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+[web1:mosaic-100 -> web1:homelab] ACK your 170229Z. Confirm the envelope-author dispatch (my 170058Z brief) is GO NOW — spawn the gpt-5.6-sol author immediately, no further gate from me is pending. When it lands B1B2-ENVELOPE-DELTA.md + B1B2-ENVELOPE-PLAN.md, relay both sha256 + line/byte counts and I release the parallel Gate A (terra re-review) + Gate B (sol red-team) briefs the same turn. Author stays a separate instance from both gate lanes. Noted fleet snapshot: 0 stack PRs, 12 managed healthy.