This is a backpack mod, the backpacks have augments that give them extra utilities, and theres different tiers of backpacks, I also added energy/item/fluid pipes and a steam engine to test that the energy/fluid transfer for it works correctly.

The motivation for it was so my friendwho wants to play cobblemon in fabric but sophisticated backpacks could use backpacks but those don't exist in fabric.

Fabricated Backpacks 0.5.2 Alpha

Alpha software: back up your worlds before testing this build.

For Minecraft 26.2 with Fabric Loader 0.19.3+, Fabric API 0.158.0+26.2, and Java 25. Install Fabric API alongside this mod.

Changes

• All twelve configurable gameplay bindings now stay inactive while any menu is open, whether bound to a keyboard key or mouse button. Typing B in a search field no longer opens a backpack.
• Storage slots and backpack previews show full exact item counts, with scaling for long numbers.
• Settings and icon controls now explain their current behavior while Shift is held, including depth, filters, and jukebox controls.
• Compacting accepts only exact reversible recipes without crafting remainders. It will compact ingots into blocks, but will not choose lossy outputs such as trapdoors or sandstone.
• Basic jukebox upgrades now hold two records. Advanced jukeboxes default to 24 records, support previous/next pages, and can be configured up to 256 slots. A 200-record library was tested across its first, middle, and last pages with real sound playback.
• Old advanced-jukebox configs migrate their historical 12-slot default to 24 while preserving custom sizes and deliberate modern 12-slot settings.
• Diamond Backpack help and the recipe browser now make Netherite progression clear: combine the vanilla Netherite Upgrade Smithing Template, a Diamond Backpack, and a Netherite Ingot. Stored contents and backpack components are preserved.

Verification

• 410 deterministic generated asset/data files verified current.
• 31 asset/model/recipe tests passed against the exact Minecraft 26.2 client JAR.
• Java unit tests passed from a clean build.
• All 170 required server GameTests passed.
• Real-client input isolation scenario passed in a newly created world.
• Real-client 200-record jukebox paging and playback scenario passed in a newly created world.
• Production JAR inspection found no GameTest or test-mod entries.

Main JAR SHA-256: fffa0c462888d0f83656887e4795ffd8b4178b134c4462fc4c5bab7a2e43964b