feat(market-index): store MOEX index closes with confirmed coverage (WealthLedger/main#54)

prisma/migrations/20261107214500_add_market_index_history/migration.sql

@@ -0,0 +1,15 @@
+CREATE TABLE "MarketIndexDailyClose" (
+    "secid" TEXT NOT NULL,
+    "tradeDate" TEXT NOT NULL,
+    "close" TEXT NOT NULL,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT "MarketIndexDailyClose_pkey" PRIMARY KEY ("secid","tradeDate")
+);
+
+CREATE TABLE "MarketIndexSyncState" (
+    "secid" TEXT NOT NULL PRIMARY KEY,
+    "lastAttemptAt" DATETIME,
+    "lastSuccessAt" DATETIME,
+    "coveredFrom" TEXT,
+    "coveredTo" TEXT
+);