~anthropic/claude-sonnet-latest → A (6:4)

Side A removes an unreliable, ~1800-line keystroke-parsing state machine (plus its debounce/race-mitigation JS and a whole Playwright race test) and replaces it with a much simpler, correct paste-and-go flow, eliminating a real class of bugs and maintenance burden. Side B is a solid type-safety refactor (Deref impls, CanonicalItemUrl propagation) that reduces stringly-typed bugs, but it's incremental internal cleanup rather than fixing a demonstrably broken user-facing feature.