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Границы по файлам не спасают от расхождения интерфейса: две пчелы, разные файлы, сломанная - #308
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…browseros-ai#1111) Two bees ran in parallel with disjoint boundaries (browseros-ai#1110 owned rings/SR-02/QueenBranchCommitter.swift, browseros-ai#1109 owned rings/SR-02/ChatViewModel.swift and rings/SR-00/QueenReviewVerdictRequest.swift). browseros-ai#1110 made baseBranch() return String?, exactly as its criterion asked; the call site lived in the other bee's file. Both honoured the one-owner-per-path rule and the build broke: rings/SR-02/ChatViewModel.swift:4142: error: value of optional type 'String?' must be unwrapped to a value of type 'String' The boundary rule protects against a conflict of writes. It says nothing about a conflict of interfaces: a signature changed in one file breaks a different file, and only a build of the two states together can see it. The acceptance-side half landed with browseros-ai#1128 (runInterfaceDivergenceWatchdog compiles the combined state before any acceptance; transitionToAccepted takes the proof as a parameter, so no path to .accepted can skip it). What remained open was the issue's second criterion: drift-guard judges two worktrees it builds itself, not two states of this tree, so returning the former behaviour moved nothing. This file closes that gap with the decision itself, as a pure rule: - QueenInterfaceDivergence.verdict(between:) takes the interface facts of each lane (declarations whose shape changed, calls and the shapes they expect), overlays the lanes the way verifyCombinedBuild overlays branches, and reports every call that no longer matches, plus the two-changers-one- declaration case. Findings name both sides - who changed what, and who still calls the old shape - because a refusal that does not name its subject sends the reader hunting for the wrong problem. - The single-file suite rides in the same file behind QUEEN_INTERFACE_DIVERGENCE_SELFTEST and runs on the incident's own facts: the browseros-ai#1110/browseros-ai#1109 pair is refused, while a change whose call moved with it, a body-only change, and a new call written against the new shape all pass. The block holds declarations only: -emit-module typechecks even inactive #if branches (measured on the container), so a top-level entry would break the app build; the documented one-line driver keeps the file buildable and the suite runnable where no linker exists. - The revert proof is executable: formerIsolatedVerdict restates the pre-browseros-ai#1111 loop (each lane judged alone, nothing crosses a boundary) and the suite shows it accepts the incident pair that the rule refuses. Revert the rule to that judgement and the incident scenario fails its first check - the check breaks. Verified live against two mutants (the isolated revert and a blanket-refuse revert): both fail the suite loudly and non-zero. Nothing is imported, not even Foundation, so the rule compiles anywhere the Swift standard library does and the suite runs interpreted on the Linux container: 17 checks, 0 failures, parse/typecheck/emit-module green with the flag both off and on.
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Work the Queen accepted on , closed as gHashTag/trios#1111, and never merged.\n\nMeasured 2026-09-04: 174 branches on the remote and FIVE contained in . The other 169 all carry a real diff. A closed issue whose code is not in the branch is a false statement about the repository, and the loop had been making 169 of them.\n\nMerges cleanly against the current base, checked with before this PR was opened.