Adds researched 1x2 armor-grid expansion harness equipment for extra character inventory capacity without runtime scripts.

What it changes

BerbCorp Expansion Harness adds three equipable inventory-bonus modules:

• Mk1: +100 character inventory slots
• Mk2: +200 character inventory slots
• Mk3: +500 character inventory slots

Each harness occupies a 1x2 armor-grid shape. Mk2 upgrades from Mk1, and Mk3 upgrades from Mk2.

Why

Large factories need more personal carrying space, but the mod stays UPS-conscious by using Factorio's native equipment and technology prototypes instead of runtime scripting.

Compatibility

The mod adds new equipment, items, recipes and technologies. It does not overwrite the vanilla character inventory size.

Balance

Research progression uses three tiers:

• Tier 1: red + green science, 200 packs
• Tier 2: red + green + blue + military science, 500 packs
• Tier 3: red + green + blue + military + purple + yellow science, 800 packs

Safe for existing saves

Safe to add to existing saves. If removed later, unequip the harnesses first so the character inventory can shrink cleanly.