✨Feature: implement town market functionality with treasure selling and stashing

src/rules/town.test.ts

@@ -0,0 +1,74 @@
+import { describe, expect, it } from "vitest";
+
+import { sampleContentPack } from "@/data/sampleContentPack";
+
+import { createStartingAdventurer } from "./character";
+import { createRunState } from "./runState";
+import { queueTreasureForSale, sellPendingTreasure, sendTreasureToStash } from "./town";
+
+function createAdventurer() {
+  return createStartingAdventurer(sampleContentPack, {
+    name: "Aster",
+    weaponId: "weapon.short-sword",
+    armourId: "armour.leather-vest",
+    scrollId: "scroll.lesser-heal",
+  });
+}
+
+describe("town flow", () => {
+  it("moves treasure from carried inventory into the stash", () => {
+    const run = createRunState({
+      content: sampleContentPack,
+      campaignId: "campaign.1",
+      adventurer: createAdventurer(),
+    });
+
+    run.adventurerSnapshot.inventory.carried.push({
+      definitionId: "item.silver-clasp",
+      quantity: 1,
+    });
+
+    const result = sendTreasureToStash(
+      sampleContentPack,
+      run,
+      "item.silver-clasp",
+      "2026-03-15T15:00:00.000Z",
+    );
+
+    expect(result.run.townState.stash).toEqual([
+      { definitionId: "item.silver-clasp", quantity: 1 },
+    ]);
+    expect(result.run.adventurerSnapshot.inventory.carried).not.toEqual(
+      expect.arrayContaining([expect.objectContaining({ definitionId: "item.silver-clasp" })]),
+    );
+  });
+
+  it("queues treasure and sells it for item value", () => {
+    const run = createRunState({
+      content: sampleContentPack,
+      campaignId: "campaign.1",
+      adventurer: createAdventurer(),
+    });
+
+    run.adventurerSnapshot.inventory.carried.push({
+      definitionId: "item.keeper-keyring",
+      quantity: 1,
+    });
+
+    const queued = queueTreasureForSale(
+      sampleContentPack,
+      run,
+      "item.keeper-keyring",
+      "2026-03-15T15:05:00.000Z",
+    ).run;
+    const sold = sellPendingTreasure(
+      sampleContentPack,
+      queued,
+      "2026-03-15T15:06:00.000Z",
+    ).run;
+
+    expect(sold.townState.pendingSales).toEqual([]);
+    expect(sold.adventurerSnapshot.inventory.currency.gold).toBe(5);
+    expect(sold.log.at(-1)?.text).toContain("for 5 gold");
+  });
+});