I read this as full Todo 8 execution - I’ll first reconstruct the approved plan and immutable receipts, prove every derived r71 root is absent, then perform the TDD generation advance, reproducible builds, adversarial rehearsals, sealing, verification, evidence, and cleanup without touching forbidden authorities or live state.


I’ve completed the plan/receipt reconstruction and found no existing r71 migration path in the initial broad inventory. I’m now pinning the exact r71 root set and source overlay from current receipt hashes before any write; the existing r70 candidate and authority registry are being used only as immutable format/state references.


The RED gate failed for the intended reasons: launcher/bootstrap still target r70 and five required stepper sources are absent from the overlay contract. I’m advancing the sealed generation and adding source/wheel closure now; no candidate, preseal, authority, execution, observer, or live-profile path has been created.


The two clean-input builds are byte-identical (`Hermes 17d5…2829`, `profile 2f1c…9c4f`), with ZIP CRC, all 1,045/123 RECORD rows, metadata, and all seven Todo1-7 wheel members verified in both builds. Both pre-seal fault rehearsals rejected as required and left every r71 preseal/authority/execution/observer root absent; I’m sealing the sole immutable candidate now.


The sole r71 candidate was sealed, but its mandatory verifier correctly rejected it: Todo 5 changed `tests/gateway/test_nutrition_coaching.py`, which is inherited through the immutable v17 patch tree yet was absent from the successor overlay. Because the now-occupied r71 candidate root is immutable and the task forbids deleting, mutating, or reusing an r71 candidate root, this is a generation-fatal blocker; I’m preserving the failed artifact for audit and cleaning all disposable build/input roots without creating any preseal or authority.


I read this as Todo 8 completion - execution reached an immutable generation blocker, so I’m returning the exact failure rather than a false DoneClaim.

**BLOCKED:** The sole immutable `task-v15r71-candidate` failed verification:

```text
NUTRICOACH_V150_CANDIDATE_FAIL:qualified v17 overlay mismatch:
tests/gateway/test_nutrition_coaching.py
```

Todo 5 changed that inherited v17 patch-tree file, but it was omitted from the sealed overlay. The r71 root is now occupied and immutable; policy forbids deleting, modifying, or reusing it.

- Candidate digest: `aa377308a8967fb8e2557f5283b1c67e5fec0ad2410ce2bee3b4835888cae14f`
- Twin wheels were byte-identical; CRC, RECORD, metadata, and seven source bindings passed.
- Both adversarial faults were rejected.
- No r71 preseal, preflight, authorization, execution, runtime, or observer root exists.
- No network, service/live-profile, customer-message, customer-update, or Git effect occurred.
- Build, input, fault, and temporary roots were removed.
- Blocker evidence: `.omo/evidence/nutricoach-telegram-checkin-stepper/task-8-r71-candidate.json`
- Evidence SHA-256: `e616f00bb06350582e86172212dc89ca6a39e079aaa91aba0eec234bf7bd33b4`

No DoneClaim issued.


I read this as an approved same-generation recovery - I’ll first validate the recovery policy, r2 root absence, and the failed tombstone’s exact immutable identity, then add the fail-closed sealer regression, rebuild and adversarially qualify fresh artifacts, seal only `task-v15r71-candidate-r2`, verify it, amend evidence, and clean all disposable roots.


The recovery RED reproduced the unsafe behavior: the existing sealer deleted the occupied sentinel before failing on another input. The hardened sealer now raises `successor_exists` before any chmod/read/delete, and the focused r71/overlay/occupied-root gate is green (`11 passed`). I’m starting the fresh post-fix A/B builds from normalized clean copies.


The fresh A/B wheel pairs are again byte-identical with all RECORD rows and all 44 wheel-bound overlay members verified in both builds. Positive candidate-input closure passed across 349 source entries; occupied-root, mutated-member, and omitted `test_nutrition_coaching.py` rehearsals all rejected without r71 effect roots. I’m performing the single r2 seal invocation and independent verifier now.


The r2 artifact itself is valid and immutable: candidate verifier and input closure passed, digest `54550d75…ab37e`, with the failed tombstone and authority registry unchanged. A final strict diagnostic gate exposed three closure-test typing errors (two inherited from attempt 1’s overlay test plus one in the new sealer test); fixing them now would change source already bound into immutable r2 and invalidate the verified candidate. Under the fail-if-present policy, r2 cannot be resealed or mutated, so I’m cleaning disposable roots and recording the exact post-verification blocker rather than issuing a false DoneClaim.


I read this as r71 recovery completion - r2 artifact verification passed, but the strict diagnostics gate blocks a truthful DoneClaim.

