Remove Serbian colors including Braon from database

- Remove Serbian color entries from schema.sql
- Add migration to delete Serbian colors from existing databases
- Add migration runner scripts for easier database updates
- Install pg package for PostgreSQL client support

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: DaX <noreply@anthropic.com>

scripts/run-migration.js

@@ -0,0 +1,57 @@
+const { Pool } = require('pg');
+const fs = require('fs');
+const path = require('path');
+
+// Parse connection string from environment or command line
+const connectionString = process.env.DATABASE_URL || process.argv[2];
+
+if (!connectionString) {
+  console.error('Please provide DATABASE_URL as environment variable or command line argument');
+  console.error('Example: node run-migration.js "postgresql://user:pass@host:port/db"');
+  process.exit(1);
+}
+
+const pool = new Pool({
+  connectionString,
+  ssl: {
+    rejectUnauthorized: false // For AWS RDS
+  }
+});
+
+async function runMigration() {
+  try {
+    // Read the migration file
+    const migrationPath = path.join(__dirname, '../database/migrations/004_remove_brand_column.sql');
+    const migrationSQL = fs.readFileSync(migrationPath, 'utf8');
+    
+    console.log('Running migration: 004_remove_brand_column.sql');
+    console.log('SQL:', migrationSQL);
+    
+    // Execute the migration
+    await pool.query(migrationSQL);
+    
+    console.log('✅ Migration completed successfully!');
+    
+    // Verify the column was removed
+    const result = await pool.query(`
+      SELECT column_name 
+      FROM information_schema.columns 
+      WHERE table_name = 'filaments' 
+      AND column_name = 'brand'
+    `);
+    
+    if (result.rows.length === 0) {
+      console.log('✅ Verified: brand column has been removed');
+    } else {
+      console.log('⚠️  Warning: brand column still exists');
+    }
+    
+  } catch (error) {
+    console.error('❌ Migration failed:', error.message);
+    process.exit(1);
+  } finally {
+    await pool.end();
+  }
+}
+
+runMigration();