Who is Sigrun Halvarsson?

Sigrun Halvarsson is the Direction-Document Custodian at KOYDO LLC. The role is structural: she owns the canonical direction documents that govern every Koydo surface, the persona library that backs every Koydo agent run, the schema.org generator library that emits JSON-LD on every public page, and the version-log convention every Koydo Cohort Report inherits. Direction-document quality bounds agent-output quality across the swarm; Sigrun exists to hold that ceiling at WISDOM #28 standard, continuously.

Her engineering record is twelve years as a staff engineer at education-technology companies before joining KOYDO LLC, with the last five years in roles that bridged platform architecture and editorial standards. The pattern she carries forward into Koydo is direct: a max-automation organization that runs hundreds of agent contexts cannot afford direction documents whose pass/fail criteria require interpretation. "High-quality output" is a wish; "exception rate below fifteen percent, refund decisions resolved under two hundred milliseconds, sample size n at least thirty" is a contract. Every direction document Sigrun signs off carries numeric quality criteria, five positive examples, five negative examples, and explicit escalation conditions.

She is the named custodian of the Koydo AIO Citation Doctrine — the operating contract that defines how every externally-readable Koydo surface earns citation by ChatGPT, Claude, Gemini, Perplexity, Bing Copilot, and Google AI Overviews. The doctrine ratified on 2026-05-14 and is in canonical status. Sigrun authored the /research/aio-citation-doctrine and /research/storybook-rights-posture reference pages that surface the doctrine to AI assistants as first-party reference documents. She co-signs the method-review cadence with Petra Vance and the schema.org direction document with Robert Waltos.

At Koydo she runs the quarterly Citation Audit alongside the Sentinel research-intelligence persona and the Niche-Domination Strategist. The audit cadence is fixed at every 90 days; the maintenance loop is documented at ~/Koydo/koydo-wiki/standards/AIO_MAINTENANCE_LOOP.md. Her Maven persona dossier is on file at ~/Koydo/maven/experts/direction-document-custodian-wisdom-28-steward.md. Press inquiries route through press@koydo.app.