add: migrations directory

prisma/migrations/20260304225056_init/migration.sql

@@ -0,0 +1,5 @@
+-- CreateTable
+CREATE TABLE "PhotoPost" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);

prisma/migrations/migration_lock.toml

@@ -0,0 +1,3 @@
+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "sqlite"