Added

• Numerical ID support — Use pre-1.13 numerical block/item IDs as source values in remap configs (e.g., "source": "35:14" for red wool). Includes a built-in flattening table covering all vanilla blocks and items with metadata variants.
• Identify command — /remapids id block shows the registry ID of the block you're looking at, /remapids id hand shows the registry ID of the item in your main hand. Both display active remap information when relevant.