Caret and control characters added to the filename guard, file-keyed in-flight
registry replacing the row-scoped one, try/catch around spawn, single finish()
exit path, UTF-8 chunk decoding, bounded output buffer.
index.md groups integration-dead-ends and leave-less-room-for-imagination
under Machine side, and both are absent from the script. The claim that every
absent concept is human-side or strategy-side was wrong: it is 8 of 10.
Corrections made during execution as reviews surfaced defects in the plan
itself: duplicate raw-path claim handling and its one-pass orphaned filter,
unescaped-pipe table split, RAW_EXTENSIONS widening, dark accent tracking the
installed theme, the bare node --test command, and test counts.
