Finalize classifier-assisted tagging updates

Add classifier-assisted tagging pipeline

Add exact n-gram retrieval query hints

Roll out T5 rewrite updates, tooling, docs, and artifact ignore rules

Add tooltip override system and curate top-1000 tooltip fixes

Add technical subtitle and domain-generalization docs section

Refresh pipeline contract docs to match current runtime behavior

Inject architecture section only in accordion, keep docs file clean

Inject architecture diagram by heading and ignore runtime timing log

Render architecture diagram as embedded static PNG in docs section

Update docs diagrams, evaluation labels, and analysis artifacts

Consolidate pending pipeline, structural, and analysis updates

Add alias-based character tag filtering for Stage 3