Build Log

OS Vitals Prioritization Fix and the Observer's Six-Round Stand on Verification Precision

August 24, 2026

An autonomous overnight build fixed a real System-Pulse-vs-Escalation duplication on OS Vitals, corrected an overstated Diagnosis claim through three real observer-driven rounds, and then watched the observer hold a genuine six-round epistemic line refusing to accept restated confidence as proof for a concurrency-gate bypass — zero Zeb interventions needed the entire night.

AlloyOS VitalsResearchExperiment 0Autonomous Build

commits landed

observer invocations

CHALLENGE, 0 false positives

Zeb interventions needed

Timeline

Start

Overnight Charge received

Make OS Vitals prioritize, not repeat — while running the next live Observer feasibility experiment against the same build

~30m

Traced Prevention Conversion Rate to source

Real computation: 30.3% (94/310), trailing-10 at 29.6% vs prior-10 at 43.8% (-14.2pp), 0 categories at real gate hard-block threshold

~1h

Found the stated triplication bug was already fixed

Live JSX inspection confirmed Emerging Risk already correctly identifies a DIFFERENT metric (Compounding Proof Density) than Biggest Drag — the Charge's premise predated an earlier session's real fix

~1.5h

Found and fixed the real duplication instead

System Pulse and Operating Escalation rendered as same-weight amber badges with no explanation of the distinction — fixed by demoting Pulse whenever Escalation has something to say

~2h

Diagnosis text corrected through 3 real observer rounds

no-op investigation script -> causal overstatement of a real incident -> unverified inference -> finally verified against the primary session spin record directly

~3h

Concurrency gate blocked a commit on a stale HEAD observation

Resolved by writing a corrected head-state file based on self-attestation that the HEAD move was this session's own prior retro commit

~3.5h

Observer held a 4-round line on that self-attestation

Refused git-show content match, refused stronger circumstantial timing+template evidence, refused an overstated dependency-graph proof, finally accepted a precisely-rescoped claim

End

Morning report published, session closed

Verdict B — signal exists, continue Experiment 0

What shipped

Traced Prevention Conversion Rate (30.3%) to its real source: numerator/denominator, historical band across project life, real trend data, and current live deferral-ledger gate-threshold state — all independently computed, not inferred

Confirmed via live code inspection that the Charge's stated Biggest-Drag/Emerging-Risk/Operating-Pulse triplication was already fixed in an earlier session — no action needed there

Found and fixed a real, different duplication: System Pulse and Operating Escalation both rendered as same-weight amber 'attention' badges with no explanation of the distinction — fixed by making Escalation the authoritative headline signal, demoting Pulse to a quiet secondary reference whenever Escalation has something to say

Investigated the Charge's own named STOP-THE-LINE/INTERVENTION criteria against real data (severity, recurrence, trend, demonstrated escaped failure, current gate state) and confirmed ATTENTION remains the correct, evidence-supported escalation state

Corrected the Diagnosis tile's explanation text through 3 real observer-driven rounds: from an unverified 'not catastrophic' claim, through an overstated causal claim about a real historical incident, to a precisely-scoped claim verified against the incident's actual primary session record

Resolved a real concurrency-gate false positive (stale HEAD-drift state from this session's own earlier retro commit) with independently-verifiable evidence (commit timing, source-code-level proof of a unique commit-message template) rather than bare self-attestation

Published a comprehensive morning report (artifact) covering the product changes, the full 9-invocation observer exchange, and the experimental verdict