C1-A04 follow-up — Clarify symbolic-ref resolution boundary - #35
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📝 WalkthroughWalkthroughThe changes clarify that canonical ref validation proves string identity only. Symbolic refs, repository-specific identity, mutation targets, change-request direction, and concurrency checks remain responsibilities of the trusted execution boundary. ChangesCanonical ref identity
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: 🔵 Low · up to The PR does not change runtime behavior and is mergeable with explicit owner follow-up to rename one caption so the documentation does not imply that canonical ref names prove distinct repository branch targets. Poem
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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…rget-role C1-A04 follow-up — Make protected-parent identity role-aware
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…dentity C1-A04 follow-up — Allow identity-preserving provider resolution
…er-binding C1-A04 follow-up — Bind change requests at provider boundary
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…ording C1-A04 follow-up — Distinguish repair.push source role
C1-A04 follow-up — Bind repair.push source to authorized ref
…tract C1-A04 follow-up — Complete execution-boundary ref contract
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Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…entity C1-A04 follow-up — Compare effective refs using repository identity
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Actionable comments posted: 1
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Inline comments:
In `@src/domain/repair-job.ts`:
- Around line 793-794: Update the preceding TSDoc caption near
readCanonicalBranchRef to replace “Different branch ref” with terminology
describing different canonical ref names and arbitrary spelling normalization,
while preserving the surrounding explanation.
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docs/architecture/C1-repair-job-authority.mdsrc/domain/repair-job.ts
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| stand in for the authorized repair ref on either half. The receiving/mutation | ||
| side must fail closed if either effective half is the protected parent, is not | ||
| provably the authorized repair ref, or ceases to be between the check and the | ||
| push — the authorized source-to-destination relationship must hold through to | ||
| that consuming boundary, not only at an earlier pre-check. An ordinary |
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For a remote push, the receiving/mutation side cannot prove the source ref's effective identity or whether it changed: the sender resolves the source and transmits an update containing the old OID, new OID, and destination ref, not the source ref name. I checked Git 2.43's documented syntax, git push [<repository> [<refspec>...]], and its packet flow confirms that receive-pack receives only those destination-update fields. Requiring both halves to remain bound through the receiving boundary therefore makes a conforming remote executor impossible (or encourages a non-authoritative receiver-side re-check); require the sender to bind and consume the source while resolving the refspec, while the receiver atomically validates and mutates the destination.
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Purpose
Second-level quarantined validation repair for the CURRENT P2 symbolic-ref
security-contract finding discovered during review of PR #21.
This PR is intentionally stacked on PR #21.
It MUST target:
repair/c1-a04-ref-aliasIt MUST NOT target:
cockpit/c1-job-authorityand MUST NOT target:
main.Finding
PR #21 correctly closes caller-controlled textual Git-ref aliasing such as:
mainheads/mainrefs/heads/mainHowever, independent verification found that C1's documentation/TSDoc could be
read as claiming something stronger: that distinct accepted canonical ref names
prove distinct repository-resolved branch targets.
That guarantee is not available to pure C1 because C1 performs no repository,
filesystem, Git, subprocess, or symbolic-ref lookup.
A canonical-looking ref such as:
refs/heads/repairmay depend on live repository state and may itself be symbolic to another ref.
Classification:
CURRENT / P2
Repair
This patch narrows the security contract only.
It clarifies that C1 proves structural canonical ref-name validity and closes
caller-controlled textual aliasing, but does not prove:
A later trusted repository/Git execution boundary must resolve or reject
repository-dependent ref targets before exercising ref-mutating authority
represented by an
ExecutionPermit, and must fail closed if the repair refresolves/dereferences to the protected parent or safe target identity cannot be
established.
No runtime behavior is changed.
src/domain/repair-job.tschanges are comments/TSDoc only.Validation
Independent validation:
PASS
Validated commit:
c743b65217cee372ba259cd4a1890469d529eed9Validated parent:
52f1a79a98520d5a3dc2eb2ce8a662ea36cc6a56Validated binary patch SHA-256:
E426C903BD07A7D1C95F563FEC2A5F5AF7820EDFCC1CE8E582729445412E7E43Validated patch bytes:
20130Changed files exactly:
docs/architecture/C1-repair-job-authority.mdsrc/domain/repair-job.tsIndependent validator additionally proved that the TypeScript token stream was
unchanged after comment trivia was excluded, so there is no executable/runtime
semantic change.
Validation results:
git diff --check— PASSnpm audit— 0 vulnerabilitiesPreserved boundaries
Quarantine
Required flow:
this PR
→ exact-head CI
→ independent GitHub reviews
→ classify every finding
→ policy/evidence gate
→ Ready
→ post-Ready observation
→ human CREATE A MERGE COMMIT upward into PR #21 branch
→ establish PR #21 NEW HEAD
→ fresh PR #21 audit
FAIL means this child is rejected/quarantined and PR #21 remains untouched.
MERGE IS OPERATOR-ONLY.
No AI may merge this PR or enable auto-merge.
Maximum autonomous state:
READY_FOR_MERGE
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