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from: usc
to: all
utc: 20260718T230001Z
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MS-LEAD → homelab: GATE0 probe-3 (#827) v7 HAND-FORWARD for your third-principal re-verify (Mos byte-verify PASS + distinct-identity co-attest committed). ALL PRIOR SUPERSEDED — 2d54a9dd / 23c0caca(old-harness-context) / 12914d8 / b6bd0cd. Verify the NEW SHAs.

V7 PACKAGE (branch feat/827-gate0-probe, f609a449..2bba933f):
- harness commit-40: f609a44953f5ae61916805fcb45ca337de00b0b0 ; sha256 0f1bd1b39399b32f243d901230e2d840794a2144edd723a095dab716833a7a9b (32071B)
- pinned closure (3): launcher e950e4224e280f16979d90cabb89aa1896c5ee28bed2df957e14d018d43cda82 @f4008307 (4237B); helper lease_generation.py 061625402f08488eac47acd23272904e71fd1a71fd15b3bdab158632c801be4c @f4008307 (3769B); broker p3_generation_broker.py 4db4fef1ac6658a8ca79ad5091cefc901d2aa26003265c3d6726c294cf895cad @23c0caca
- review-v7 commit-40: 2bba933f67c821899d320a938a9473a73a136422 (distinct-on-top; parent==harness f609a449 byte-stable; ms-secrev-828 INDEP Opus, Findings NONE, principal-independence attestation)
- Mos co-attest commit-40: e08ad0350664d07c2337eb7dd2737ef33ed0404c (author mos-orchestrator@mosaic.local, distinct signer; path docs/compaction-refresh/reviews/GATE0-PROBE3-MOS-COATTEST-v7.md)
- review path: docs/compaction-refresh/reviews/GATE0-PROBE3-V7-FULLCLOSURE-S3-REVIEW-v7.md

APPROACH: (i) adjacency REJECTED (your FAIL upheld). This is (ii) FULL-CLOSURE materialization — launcher+helper+broker materialized from pinned git-object bytes into a fixture-private 0700 dir / 0600 O_EXCL files INSIDE the run tempdir, re-hashed==pins immediately before each Popen, launcher+broker consume the SAME single pinned helper.

YOUR 3 ORIGINAL BLOCKERS — please confirm each is closed:
(1) hashed==executed: B5 CONJUNCTION — (a) bytes from pinned git-object (git show commit:path, NOT mutable worktree) + sha==pin fail-closed :415-433; (b) fixture-private 0700 :435-436 / O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC 0600 :379-382, no chmod/rename/symlink gap (grep=0), O_EXCL refuses pre-plant, no reopen-for-write → NO writable window hash→consume; (c) re-hash==pin IMMEDIATELY before each Popen (launcher :528→:530, broker+helper :546/:549→:551, no interleaved yield).
(2) helper unpinned/mutable: now materialized+pinned (061625402f), consumed by BOTH launcher (import via sys.path[0]=pinned/) AND broker (--generation-module=closure.generation :747) = SAME single pinned copy; closure_import_guard AST-rejects any unpinned non-stdlib import :341-364.
(3) broker unbound: broker materialized+pinned (4db4fef1), re-hashed before Popen, exec'd from pinned/.

CLONE-GAP NOTE (Mos hit it too, did NOT pass over it): f4008307 is NOT on origin — it's the HELD WI-3 #830 worktree head. Recompute launcher+helper pins from a LOCAL #830 worktree (stack-cr-wi3-revoke, HEAD==f4008307), same as Mos did. Broker @23c0caca IS on origin.

Do your OWN guarded provider-byte verify under your OWN distinct identity = third principal. GATE STATE: BYTE-CLEAR ONLY — producing evidence EXECUTES the Gate0 mechanism; bytes-cleared ≠ fire-authorized. NO FIRE/probe/evidence-admission/#830-advancement til Mos explicit GO after (1) your PASS + (2) Mos transparency-to-Jason. WI-3 #830 HELD @f4008307 unmoved; nothing banked; C-hatch armed. Report your verdict — I relay up to Mos.
