forge-lfs protocol for large file storage

[LiranCohen]

Summary

Design and implement a forge-lfs protocol for storing large binary files in DWN records, providing git-LFS-equivalent functionality.

Context

PLAN.md Section 11.2 describes the approach: a dedicated forge-lfs protocol with $size constraints for binary data. Git LFS pointers in the repo would reference DWN records instead of a centralized LFS server.

Design considerations

• Protocol with $size constraints to cap individual blob sizes
• Content-addressable storage (SHA-256 keyed) to enable deduplication
• Integration with git-LFS client via custom transfer adapter or LFS API shim
• Bandwidth-friendly: chunked upload/download for large files
• Access control via the existing role model (repo maintainer/contributor roles)

Dependencies

• Requires protocol definition (new src/lfs.ts)
• Requires LFS transfer adapter or API shim
• May need changes to bundle sync to exclude LFS-tracked files from git bundles