[Change] governance-04: Deterministic agent governance loading

[djm81]

OpenSpec change

Change id: governance-04-deterministic-agent-governance-loading

Artifacts: openspec/changes/governance-04-deterministic-agent-governance-loading/

Intent

Port the deterministic agent governance loading model from specfact-cli (paired issue #494): compact AGENTS.md, docs/agent-rules/ with YAML frontmatter and INDEX.md, explicit stop/continue semantics, GitHub issue metadata readiness gates, and session-bootstrap refresh of .specfact/backlog/github_hierarchy_cache.md when missing or stale (extends baseline #178).

Hierarchy

• Parent Feature: #163

Next steps

Run /opsx:apply governance-04-deterministic-agent-governance-loading (or equivalent) from a worktree; follow tasks.md.