**BLOCKED: `R71-R2-POSTSEAL-STRICT-DIAGNOSTICS`**

`task-v15r71-candidate-r2` is immutable and passed:

```text
NUTRICOACH_V150_CANDIDATE_PASS
```

Candidate digest:

```text
54550d75a31055f40a293d444a17fdd463ace784ca16e0cb0137cd695f7ab37e
```

However, post-seal basedpyright found three errors in the candidate-bound closure test:

- Private `_SUCCESSOR_OVERLAY_PATHS` import
- Invariant `list[dict[str, str]]` argument mismatch
- Unused `seal_candidate()` return value

Fixing these now would invalidate r2 source binding, while fail-if-present policy prohibits mutating or resealing r2. A further unique root requires a new approved recovery decision.

Cleanup completed; both immutable candidates remain, all disposable roots are removed, and no preseal/authority/execution/runtime/observer or forbidden effects occurred.

Amended evidence:

```text
.omo/evidence/nutricoach-telegram-checkin-stepper/task-8-r71-candidate.json
SHA-256: e09584feb8a8fb6b16f352155012ef9d45b6ab859e1ddac31c0e16248ce7daa9
```

No DoneClaim issued.


I read this as a source-freeze-only repair - I’ll prove every r3/effect root remains absent, capture the three strict RED diagnostics, make only the typed closure/configuration edits, validate current source plus immutable r2 independently, record frozen hashes and gates, and stop without building or sealing anything.


The minimal source edits are in place: overlay paths are now a public immutable `Final[frozenset]`, verifier input accepts covariant `Sequence[Mapping[…]]`, the sealer result is consumed, and closure defaults to r3 while honoring a typed environment-selected immutable fixture. I’m running the complete strict GREEN matrix with r2 injected only as the pre-seal fixture.


The final GREEN gates are clean: basedpyright `0 errors`, ty/Ruff/compile pass, focused closure/sealer suite `19 passed`, and the immutable r2 verifier still prints the exact PASS sentinel when executed from its sealed source snapshot. I’m performing the final all-file LSP, stale-reference classification, immutable-tree/absence checks, and source-freeze evidence write; no r3 artifact root has been created.


I read this as source-freeze completion - all requested source-only gates passed without creating r3 artifacts.

**SOURCE_FREEZE_PASS**

- basedpyright: `0 errors, 0 warnings`
- ty, Ruff, compile, and all-file LSP: PASS
- Focused closure/sealer tests: `19 passed`
- Immutable r2 verifier: `NUTRICOACH_V150_CANDIDATE_PASS`
- r1/r2 tree digests and modes unchanged
- r3 candidate/build/input/receipt roots absent
- All r71 effect roots absent
- No Git, network, service, live-profile, customer, build, or seal actions

Evidence:

```text
.omo/evidence/nutricoach-telegram-checkin-stepper/task-8-r71-r3-source-freeze.json
SHA-256: 11764129c39dda4549c889fd39c2b5910dced7629461f69b72a9672a19ed3558
```

The source freeze is typed, single-purpose, and free of escape hatches or assertion weakening.


I read this as the single authorized authoritative r3 seal - I’ll bind the frozen ten-file source and preseal verification first, prove all one-use and effect roots absent, rebuild exact deterministic A/B artifacts, run input and fault gates, seal r3 once, independently reverify every frozen gate, amend final evidence, clean disposable roots, and issue DoneClaim only on complete PASS.


The authorization fence is clean: all ten hashes match the independent preseal receipt, r3 and all effect roots are absent, and r1/r2 remain immutable at their recorded tree digests. The exact authorized authority receipt is present in immutable r2 with SHA-256 `6e945816…c7610`; I’m now reproducing its approved full clean-copy A/B packaging contract.


The authoritative packaging and input gates match the independent preseal qualification exactly, and the one permitted seal produced the expected r3 digest `a41c97c8…e9be`. No source changed. I’m now running the post-seal candidate sentinel, ten-file strict matrix, 19-test closure, complete source/wheel binding, registry exclusion, and final cleanup checks.


All authoritative post-seal gates are PASS: r3 candidate/source/47-path overlay/four wheels bind current frozen source, strict diagnostics and 19 tests are clean, r1/r2 remain unchanged and excluded, all three candidate digests are absent from authority, and no preseal/effect root exists. I’m removing disposable packaging roots and finalizing the Todo 8 evidence with r3 as the sole Todo 9 selection.


I read this as authoritative r3 sealing - every gate passed and cleanup is complete.

**DoneClaim: Todo 8 PASS**

- Candidate: `task-v15r71-candidate-r3`
- Digest: `a41c97c8a467b0308b9f50ac072cc3adae1c2d47ca515b76f123e7c1debee9be`
- Verifier: `NUTRICOACH_V150_CANDIDATE_PASS`
- Strict diagnostics: 0 errors
- Closure tests: 19 passed
- A/B wheels: byte-identical; CRC, RECORD, and overlay parity PASS
- r1/r2: immutable, unchanged, excluded
- r3: sole Todo 9 selection
- No preseal/effect roots or forbidden actions
- Disposable roots and bytecode removed

Final evidence:

```text
.omo/evidence/nutricoach-telegram-checkin-stepper/task-8-r71-candidate.json
SHA-256: 8d123750a420101e0afe879febdcc902f1e38fb88ab5ba4e456dc04167b2a4c9
```