The header audit and per-folder docs pass produced a corpus with properties
worth capturing before they are forgotten: deterministic chunk boundaries,
section type as a retrieval filter, and an index that cannot leak credentials
because the conf files were never tracked.
The estimates in the original note were wrong in both directions, and Unraid's Apply does
not reliably recreate a container, which is worth knowing before the next tuning pass.
Captures the reasoning behind a not-yet-built feature so the constraints survive the
session, chiefly that AI stays enhancement-only and never load-bearing.