okf-spec

OKF v0.2 condensed reference: the conformance floor, the frontmatter field table by family, reserved files, the actor convention, cross-linking rules, and the v0.1-to-v0.2 changes. Use when authoring or reviewing an OKF concept file, deciding which frontmatter fields to set, or checking whether a bundle is conformant. Trigger phrases -- "what fields does OKF support", "is verified required", "what changed from 0.1 to 0.2", "actor convention", "frontmatter reference table", "is this concept conformant".