Add skip logic to migration scripts to prevent re-running

scripts/migrate-covers.mjs

@@ -1,6 +1,6 @@
 import { PrismaClient } from '@prisma/client';
 import { parseBuffer } from 'music-metadata';
-import { readFile, writeFile, mkdir } from 'fs/promises';
+import { readFile, writeFile, mkdir, access } from 'fs/promises';
 import path from 'path';
 import { fileURLToPath } from 'url';
 
@@ -11,6 +11,16 @@ const __dirname = path.dirname(__filename);
 const prisma = new PrismaClient();
 
 async function migrate() {
+    // Check if migration already ran
+    const flagPath = path.join(process.cwd(), '.covers-migrated');
+    try {
+        await access(flagPath);
+        console.log('✅ Cover migration already completed (flag file exists). Skipping...');
+        return;
+    } catch {
+        // Flag file doesn't exist, proceed with migration
+    }
+
     console.log('Starting cover art migration...');
 
     try {
@@ -55,6 +65,10 @@ async function migrate() {
         }
 
         console.log('Migration completed.');
+
+        // Create flag file to prevent re-running
+        await writeFile(flagPath, new Date().toISOString());
+        console.log(`🏁 Created flag file: ${flagPath}`);
     } catch (e) {
         console.error('Migration failed:', e);
     } finally {

scripts/migrate-release-years.mjs

@@ -122,6 +122,18 @@ async function getReleaseYear(artist, title) {
 // --- Migration Logic ---
 
 async function migrate() {
+    // Check if migration already ran
+    const flagPath = path.join(process.cwd(), '.release-years-migrated');
+    try {
+        const { access } = await import('fs/promises');
+        await access(flagPath);
+        console.log('✅ Release year migration already completed (flag file exists). Skipping...');
+        await prisma.$disconnect();
+        return;
+    } catch {
+        // Flag file doesn't exist, proceed with migration
+    }
+
     console.log('🎵 Starting release year migration...');
     console.log('━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━');