Trim License section to short form

Replace MIT LICENSE with Apache-2.0 to match base model

Relicense to Apache-2.0 to match CTI-BERT base model

README polish: double-blind wording, @misc citation, absolute repo links

Align README with paper: numbers, title, section refs

Upload CASSANDRA cassandra-bce-annoctr weights and metadata (anonymous CCS 2026 artifact)

Initial release: CASSANDRA cassandra-bce-annoctr (anonymous CCS 2026 artifact)

initial commit