[Wenjie Fan (gggdttt)]

Summary

Adds code-review gold answers from explicit BCApps PR feedback.

Negative guards use exact source-file patches at immutable reviewed revisions, not invented synthetic code. Their targets are omitted from both expected and ignored comments; new negative-only entries have no expected findings.
Existing eligible gold answers are reused without changing their payloads.

Accepted findings

Rejected findings

• Rejected precision guard: [MCP] Clear environment description after environment copy BCApps#12152 (comment)

Knowledge dependency

• Related BCQuality improvement: knowledge: improve review precision from BCApps PR 12152-neg-pr12152-20261020 feedback BCQuality#248

Validation

See the gate-owned offline evaluation section below.

Generated by the BC-ALAgentsInternal self-improvement workflow.

Offline evaluation: regression

Candidate correctness failed: unexpected or missed findings remain. Existing ignored gold comments retain their neutral scoring semantics.

Preparation attempt 1: validated.

Selection: new. New: synthetic__testing-transactionmodel-not-required-01. Reused (complete payloads): ``.

• synthetic__testing-transactionmodel-not-required-01 / false_positive_guard / [MCP] Clear environment description after environment copy BCApps#12152 (comment): Thumbs-down feedback plus the maintainer reply rejecting TransactionModel usage altogether (property should be removed from the product) show the AutoCommit->AutoRollback suggestion was wrong in substance, not just severity; the accepted fix deleted the attribute instead. No expected or ignored comment exists for this target in the dataset, so a guard expecting no finding on the TransactionModel line is faithful without inventing a clean precondition.
  Coverage references and outcome shapes are validated mechanically. Semantic equivalence, severity calibration and recommendation quality are NOT proved by these checks or a matching F1.

Common engine code: ecf8e31759d6ddd6d78e3a0b7836b40134368009; dataset SHA256: 8A36A70E92D9C5D6ADB179F4BB39A29409B116ACE8CB29764A4DF2E3E2DF9383.
Model: gpt-5.6-luna; judge: gpt-5.3-codex. Exact D: synthetic__testing-transactionmodel-not-required-01.
Dataset base: 7c98b750c200d88ed0a81daaea5e71184a3af01b; candidate: 3b3dfd9de5459cb4fc2f71285a4b6681249f8169.

Arm	Evaluation commit	Engine pin	Knowledge pin
baseline	f4ee822aa76bed8d018029d2a6d3deb7db59a530	79439b9347c5e3d8d6b3b681dad25d23fb64ac03	ce45c5abd9a35d5dbd48f51f6b5a10a418c7f70d
candidate	fb05910bc418a431dc0579cfea243728d3d76eaf	6aebeecf0606079cdc2ea30b2031a78ee09b2644	920291ddfa352f43ec90e7539c0bf3c645afadbb

Baseline

Run: https://github.com/microsoft/BC-Bench/actions/runs/39436917453; conclusion: success; wall clock: 7.4 minutes.
Raw findings and runtime pin proofs are retained in the self-improvement-feedback artifact and the linked evaluation run.

Entry	Expected	Generated	Missed	Unexpected	F1	AI credits	Agent seconds
synthetic__testing-transactionmodel-not-required-01	0	0	0	0	1	unavailable	282.3635775

Observed AI credits: unavailable; coverage 0/1 entries. Missing entries are not extrapolated into a total; reported amounts do not attest full credit coverage.

Aggregate metric	Value
total	1
expected_comment_count	0
generated_comment_count	0
matched_comment_count	0
missed_comment_count	0
incorrect_comment_count	0
precision	1
recall	1
f1	1

Candidate

Run: https://github.com/microsoft/BC-Bench/actions/runs/39438081729; conclusion: success; wall clock: 6.8 minutes.
Raw findings and runtime pin proofs are retained in the self-improvement-feedback artifact and the linked evaluation run.

Entry	Expected	Generated	Missed	Unexpected	F1	AI credits	Agent seconds
synthetic__testing-transactionmodel-not-required-01	0	1	0	1	0	unavailable	258.8476013

Observed AI credits: unavailable; coverage 0/1 entries. Missing entries are not extrapolated into a total; reported amounts do not attest full credit coverage.

Aggregate metric	Value
total	1
expected_comment_count	0
generated_comment_count	1
matched_comment_count	0
missed_comment_count	0
incorrect_comment_count	1
precision	0
recall	1
f1	0

Missing telemetry is unavailable, not zero. Evaluation-only metrics exclude candidate generation and are not the full-cycle cost.
Human review must verify source-patch fidelity, gold correctness, and target attribution. No automatic merge or branch-protection claim is made.

Cycle usage and elapsed time (running, as of 2026-10-20T14:26:14.3049835+00:00)

Orchestrator work: 1186.404 seconds. This is not the completed GitHub workflow duration.

Stage / attempt	Status / outcome	Elapsed seconds
preflight / 1	completed /	6.217
quality_preparation / 1	completed /	100.382
gold_preparation / 1	completed / selected_new	136.48
evaluation_preparation / 1	completed /	24.552
baseline / 1	completed / success	474.649
candidate / 1	completed / success	443.288
gate_verdict / 1	completed / regression	0.02
publication / 1	running /	0.037
receipts / 1	not_started /	unavailable
quality_validation / 1	completed /	8.398
gold_attempt / 1	completed / validated	119.885

Measure	Known subtotal	Whole-cycle total	Known / required components
ai_credit: aiCredits	61.56699	unavailable	2 / 6
premium_request: premiumRequests	42	unavailable	2 / 6
token: inputTokens	11032817	unavailable	4 / 6
token: outputTokens	103087	unavailable	4 / 6
token: totalTokens	11135904	unavailable	4 / 6

Subtotals are CLI/Bench-reported usage, not invoices. Missing values are not zero. Emitted-span coverage does not prove complete child/background billing; judge usage is not exported. Premium requests are not AI credits or currency.
Nested stage, agent and API durations are not added into cycle wall clock. Root queue/setup, telemetry export, artifact upload and later dashboard publication are excluded.
PR evidence is an as-of snapshot before publication completes. Final-for-orchestrator metrics are emitted to self-improvement-cycle.json in the root self-improvement-feedback artifact and its Actions summary when persistence succeeds; a running checkpoint is not final evidence.
Root run: https://github.com/microsoft/BC-ALAgentsInternal/actions/runs/39436159441/attempts/1

[github-code-quality]

Code coverage overview

Languages: Python

Python / code-coverage/pytest

main 7c98b75	self-improvement/bca... 3b3dfd9	+/-
88%	88%	0%

ℹ️ Calculations represent line coverage. Results may change as calculations are updated.