Display observation (Cyd, on-cabinet): held F0000000 through the clean
handshake and four NAK-then-ACK sub-threshold cycles, flipped exactly at
the 5th teardown to E0000105. That reading recalibrates the counters:
$3184 counts give-up cycles (not per-retransmit) and $3185 counts
teardowns of any imperfect reply cycle — the counter behind the original
lone E0000001. Also recorded: 5 retransmits per cycle (not 4), reply-
await arms only after the complete frame, NAK forces exactly one counted
retransmit, and a late ACK cannot rescue a cycle once retries begin.
Tool predictor updated to the confirmed semantics.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
CydandClaude Fable 5
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