openai/gpt-chat-latest → A (3:2)

Side A replaces a fragile hand-maintained list of test namespaces with a single auto-discovered `:all` Kaocha suite using `^test\..+`, so new `test.*` files are automatically executed without editing `tests.edn`, reducing ongoing maintenance and preventing missed tests. Side B is largely a structural refactor that moves forum code into new modules and adds a macOS-specific profiling helper (`sample-fixture`), which improves organization and tooling but introduces little new core project behavior.