Phase 4 of the evolution arc. Mostly an ADR (docs/evolution/04-*.md) that honestly evaluates rewriting the two-tower model in Rust + tch-rs and rejects it for stated reasons (autograd/ecosystem/maintenance), optionally with a small supporting benchmark. Blocked on Phase 3. Review standard: the argument must read as engineering reasoning, not rationalization.
Phase 4 of the evolution arc. Mostly an ADR (
docs/evolution/04-*.md) that honestly evaluates rewriting the two-tower model in Rust + tch-rs and rejects it for stated reasons (autograd/ecosystem/maintenance), optionally with a small supporting benchmark. Blocked on Phase 3. Review standard: the argument must read as engineering reasoning, not rationalization.