Agent OS: Repo-as-Operating-System Scaffold

Create a lightweight “operating system” inside this repo. Outcome: persistent memory for an agent-run workflow. Constraints: no external services. Artifacts: /ops/state/kpis.json, /ops/state/pipeline.json, /ops/decisions.md, /ops/experiments/experiment-log.md, /ops/daily/day-01.md. Definition of done: files exist and are internally consistent.