rdmsm4x-changelog-20260914-2054-tyrell-successor-not-warranted

Completed reviewed Tyrell successor assessment: AC interruption is not a product bug; no new build warranted yet.

Tyrell successor assessment — ISSUE-20260912-01

Disposition

NO_SUCCESSOR_YET_WARRANTED_FROM_AVAILABLE_MEMORY_EVIDENCE. No new candidate, version bump, production source change, signing, notarization submission, installation, launch, gate alteration, or canary operation was performed. This is not acceptance of Build23 and does not authorize its relaunch. The environmental interruption does not itself justify a product change.

Coordinator request: source task 01a078a7-f1fc-77f1-9114-949dab68f922. Producer: codex@rdmsm4x/01a08a70. Existing isolated worktree /Users/richh/dev/_handoff/tyrell-build21-memory-20260914/apps/Tyrell, branch codex/tyrell-build21-memory-20260914. Starting HEAD9bef4bb8655554193fe5c15568d4f27353e14ed6, last production source093d653493be92aed0fb39779f52d5eaef04230b. Explicit coordinator delegation was used to transfer its stale claim before writes. Main and queued app-only Build22 were clean and unchanged (ownership-source-receipt.json).

Independently verified evidence

The incident directory is /Users/richh/dev/_handoff/tyrell-build23-memory-20260914/canary-r1-ac-loss-rollback-20260914-2033. All127 manifest entries match. MANIFEST.sha256 hash637e25d5e14c47406873dd74b0bd82372cf796df940abdf8f40bbc0db8c046e2 and recursive51e788cf82e74ca4a83fbbbd5b18d7c705b9ecd1c298068b9f57a02d397f0af5 match the coordinator packet exactly (128files,31dirs,311285748bytes,0symlinks).

The recorded212 accepted samples contain one PID26620/start/path, AC/open envelope, two healthy status planes and sixteen healthy permission probes per sample. Four inventory passes completed. Saved power evidence records battery20:33:42, independent verifier rejection20:33:47, AC20:33:52 and exact rollback completion20:33:58.958091 EDT. No live host probing was done by this assessment; rollback health remains a verified-content coordinator observation from20:35:27, not a fresh runtime claim.

The unchanged memory_gate.py loaded in memory reproduces the historical31sample/1800.305620s short receipt exactly:106.048134MiB endpoint, -2.079857MiB/min endpoint delta and -0.234698MiB/min regression slope. A negative control feeding all available post-warmup history to the six-hour duration requirement returns memory window is too short. The six-hour and24h clocks are void; no long receipt exists.

Later fixed elapsed-hour bins are diagnostic only: hour1-2 slope+0.072178MiB/min, hour2-3+0.029223, final32samples-0.028463. Last physical footprint50.329315MiB. These observations do not identify a new sustained retention defect or prove long-term stability. High startup peak or89percent allocator fragmentation alone is not a failure under the pinned policy, which makes peaks diagnostic.

Reproduce without contacting any host or writing to the frozen input: python3 -B /Users/richh/dev/_handoff/tyrell-successor-assessment-20260914/assess_recorded_run.py Output assessment.json was produced with exit0. The gate module was executed from text without importing it into the immutable directory; no bytecode was written there.

Source rationale and limits

093d653 moves SQLite notification after successful commit and uses bounded recordPersisted instead of the never-drained pending queue. A current Sources search finds the sole production activityBuffer record call at SQLiteStateStore.swift:441 uses recordPersisted. Direct actor pending writes remain available for genuinely unwritten events; discarding those would remove data rather than fix the measured persistence path.

The separate event-key collision proposal remains under /Users/richh/dev/_handoff/tyrell-allocation-attribution-20260914. It reproduces a correctness problem but its eight-run ABBA memory result is mixed: lower steady footprint and higher burst footprint. Do not bundle it as an ISSUE-20260912-01 memory cure or use it merely to obtain a new build number.

No complete Swift/release-contract rerun was needed for this unchanged-source evidence assessment. Build23's previously recorded553XCTest (2skips,0failures),666SwiftTesting (0failures),11contract suites and signed artifact receipts are historical, not newly rerun here. There is no new app/daemon/archive hash or notarization ID. Build23 artifact identities remain in its frozen-handoff/artifact-receipt.json; no identity or rollback delta is introduced by this assessment.

Next action and boundaries

Return this disposition to coordinator codex@rdmpw3275m/01a078a7. Retain ISSUE-20260912-01 open. Do not relaunch Build23, reopen the invalidated clock, weaken acceptance, change main, alter app22, or install anything. A successor producer needs a materially justified change with a red-capable reproduction and review, or an explicit coordinator resolution of the recorded fresh-artifact versus no-meaningless-bump constraint. This assessment cannot manufacture either evidence or authority.

Only assessment records and isolated worktree continuity documentation may change. Reversal requires no runtime rollback: leave the assessment unapplied and preserve the evidence. Independent review verdict and final manifest are supplied alongside this report.

Independent review

Terra/high independently returned ACCEPT — NO_SUCCESSOR_YET_WARRANTED. Review hash 95bd282f5d1d8083fece4144d612529485fce13a3ee6348379654f46a3b51a2d. It recomputed the exact short receipt and found no additional concrete retention defect in the two scoped source files. Its22200s wording refers to total runtime (600s warmup plus21600s gate), not a21600s clock extension. Review saved unchanged; see review.md and review-receipt.json. One worker completed; budget advice was proceed, exact spend not measured.

Exact changed repo files: /Users/richh/dev/_handoff/tyrell-build21-memory-20260914/apps/Tyrell/SESSION-STATE.md and /Users/richh/dev/_handoff/tyrell-build21-memory-20260914/apps/Tyrell/ISSUES.md, append-only documentation commit 42c429f78466730139b34d303ccfbf75826d053b. Other writes: assessment packet, own coordination check-in and this archive. No source/library/runtime changes. Build23 frozen packet preserved. Undo docs via a new reversal commit on the isolated branch if required; do not reset peer work. No user actions required for this assessment.