⚔️ Melee Area Damage Migration Tool

The Problem: The recent Reign of the Warlock update added new game stats that use the same internal IDs (361-363) as the old Melee Area Damage mod. This causes errors when loading characters or stashes with melee area damage items.

The Solution: This tool scans your save files and updates melee area damage items to use new stat IDs (500-502) that don't conflict with the game's stats. Your items will work exactly the same, just with different internal IDs.

What to do:

1. Backup your saves (typically in C:\Users\[YourName]\Saved Games\Diablo II Resurrected\)
2. Drop your .d2s (character) or .d2i (stash) files into this tool
3. Download the migrated files and replace your originals
4. Test with one file first before migrating everything

Detection Algorithm: The tool uses precise 86-bit pattern matching to find melee area damage stats. The stats appear as a triplet with this exact structure:
[361:9bit][param:16bit][value:7bit][362:9bit][value:18bit][363:9bit][value:18bit]
migrated to: 500→501→502

Only the complete triplet is detected to avoid false positives. The chance of random data matching this exact 86-bit pattern is astronomically low, making this approach highly reliable. Stats 362/363 represent damage reduction and are only present when that feature was enabled in your mod config.