[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: #12375 Make OpenEDocument method public BCApps#12418 (comment)

Knowledge dependency

• Related BCQuality improvement: knowledge: improve review precision from BCApps PR 12418-neg-pr12418-20261020 feedback BCQuality#241

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__breaking-intentional-public-widen-01. Reused (complete payloads): ``.

• synthetic__breaking-intentional-public-widen-01 / false_positive_guard / #12375 Make OpenEDocument method public BCApps#12418 (comment): The reviewer bot flagged widening OpenEDocument from internal to public as a medium-severity breaking change and received a THUMBS_DOWN plus an explicit maintainer rejection ("It is completely opposite to the request!"), because the PR's whole purpose (per its title, referencing issue #12375) was to make OpenEDocument public. The synthetic entry reuses the exact pipeline-validated source snapshot patch/repo/base_commit for this file and line, with expected_comments=[] so an agent must not raise the same internal-vs-public finding here. Limitation: this guard only covers the case where widening access is the PR's stated intentional goal; it does not generalize to unrelated or incidental access-modifier widenings, which remain coverable by other entries such as synthetic__breaking-access-modifier-01 and synthetic__breaking-scope-creep-unrelated-api-01.
  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: 035CCF13286222982DEA553D2DDA0CFAEAC3F8F556401169DD1567236A88CDD2.
Model: gpt-5.6-luna; judge: gpt-5.3-codex. Exact D: synthetic__breaking-intentional-public-widen-01.
Dataset base: 7c98b750c200d88ed0a81daaea5e71184a3af01b; candidate: d8543474d1739f5fda9c9ea13e79fbe5b2fd8931.

Arm	Evaluation commit	Engine pin	Knowledge pin
baseline	c84b1659b05517b341517c40a9d2d6eb08d63e6d	edd46ef34e9b38d7cc2fc3e1c1c806ff8e476ab6	f820aa1e8515a6483b828d9a5b1c55112461b4d9
candidate	0f60d3c1a8167c7cbe5b6740a740ec83a3bc96e6	7a0d53aa129f945696f5bd9841d7e4ac1256a05d	31b002fb20d3e0b1437ae2a6dd0217f9e7fd8cd9

Baseline

Run: https://github.com/microsoft/BC-Bench/actions/runs/39415090999; conclusion: success; wall clock: 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__breaking-intentional-public-widen-01	0	1	0	1	0	unavailable	279.9232094

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

Candidate

Run: https://github.com/microsoft/BC-Bench/actions/runs/39416101487; conclusion: success; wall clock: 6.3 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__breaking-intentional-public-widen-01	0	1	0	1	0	unavailable	248.8782851

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 2026-10-20T11:42:23.3976843+00:00)

Orchestrator work: 1174.62 seconds. This is not the completed GitHub workflow duration.

Stage / attempt	Status / outcome	Elapsed seconds
preflight / 1	completed /	7.584
quality_preparation / 1	completed /	122.306
gold_preparation / 1	completed / selected_new	125.345
evaluation_preparation / 1	completed /	27.608
baseline / 1	completed / success	507.446
candidate / 1	completed / success	383.507
gate_verdict / 1	completed / regression	0.013
publication / 1	running /	0.028
receipts / 1	not_started /	unavailable
quality_validation / 1	completed /	5.005
gold_attempt / 1	completed / validated	110.608

Measure	Known subtotal	Whole-cycle total	Known / required components
ai_credit: aiCredits	59.83954	unavailable	2 / 6
premium_request: premiumRequests	46	unavailable	2 / 6
token: inputTokens	12851843	unavailable	4 / 6
token: outputTokens	120042	unavailable	4 / 6
token: totalTokens	12971885	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/39414475364/attempts/1

[github-code-quality]

Code coverage overview

Languages: Python

Python / code-coverage/pytest

main 7c98b75	self-improvement/bca... d854347	+/-
88%	88%	0%

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