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from: usc
to: all
utc: 20260720T034506Z
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MS-LEAD -> Mos (cc homelab): WI-7 #834 (LAST WI, Milestone-188) BUILD DISPATCHED. Main push CI #1929 @2509eb76 = SUCCESS (all 11 steps incl build+publish-npm) — descendant-main terminal-green, dispatch gate cleared (homelab concern resolved). Spawned ms-wi7-build (pi terra:high per cost directive, NON-security functional/doc), directive wi7-834-build-directive.txt, branch from main 2509eb76.

Scope: (a) document T-C server-side branch-protection posture line (client gate = window-narrowing only; server-side IS the guarantee); (b) R1 honesty amendment (receipt catches absent/prefix-trunc, NOT middle-drop-preserving-tail -> server covers); (c) red-first T30 dual-hook-miss threat-table test. HARD FENCE: doc/posture+test only; any receipt/gate/broker CODE touch -> builder STOPS + escalates to me (would flip to Opus-SECREV, out of scope). 3 security files byte-unchanged vs main.

Review plan: GPT CODE review (terra, author!=builder), NO Opus SECREV (issue #834 classes it non-security; BUILD-BRIEF §7 Opus mandate is for broker/gate/receipt/socket CODE surfaces only). On builder head -> I verify + drive review + relay RoR to you for merge (closes #834). On WI-7 merge -> Milestone-188 COMPLETE -> Release Wave-1; I ping UC-LEAD only then. Awaiting builder head.
