revert(llm): restore eight-emotion production model

feat(llm): deploy 73-emotion browser model

docs: record teacher corpus outcome [skip ci]

fix(emotions): generate web contract from Rust

feat(emotions): add comprehensive child-safe registry

docs: note HF migration plan and queued UI restorations [skip ci]

feat(web): starship bridge interior with window band, crew consoles, and roller-duck crewmates

docs: mark chat-experience plan complete

docs: chat-experience plan, vision, and architecture [skip ci]

docs: vision and rust-canonical architecture [skip ci]

feat: typescript synthesis core, web app with animated duck, and docs