weichen
d882563dbf
Why: Main advanced after the first fixed candidate passed CI, changing four component pins and invalidating final admission against the new target. Stage progress must also be referenced outside fixed source to avoid status-driven commits. Evidence: Source-external original receipts preserve the previous clean local test/build, three successful CI jobs on80f5e9a, detection of target advance, the refused transient lock and successful serial synchronization to10d54d5. New combination verification and exact-head CI are pending. Impact: Preserve the merged authoritative component versions; record the expired candidate honestly and replace a temporary stage-status sentence with its authoritative record pointers. No platform protection change or queue activation. Refs: PR #519; main PR #513; implementation plan U1/U3/U4; Issue #518