~anthropic/claude-sonnet-latest → B (8:2)

Side B removes a whole redundant module (parser_render.rs), consolidates it into html/mod.rs, deletes a stale vote-panel form, adds a bb.edn dev task for hot-reloading, and updates tests/CSS accordingly—real structural cleanup and dead-code removal. Side A is a minor nit-level UI tweak (removing a toolbar button, shortening button labels) with no structural or functional improvement.