PR #4: core/cashu /v1/info + Layer B + scheduler

packages/core/src/cache/schema.test.ts

@@ -19,12 +19,14 @@ afterEach(async () => {
 });
 
 describe("BitcoinmintsDB schema", () => {
-  it("opens at version 1 with all 6 tables present", async () => {
+  it("opens at version 2 with all 6 tables present", async () => {
     const db = new BitcoinmintsDB(freshName());
     toDispose.push(db);
     await db.open();
 
-    expect(db.verno).toBe(1);
+    // v2 adds the [kind+createdAt] compound index to announcements (used by
+    // restoreWatermarks for bounded .last() lookups per kind).
+    expect(db.verno).toBe(2);
     const names = db.tables.map((t) => t.name).sort();
     expect(names).toEqual(
       ["announcements", "mintAggregate", "mintInfo", "profiles", "relayLists", "reviews"].sort(),
@@ -60,8 +62,14 @@ describe("BitcoinmintsDB schema", () => {
         .schema.indexes.map((ix) => ix.name)
         .sort();
 
-    // announcements secondary indexes: eventId, kind, d, createdAt
-    expect(indexNames("announcements")).toEqual(["createdAt", "d", "eventId", "kind"]);
+    // announcements secondary indexes: eventId, kind, d, createdAt + compound [kind+createdAt]
+    expect(indexNames("announcements")).toEqual([
+      "[kind+createdAt]",
+      "createdAt",
+      "d",
+      "eventId",
+      "kind",
+    ]);
     // reviews secondary indexes: eventId, d, createdAt, k
     expect(indexNames("reviews")).toEqual(["createdAt", "d", "eventId", "k"]);
     // mintInfo secondary: fetchedAt, ok

packages/core/src/cache/schema.ts

@@ -142,5 +142,14 @@ export class BitcoinmintsDB extends Dexie {
       mintInfo: "d, fetchedAt, ok",
       mintAggregate: "d, bayesianRank, updatedAt",
     });
+    // v2: add compound `[kind+createdAt]` index on announcements so the
+    // scheduler's restoreWatermarks() can do a bounded `.last()` lookup
+    // per kind instead of materializing the entire table via .sortBy().
+    // Dexie auto-migrates additive index changes; existing rows get re-
+    // indexed on first open. fake-indexeddb supports compound indexes
+    // (verified in scheduler.restoreWatermarks watermark-restore tests).
+    this.version(2).stores({
+      announcements: "[pubkey+kind+d], eventId, kind, d, createdAt, [kind+createdAt]",
+    });
   }
 }

packages/core/src/cashu/index.ts

@@ -0,0 +1,10 @@
+export {
+  createMintInfoFetcher,
+  type FetchMintInfoOptions,
+  fetchMintInfo,
+  type MintInfoFetcher,
+  type MintInfoFetcherOptions,
+  type MintInfoResult,
+  type MintInfoV1,
+} from "./info";
+export { type LayerBResult, verifySignerBinding } from "./layerB";