training fix.add global settings

backend/database/migration_add_image_dimensions.sql

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+-- Migration: Add width and height columns to image table
+-- Date: 2025-11-27
+
+USE myapp;
+
+-- Add width and height columns to image table
+ALTER TABLE `image` 
+ADD COLUMN `width` FLOAT NULL AFTER `image_path`,
+ADD COLUMN `height` FLOAT NULL AFTER `width`;
+
+-- Verify the changes
+DESCRIBE `image`;