Cross-plugin OKF convergence, Stage 1 (docs/okf-convergence-brief.md): the
second-brain hub now conforms to OKF-compatible form so a shared retrieval
skill (and a sibling agent) can traverse it.
- serializeProfile leads with a constant `type: Profile` frontmatter block
(round-trip-safe: parseProfile skips it, parse-serialize identity holds).
- operations.md seed -> `type: Operations`; index.md seed -> `okf_version: 0.1`
marker (markdown text; index files carry no frontmatter per OKF); new
brain/journal/index.md (per-level index).
Premise correction: the brain is deliberately YAML-free and ingest/published
has a byte-exact round-trip invariant (SC2) a frontmatter block would break,
so the concept-bundle is scoped to brain/ ONLY; the ingest/ tributary is
excluded and pointed to from the hub. We emit frontmatter, add no parser.
Verified: new tests/okf-conform.test.ts (5/5); full brain suite 132/132 (0
regressions); cross-tool — okr/scripts/okf-check.mjs validates brain/ (exit 0).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011vmzxpsFpc8q19LaogAWLD
Kjell Tore Guttormsen
9e95222d12