Restructure technical report to ACL format, add Phase 0 gold eval methodology

Regenerate UDD-WS v1.1 dataset and update annotation tooling

Add Label Studio annotation tooling and dictionary plugins for AL Cycle 1

Improve WS sentence quality filters, diversity sampling, and update technical report

Add AL Cycle 0 uncertainty scoring and move udtools to tools/

Fix v1.1 WS dataset: cross-boundary splits, long token decomposition, compound merges

Add v1.1 word segmentation dataset, annotation guidelines, and research references

Add word segmentation dataset pipeline and technical report v1.1

Expand UDD-1 to 40K sentences across 5 domains