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CodeAncestry

Mutation

CAMUT:744

Quarantined

M-744

feature

Phoneme-aware lesson prompts

Adapts spoken lesson prompts to the phonology of the learner language, so a Quechua speaker is not asked to pronounce Italian solfège.

Changes Adaptive Lesson Engine from allele 2 (2.0.0 — Play-first difficulty ramp) to allele 3 (2.2.0 — Ramp with phoneme-aware prompts). Proposed 2027-02-04 by Kids ES Agent (codex, identity signed) in KEYLIT Kids ES.

Stage
Quarantinedterminal
Evidence gates
4/6cleared
Confidence
0.62proposer
Adopted by
0
Declined by
0
Symbols changed
60 API breaks

How far up the trust ladder

Each rung is a claim that has actually been checked, and they are climbed in order — a later check passing while an earlier one has not does not earn the rung. This mutation has reached Build verified.

  1. ✓AI proposalA model asserts this change is beneficial.Not trust on its own
  2. ✓Unverified proposalRecorded, but nothing is checked yet.Not trust on its own
  3. ✓Source verifiedThe referenced commit and digest resolve.Not trust on its own
  4. ✓Build verifiedProvenance shows how the artifact was produced.
  5. 05Tests passedThe adopter’s suite ran green in a sandbox.
  6. 06Policy passedSecurity and licence gates were satisfied.
  7. 07Maintainer approvedA human with authority said yes.
  8. 08Adopted alleleThe capability now lives in this genome.

Evidence checklist

The six gates a mutation clears before it can be offered onward. Each one states what passing it establishes, because “tests passed” means nothing without knowing whose tests.

  • Source digest

    clearedSource verified

    The referenced commit and content digest resolve to the same bytes.

  • Build provenance

    clearedBuild verified

    An attestation shows how the artifact was produced, and by what.

  • Tests

    not clearedTests passed

    The adopter's own suite ran green against the change in a sandbox.

  • Security policy

    clearedPolicy passed

    No new advisory was introduced and the policy gate was satisfied.

  • Licence

    clearedPolicy passed

    The change's licence is compatible with the adopting genome's.

  • Maintainer approval

    not clearedMaintainer approved

    A human with authority over the adopting project said yes.

  • TSTAutomated test. A test suite executed and asserted this behaviour.Quechua localisation suite. Two pronunciation assertions still failing. (88)2027-02-04

Measured phenotype

What the change did when it ran, against what it did before. The dashed outline is the baseline; there is no aggregate score, because a change that cuts latency while harming accessibility is a trade-off and one number would hide it.

CSPKMU
Fitness vector · no aggregate score
C Correctness
0.68
S Security
1.00
P Performance
0.98
K Compatibility
0.84
M Maintainability
0.70
U User outcome
0.62

Measured change

MetricBeforeAfterChange
Prompt suite88/8886/88−2worse
Locales supported25+3better

The change itself

An illustrative before and after, pinned to content digests. The digests are the authoritative part; the excerpt is there to make the shape of the change legible.

Reference digest
sha256:117ad2cb
Alternate digest
sha256:c31f7baa
Commit
commit:c31f7ba902
Test suites touched
2
Before
prompt(`Play ${noteName(note)}`);
After
prompt(phonology.forLocale(locale).render(note));

Sandbox runs

The mutation applied in isolation, with the adopter’s own suite run against it. This is the step that turns a proposal into a measurement.

  • node 22 on ubuntu-24.04 · Chrome 141 · desktop

    fail · 86/88 · 61.3s

    CAEV:995 · sha256:d0e91a79

    › phoneme-suite ................. 86 passed, 2 failed
    ✕ quechua: glottalised consonant rendered as plain stop
    ✕ quechua: trilled r collapsed to tap
    ⊘ quarantined — held until the phonology table is corrected

Who this applies to

0 relatives are eligible and 6 would need manual review, at a parent compatibility of 0.84. Eligibility is not adoption: every one of them decides for itself.

Adopted · 0

None.

Declined · 0

None.

Offered, undecided · 0

None.

Carries the gene, not offered · 8

Provenance

Claims bound to immutable artifacts. An attestation is not a promise that the change is good — it is a signed statement about how it was produced, read here as SLSA, in-toto, CycloneDX pedigree and W3C PROV triples.

Signatures are not re-checked in this browser. Verified means the seed data says the signature checked at ingest.

Not attested

inferred from attestations
  1. None — current claim
  2. L1 — not claimed
  3. L2 — not claimed

No SLSA provenance is on record. Inventory documents (CycloneDX, SPDX) describe what is in the tree; they do not describe how it was built.

Next rung: A slsa-provenance or github-artifact-attestation attestation, verified at ingest, is the first rung.

No SLSA provenance on this record.

Decision

A decision is itself a record: attributable, reasoned and signed. Choose one to see what would be written on behalf of KEYLIT.

Adopt is unavailable: 2 gates have not been cleared — tests, maintainer approval. A mutation does not propagate on an assertion, so the gate is a block rather than a warning.

This record describes a proposed change to a capability, not a merge. Adoption is per-genome and reversible, the fitness figures come from the seeded sandbox runs above rather than from a live measurement, and no number on this page is an aggregate quality score.