openai/gpt-chat-latest → A (3:2)

Side A replaces manually enumerated Kaocha test suites with a single auto-discovered `:all` suite using `^test\..+`, so new `test.*` namespaces run automatically without updating `tests.edn`, reducing ongoing maintenance and preventing missed tests. Side B mostly adds a large planning document plus a thin `RouteContext` wrapper around `ThreadNav` with re-exports and forwarding methods, which establishes an abstraction but introduces little immediate functional change.