Inventory Manager: Smart Storage

# Inventory Manager Smart Storage 26.3 - 1.3.0-alpha.4

## Added

- Initial Fabric port for Minecraft Java Edition 26.3, retaining inventory sorting, chest management, favorites and automatic deposits.

## Changed

- Updated keyboard, mouse and text-field handling for Minecraft 26.3.
- Updated the displayed mod name to "Inventory Manager Smart Storage 26.3".
- Kept the internal mod ID and configuration paths unchanged.

## Fixed

- Prevented optional JEI mixins from being loaded when JEI is not installed.
- Added container and slot checks to the creative inventory synchronization path, targeting the reported out-of-bounds disconnection during item updates. This fix still needs further in-game validation.

## Notes

- Alpha build for Minecraft Java Edition 26.3 and Fabric only.
- Requires Fabric Loader 0.19.5 or newer, a compatible Fabric API build for 26.3, and Java 25.
- Dedicated-server and third-party mod compatibility have not been fully validated for this port.
- Back up your worlds and configurations before testing.
- Please report issues with the relevant logs and reproduction steps.