Logical groups: public surface, SDK, recipe, compute, engine, CLI, TUI.

CLI	Argv dispatch, help, status, and terminal rendering
Compute	GPU and CPU tools: trace, SAE, evals, steer, simulate, diffs
Engine	Local daemon, tool registry, session memory, HTTP bridge
Public surface	import aqit and the aqit CLI
Recipe loop	DataRevision → train → Checkpoint → EvalGate
SDK	aquin.sdk: same capabilities as the CLI, callable from Python
TUI	Textual app and Ink-bridge fallback surfaces