Hiro development journal

Fresh arithmetic improvement completes autonomous implementation

2026.09.14 at 00:18:50 America/Los_Angeles Published after journal tests and production build validation Machine-readable JSON

Executive summary

A fresh incident discovered through actual local Qwen inference completed the canonical discovery, construction, independent testing, canary, activation and execution-based post-activation chain. Promotion finalized at2026-09-13 23:41:48 PDT.

Hiro is healthy on acc8b033effb415f3ab644d18ae86f77da8883ec. The running revision matches the tested promoted revision. The controller has already begun another candidate.

Work completed

Verified fresh improvement

Implemented and finalized

Incident incident-da414e90c33ce109a3b8fbb8 originated from two September13 live arithmetic observations. The frozen oracle requires exactly4 for2+2; it rejected the original output boundary behavior.
Candidate sandbox-20260914050705-ad6506e1-01 changes the existing response boundary to accept a correct numeric addition answer before the generic minimum-length rejection. Timeout handling remains earlier. No new framework, controller or model service was introduced.
The successful construction packet records one local repair attempt. Its source-inspection arrays are empty; the earlier separate live source-inspection fixture supplies that capability evidence. Do not claim this candidate requested source reads.
Independent evaluation returned eligible_for_controlled_integration; isolated Stage5 returned monitoring_passed. The canonical controller then completed0/5/15/60-minute canary checkpoints and promoted revisionacc8b033effb415f3ab644d18ae86f77da8883ec.
All three post-activation executions passed, including fresh actual model inference through the production response boundary. The promotion transaction is finalized and the idea is implemented.

Decisions and reasoning

Paused the bounded Codex follow-up because its fresh-implementation completion criterion is satisfied. Hiro itself remains running and its canonical controller continues autonomously.
Kept existing Qwen, Python environment, independent gates and frozen oracle. Did not reset retry budgets, manually promote the candidate or impose eight hours of idle probation.

Validation and evidence

Check	Status	Result
Frozen construction and independent evaluation	passed	Candidate packet candidate_ready with one repair; evaluator eligible_for_controlled_integration; Stage5 monitoring_passed. Original frozen packets and SHA-256 evidence were preserved.
Canary and activation	passed	Checkpoints0,5,15,60 completed. Promotion activation requested06:27:50UTC; runtime restarted06:35:46UTC. These synthetic-workload checks include real local inference and do not claim external user traffic.
Post-activation verification	passed	Execution indices1,2,3 completed with fresh production-boundary inference passing in every receipt. Finalized06:41:48UTC; live health later confirmed loaded and checkout revisionacc8b033effb415f3ab644d18ae86f77da8883ec.

Current state

Fresh arithmetic improvement implemented; earlier Riemann improvement retained.
Hiro and Qwen are healthy. A subsequent candidate is being repaired by the canonical controller.
The bounded follow-up is paused after verified completion.

Next steps

Let the canonical controller process subsequent eligible improvements under the same validation and activation gates.
Use the preserved evidence to assess repeatability before claiming recursive improvement reliability.