Marquee architecture document: top-level Mermaid diagram of the audio-graph
fan-out + agent loop + bus, subsystem deep-dives for the 13 packages,
cross-cutting concerns (concurrency, TCC, codesign, the 18 boundary gates),
the audit-derived anti-pattern list, and a where-things-live cheat sheet.
Reflects post-audit-2026-05-04 reality including the deferred work
(B-8 Orpheus, D-5/D-6/D-7 memory environment, AppDelegate split).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>