~x-ai/grok-latest → A (70:30)

A moves ~1800-line legacy/parser.rs into server/src/ (with parser_action.rs + parser_render.rs), wires parse_reddit_url into ui_html.rs/home, adds the persistent #parser-panel + JS tab/DB-suggestion handling, and updates tests/integration/*.rs. These are concrete, shipped functionality and clean module boundaries. B only tweaks bb.edn, walkthrough_fixture.clj and .gitignore for cargo-watch + fixture-data/; that improves local iteration but changes no production paths or design.