+  const trimmed = schemaString.trim();
+  if (trimmed.endsWith("[]")) {
+    const inner = trimmed.slice(0, -2);
+    const expandedInner = expandSchemaInString(inner, declaredTypes);
+    return `${expandedInner}[]`;
+  }
+
   // Handle union types (recursively expand each member)
   if (schemaString.includes("|")) {
     // Split by | but respect quotes