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spec(port): port the traffic shaping burst uniformity guard (Refs #8887) - #9870
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…nity-S-AI-DNA#8887) The thirty-second CR-CHAT-07 ring target (W2, R-CHAT-7): the shaped-burst uniformity rules - the count floor (two), the count ceiling (two hundred fifty-six), the first burst's size floor (sixty-four) and ceiling (sixty-five thousand five hundred thirty-six), the per-burst size walk (a size differing from the first answers before that burst's own floor and ceiling), and the interval uniformity walk over batches of three or more - as the D5 verdict (all six original variants carry no payload, so the code is the whole verdict), the original's rule order, and all ten TSBU tests transcribed plus re-basing and rule-order tests. The original casts timestamps to i64 to subtract the gaps; the gap equality is re-based additively - gap(i) equals gap(0) exactly when ts[i+1] + ts[0] equals ts[1] + ts[i], pure u64 addition - and a dedicated test pins the preserved edge: a uniformly decreasing batch stays accepted, as with the original's equal negative gaps. Batches of two skip the interval walk exactly as the original's length-three gate. 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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All required checks green (validate, check-linked-issue, parse-ratchet, t27b-native-linux, t27b-native-macos); cli-tri / duplicate-bodies / t27b-native-ratchet are the known non-required reds. Steward READY. Requesting owner merge when convenient — 32 of ~34 CR-CHAT-07 targets delivered, Refs #8887. |
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spec(policy): l2_generation -- gen/json/ is t27c gen-json's backend directory (Closes #10079)
#10082
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The thirty-second CR-CHAT-07 ring target (W2, R-CHAT-7, tracker #8887): port of
crates/trios-chat/rings/CR-CHAT-07/src/traffic_shaping_burst_uniformity_guard.rs.Traffic shaping hides message sizes by batching into uniform bursts; a non-uniform batch lets an observer tell padding from real traffic, fingerprint the user by timing and count messages by size. Rules, in the original's order:
Carried as the D5 verdict — all six original error variants carry no payload, so the code is the whole verdict.
Adaptation (t27 conventions): the original's
i64gap subtraction is re-based additively — gap(i) equals gap(0) exactly whents[i+1] + ts[0] == ts[1] + ts[i], pure u64 addition with no subtraction to underflow. A dedicated test pins the preserved edge semantics: a uniformly decreasing batch has equal negative gaps in the original and stays accepted.All 10 original TSBU tests transcribed with exact asserts, plus the re-basing edge test and a rule-order test (12 total): the count floor answers over a single tiny burst; the count ceiling answers over a flooded batch of tiny bursts; the first burst's size rules answer before the per-burst walk; the non-uniform probe answers before that burst's own floor; the size walk answers before the interval walk ever reads a timestamp.
Checks (conventions 0-14):
t27b test12 passed 0 failed, 0 blockers;t27c test-report12/12, 0 vacuous; gen-rust output compiles under rustc (0'static str, 0Vec<const); coverage Untested 0; ASCII only; seal saved, all hashes MATCH; ledger row added todocs/reports/t27b_expectations.json.Refs #8887