Expand description
Markdown frontmatter + body parser (v0.4.0 P2-6).
Frontmatter shape (YAML-style, but parsed without a full YAML dependency — we only support the four keys we care about):
---
mnemo_id: 0190abcd-...
tags: [project-x, retrospective]
expires_at: 2026-12-31T00:00:00Z
agent_id: prod-runner
---
# Heading
Body...Anything that doesn’t match the expected key/value shape is ignored; an unrecognized key on a future Wuphf-flavoured frontmatter does not fail the parse.