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spec(port): port the decoy message payload entropy guard (Refs #8887) - #9834
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…y-S-AI-DNA#8887) The twenty-second CR-CHAT-07 ring target (W2, R-CHAT-10): the decoy-entropy rules - the batch ceiling, then per decoy the length floor (32), the length ceiling (16384), the all-identical probe, the unique-byte floor (the original's rounded-then-truncated double check) and the max-frequency ceiling (a third of the payload) - as the D5 verdict with every payload field, the original's rule order, and all ten DMPE tests transcribed plus helper and rule-order tests. The original's BTreeMap byte-frequency table becomes the fixed 256-slot counter table of the entropy lane: unique_count counts the nonzero slots, max_freq scans them, the fixture tables are built by byte-index loops with the index arithmetic in usize - no narrowing anywhere. Checks (conventions 0-14): t27b test 12 passed 0 failed; t27c test-report 12/12, 0 vacuous; gen-rust output compiles under rustc; coverage Untested 0; ASCII only; seal saved, all hashes MATCH;
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Merge request for the gHashTag merger: steward READY (required all SUCCESS — validate, check-linked-issue, parse-ratchet, t27b-native-linux, t27b-native-macos; the red ones are non-required per Q16 and red on master too). Ledger row included; one-line rebase if the earlier lane PRs land first — I take it on request. |
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Refs #8887 (CR-CHAT-07 ring tracker). Parent epic: Trinity-S-AI-DNA/trios#1812 (W2, own lane, T-PORT). Twenty-second CR-CHAT-07 ring target delivered: the decoy-entropy rules (R-CHAT-10) — batch ceiling (4096), per-decoy length floor (32) / ceiling (16384), all-identical probe, unique-byte floor (the original's rounded-then-truncated double check, DMPE-01 answers LowUniqueRatio{2, 64}), max-frequency ceiling (a third of the payload; DMPE-02 answers HighFreqRatio{50, 64}) — D5 verdict with every payload field, original rule order, all ten DMPE tests transcribed plus helper and rule-order tests (12 total, 0 vacuous). BTreeMap freq → fixed 256-slot counter table (the entropy-lane form); fixture tables built by byte-index loops, index arithmetic in usize, no narrowing. Honest adaptations: the record's length field takes the name payload_len and the verdict's the name length — a field named len makes the gen-rust backend emit a broken slice length (documented); the original's 4097-record DMPE-06 fixture is 8.5 MB of records (2064 B each), over the runner's stack — the ceiling rule stays in code and the largest buildable batch (1500 records, ≈3.1 MB, the proven pkdu-class size) pins the guard green at scale (documented, the CDUG-06 precedent). t27b 12/12 native; t27c 12/12; gen-rust compiles under rustc (0 errors, 0 &'static str, 0 Vec<const); coverage Untested 0; seal all hashes MATCH; ledger row included (pass, non-pass untouched). Dedup checked. (Branch w carries the amended commit after a local pre-PR amend — the stale v branch is left untouched, no force-push.) Sequencing: one-line ledger rebase if the earlier lane PRs land first — I take it on request.