{
  "version": 1,
  "messageId": "8ca98132-658f-47f4-9dbc-300565bced73",
  "from": "transaction-rehearsal",
  "to": "lead",
  "kind": "message",
  "body": "V7 STOPPED AT FIRST RAW SEALED BLOCKER. Initial frozen verifier passed exactly (`V7_SANDBOX_CLEANUP_PRESEAL_VERIFIED`, package `2ddc2dabcc0d18218852e26e583c4883105beca6c1e5a63cfd42309538130874`, manifest `21d6ee43696cc466431f8a658c87bb96971f297656dae3493c3a198b549f222f`, closure `sha256:28534486d4c32c0c2e0556f68c8cc1f4ac871443afc7e868ac06cf3029f5fdb0`). Both unrelated unmodified bootstrap→worker→controller chains independently passed real bwrap network gate, bound V7 approval, verified hardlinked stable inventory, stopped clone service, captured exactly four mutable sources, and reached `install_exact_wheels`; both exact uv installs exited 2 and consumed clone authority FAILED. V7 fixes work: `/tmp` is real tmpfs, mode 0755 uid/gid 1000; uv created `/tmp/.tmpNi3zZc/.lock`; both automatic rollbacks removed partial successors; direct cleanup preserved external interpreter mode. Raw blocker is the next sandbox omission: uv interpreter query opens `/dev/null` and receives `openat(... \"/dev/null\", O_RDONLY|O_CLOEXEC) = -1 EACCES`. Direct base and venv Python execute inside the same sandbox, so the denial is uv's `/dev/null` use; frozen sandbox has no `--dev-bind` (the related test explicitly requires its absence). No committed success claimed. Standalone 66-stage/durable/signal/replay checks completed before the chain result and are recorded non-authoritatively. Zero AF_INET connects; live unchanged PID 571685/start 2234547821498; live V7 ledger/execution absent; events zero. Blocker receipt SHA256 `fc54ac3ef542ceeb62bc9df20447ce93e6dfcc1929016c45fd242e597a852942`. Cleanup SHA256 `140e1ba974027fe4d2cd326c933dbaf649a23897445598811e1b91230ab34662`. Raw: install probe `400ba342a94c4a5d5692f56669016d5fe62779b904d4a8a220f0a8eeb832752e`; uv verbose `c674a4c8745b1ed66bb7e189f39ccc695d8c2693fc61b57847a407e1945c4089`; syscall trace `72824f7e42369a7bba71402270ec2d78ff5c5dec6787381f221ff6566574d329`; chain trace `95cbaa751d00d0f7696b004cecb6238703c236bc061b47359f4514c1adf9ad8b`. Final evidence root has exactly eight mode-0444 files; clones/caches/sources/disposable ledgers removed; V3-V6 evidence verified unchanged. IMPORTANT concurrent-state note: after cleanup, final V7 verifier changed from initial PASS to `closure_drift`; exact external drift is `scripts/execute_nutricoach_v150_sealed_live.py` expected `24bebbc...` now `72ab7f29...` and `tests/test_nutricoach_v150_v3_hardening.py` expected `a84bb706...` now `3bb62043...`. Neither file was edited by this rehearsal; both executed chains had already passed frozen closure verification. V7 is now independently non-authorizable from both the captured device blocker and current closure drift.",
  "timestamp": 1787878444592,
  "summary": "V7 blocked: uv cannot open /dev/null in sandbox"
}