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

Side B introduces a substantial new architectural mechanism—a generic form-template/RPC system (form_template.rs, ui_action.rs, ui_html.rs) with tests, unifying disparate POST handlers into a single /ui endpoint—which is broader infrastructure with lasting reuse value. Side A adds a genuinely useful but narrower feature (pool-scoped voting) that is well-integrated but smaller in scope and reuses B's own ui_html.rs machinery (built atop it), making B foundational and A incremental.