[Air000000]

Outcome

Executed the explicitly authorized merged PR77 protocol: exactly60 Singapore qwen3.5-plus-2026-04-20 calls, 30 per fresh concurrent arm, fixed30 questions/full ordered Top14. Estimated accounting cost CNY1.917294 (<CNY8), not an invoice. Two initial calls plus58 resumed calls, no repeat/retry/recharge, provider/usage/schema failures, DEV, retrieval, relabeling or serving changes.

Frozen AI-proxy outcome	v5.2.1	v5.3
Binary agreement, failures included	22/25	23/25
Sufficient targets refused	2/21	1/21
Insufficient targets admitted	1/4	1/4
All-case failures	0/30	0/30
Ambiguous admissions/refusals	3/2	3/2

Two proxy refusals corrected, one new proxy refusal: netone. The SAME insufficient admission remains; no demonstrated incident-applicability benefit. Common-valid binary25: both agree21, baseline only1, candidate only2, neither1. Dropping either known near-duplicate separately:21/24 vs22/24. Historical v5.2.1 was21/25; one refusal did not recur in this fresh22/25 baseline, so comparing candidate to the old score would overstate gain. Some proxy-agreeing reasoning still extrapolates across products without an established applicability bridge; decision agreement is not a semantic oracle.

Interpretation

Observed development regression: these questions/predictions/targeted evidence already informed v5.3. Frozen labels21S/4I/5AMB are AI proxy, not independent expert gold. Original minimum-five/class rule remains unmet/unchanged. No formal pass gate, representative accuracy, IID significance, unseen validation, answer-quality or production-promotion claim. New disagreement reflects scope interpretation of locating a bulletin versus reproducing its technical details; no post-result label repair.

Implementation

Thin runner132lines adapts the existing isolated durable engine and reuses population metrics; no new client/checkpoint framework/dependencies. Source/protocol/request/input/target/contract hashes pinned. Raw response/usage durable before parsing, SDK retries0, unknown-charge state blocks resume, no repeated completions. Private questions/source bodies/raw responses/target rows/per-case transitions remain ignored; only contracts and aggregates are public. Candidate cost CNY0.990912 vs0.926382 (~1.070x), median provider latency12.28s vs11.81s (~1.040x).

Verification

• 313 offline tests with external-network guard and temporary DB passed.
• Ruff, in-memory Python compilation and staged diff checks passed.
• Completed replay adds zero calls; no pending/lock/staged response remains.
• All prior contract/source/request/journal and annotation hashes verified unchanged.
• Primary dirty checkout/.env/runtime data untouched. All paid authorization is exhausted; no follow-up tuning or additional calls included.