openai/gpt-chat-latest → A (5:2)

Side A adds substantial project infrastructure and core functionality: a production Dockerfile and Fly.io deployment config, a reusable EventLog module that appends and reloads JSONL events with error handling and corrupt-line tolerance, and a persistent ViewStore that loads and atomically flushes view counts. Side B mainly improves the local development workflow by making the walkthrough fixture persistent with cargo-watch, preferred ports, and fixture reuse, plus a small UI cleanup, which is useful but has a narrower long-term impact on the project's architecture.