ReadonlyrelPath relative to the repo root (e.g. "analysis/methodologies/foo.md")
ReadonlystemFilename stem without extension
ReadonlytitleHuman-readable title extracted from the first H1 heading or derived from the stem
ReadonlydescriptionShort summary (first non-empty paragraph, truncated to ~220 chars)
ReadonlyiconEmoji/icon that represents this document in the UI
Metadata for a single methodology / template Markdown file