openai/gpt-chat-latest → A (3:1)

Side A delivers a substantial architectural improvement: it removes the temporary demo counter feature, introduces a dedicated settlement worker that batches vote persistence and ranking recomputation, adds cached ranking reads (`ranked_items_cached`), warms the cache on startup, and switches HTTP paths from write locks to read locks for ranking display. Side B is a solid correctness change that consistently enforces vote ratio bounds (1–100) across the UI, DSL parser, reducer, and tests, but it is a narrower validation fix compared with A's broader, lasting simplification and performance-oriented redesign.