C1-RJ-F1 — isolate repair-job append descriptors by LogicDuke · Pull Request #50 · LogicDuke/agentbridge

LogicDuke · 2026-08-23T15:15:21Z

Finding

Finding: C1-RJ-F1
Subsystem: C1 — Repair Job Authority
Classification: CURRENT
Severity: P2
Disposition: REPAIR_NOW

Affected base

main SHA: 8cfe1f191699fd30226b811c4743777cc2d099fc
tree: e3b8c4716a554f055262316ce111efa70691444d

Verified impact

Totality / reliability failure on an authority path.
Fail-stop, NOT fail-open. No demonstrated authority escalation.

append<T>() handed an ordinary Object.prototype-inheriting PropertyDescriptor
literal to the captured Object.defineProperty. With Object.prototype.get
and/or .set present, ToPropertyDescriptor walks the prototype chain, observes
the inherited accessor keys beside the descriptor's own value/writable keys,
and throws TypeError: Invalid property descriptor…, breaking the module's
documented never-throws / fail-closed / total contract.

Verified reachable paths

repair-job readList valid-input path (authorizedPaths / authorizedCommandClasses).
repair-job invalidFields refusal-reporting path.
issueExecutionPermit ALLOW_ONCE consumer (imports append from repair-job.ts).

Reproduced BEFORE (throws) under: ambient get, ambient set, get+set, mid-evaluation
get, mid-evaluation set, and the execution-permit consumer. Confirmed AFTER: every
path returns normally, never throwing.

Fix

Capture Object.setPrototypeOf at module load beside the existing Object
intrinsics; give the descriptor a null prototype before the captured
Object.defineProperty consumes it.

Scope

Production scope: src/domain/repair-job.ts only.
Test scope: tests/domain/repair-job-invariants.test.ts (added), tests/domain/execution-permit.test.ts (consumer regression).

Guarantees

Exported append API preserved (name + signature unchanged).
execution-permit.ts production file unchanged — the one repair-job change closes the consumer.
Sibling descriptor-family sites (agent-invocation.ts, agent-invocation-report.ts, review-ingestion.ts) untouched — separate carried obligations.
Public API change: NONE.
Dependency change: NONE.
Authority-model change: NONE (permit identity/authority stable, no widening; out-of-scope ops still refused with null permit under poison).
Fail-before reproduced; pass-after confirmed.
Fresh independent validation: PASS.
Second-order closure: PASS.
PR Cockpit D2 — evidence freshness projection #49 remains merged/untouched. Cockpit D1/D2 untouched. PR PR 007 — Autoflow State Machine: commit-bound, pure orchestration state #9 untouched.
No Ready authority. No merge authority. Human merge authority preserved.

🤖 Generated with Claude Code

Summary by CodeRabbit

Bug Fixes
- Improved reliability when processing repair-job data in environments with modified object properties.
- Preserved array element ordering and property behavior during repair-job updates.
- Ensured execution permits continue to issue, authorize, and reject operations correctly under unusual object-property conditions.
Tests
- Added comprehensive coverage for repair-job updates and execution permits.
- Added validation for cleanup, error handling, descriptor behavior, and prototype restoration.

Finding C1-RJ-F1 (C1 Repair Job Authority, P2, REPAIR_NOW). The exported append<T>() helper handed an ordinary Object.prototype- inheriting PropertyDescriptor literal to the captured Object.defineProperty. When a hostile getter or Proxy trap installs Object.prototype.get and/or .set, ToPropertyDescriptor walks the prototype chain, observes the inherited accessor keys beside the descriptor's own value/writable keys, rejects the mixed descriptor, and throws TypeError -- breaking the module's documented never- throws / fail-closed / total contract on every append path: the validated-list path (readList over authorizedPaths / authorizedCommandClasses), the invalidFields refusal-reporting path, and the imported permit-id builder that issueExecutionPermit uses at the ALLOW_ONCE mint. This is a totality/reliability failure (fail-stop, not fail-open); no authority escalation. Capture Object.setPrototypeOf at module load beside the existing Object intrinsics and give the descriptor a null prototype before the captured Object.defineProperty consumes it. Descriptor flags, index semantics, element order, invalidFields ordering, refusal semantics, permit identity/authority, the exported append signature, and the public API are all unchanged. The single change also closes the execution-permit consumer with no edit to that file. Regression tests cover ambient get / set / get+set, mid-evaluation poison, the validated-list and invalidFields paths, direct append descriptor semantics, element ordering, realm restoration through a throwing body, and the issueExecutionPermit consumer. Sibling descriptor-family sites remain separate carried obligations. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

coderabbitai · 2026-08-23T15:15:28Z

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 007be0ae-1d40-4db8-a177-748f88e70474

📥 Commits

Reviewing files that changed from the base of the PR and between 8cfe1f1 and 9e2d4b2.

📒 Files selected for processing (3)

src/domain/repair-job.ts
tests/domain/execution-permit.test.ts
tests/domain/repair-job-invariants.test.ts

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

📝 Walkthrough

Walkthrough

The repair-job append path now avoids inherited accessor interference by using a null-prototype descriptor. Tests cover poisoned prototypes during repair-job evaluation and permit issuance, including ordering, descriptors, authorization, and cleanup.

Changes

Prototype Poisoning Hardening

Layer / File(s)	Summary
Repair-job append hardening and invariants `src/domain/repair-job.ts`, `tests/domain/repair-job-invariants.test.ts`	`append` now uses a null-prototype property descriptor. Tests verify snapshots, invalid-field ordering, element descriptors, append ordering, mid-evaluation poisoning, and exception cleanup.
Execution-permit poisoning coverage `tests/domain/execution-permit.test.ts`	Tests verify unchanged authorized permits, rejected unauthorized requests, and restoration of poisoned prototype properties.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Merge Risk: ⚪ Minimal · up to 9e2d4

This change isolates repair-job property descriptors and adds regression coverage without changing the public API or authority model; no actionable merge-blocking risk remains beyond normal checks and review.

Poem

I’m a rabbit guarding fields with care,
Null-prototype descriptors clear the air.
Poisoned getters hop away,
Permits keep their shape each day.
Tests restore the prototype there.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely identifies the main change: isolating descriptors used by repair-job append.
Docstring Coverage	✅ Passed	Docstring check was indeterminate for this PR — some files could not be analyzed in time. Not blocking.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

Create stacked PR
Commit on current branch

🧪 Generate unit tests (beta)

Create PR with unit tests
Commit unit tests in branch repair/c1-repair-job-descriptor-isolation

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LogicDuke · 2026-08-23T19:35:55Z

@codex review

LogicDuke · 2026-08-23T19:36:02Z

@coderabbitai review

coderabbitai · 2026-08-23T19:36:15Z

✅ Action performed

Review finished.

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chatgpt-codex-connector · 2026-08-23T19:37:40Z

Codex Review: Didn't find any major issues. Bravo.

Reviewed commit: 9e2d4b26fa

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LogicDuke marked this pull request as ready for review August 23, 2026 19:33

LogicDuke merged commit 50bb632 into main Aug 23, 2026
2 checks passed

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C1-RJ-F1 — isolate repair-job append descriptors - #50

C1-RJ-F1 — isolate repair-job append descriptors#50
LogicDuke merged 1 commit into
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repair/c1-repair-job-descriptor-isolation

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Verified impact

Verified reachable paths

Fix

Scope

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