~anthropic/claude-sonnet-latest → A (65:35)

Side A eliminates an ~1800-line over-engineered, admittedly unreliable keystroke-parsing graph and its associated test/dependency (parser_action.rs, parser_race.clj, Playwright setup) and replaces it with a small, robust 87-line URL parser plus simple paste-and-go UI — a substantial net simplification and reliability fix to production code. Side B fixes real bugs in test-mock infrastructure (regex vs string split, wrong stream calls, redirect response codes, nil state), which is valuable but scoped narrowly to test harness correctness rather than the application's core design.