fix: stop drift migration from dropping tracking table

apps/api/src/prisma/migrate.ts

@@ -185,7 +185,16 @@ export async function runMigrations(prisma: PrismaClient): Promise<MigrationResu
     const legacyName = LEGACY_NAME_ALIASES[file.name];
     if (appliedNames.has(file.name) || (legacyName && appliedNames.has(legacyName))) continue;
 
-    const statements = splitSqlStatements(readFileSync(file.path, 'utf8'));
+    const statements = splitSqlStatements(readFileSync(file.path, 'utf8')).filter(
+      (statement) => {
+        // Prisma migrate diff once emitted DROP TABLE "_goldbank_migrations"
+        // because that tracking table exists in the live DB but not in schema.
+        // Never allow a migration to destroy our own bookkeeping.
+        const normalized = statement.replace(/\s+/g, ' ').trim().toLowerCase();
+        return !normalized.startsWith(`drop table "${TRACKING_TABLE.toLowerCase()}"`)
+          && !normalized.startsWith(`drop table ${TRACKING_TABLE.toLowerCase()}`);
+      },
+    );
     await prisma.$transaction(
       async (tx) => {
         for (const statement of statements) {