openai/gpt-chat-latest → A (5:2)

Side A introduces a substantial architectural improvement by separating path normalization into `canonical_path.rs` and identity parsing into `identity.rs`, removing identity rewriting from the reducer, enforcing strict stored-form usernames/agent IDs at API boundaries, and making delegates optional throughout ingest and event handling. Side B fixes a real bug around canonical ontology root paths (`https://slug.social/~` vs `.../~/`), normalizes storage keys, and adds strong regression tests, but its impact is narrower and focused on one path-normalization issue rather than the broader API and data model redesign in Side A.