Development record

frontmatter canonical consolidation + delimiter bug: internal/core/lint (frontmatterFields) and internal/core/memory (parseFrontmatter/splitFileFrontmatter) each carry their own frontmatter scanner instead of internal/core/frontmatter — migrate both, behaviour-preserving, separate refactor commit (seed1); note memory needs nested-map values (source:) the flat scanner lacks — widen or scope. Bug: the canonical scanner closing-delimiter check compares the CR-trimmed line to exactly triple-dash, so a closing triple-dash with a trailing space/tab is not recognised and body lines leak as fields — TrimRight before both delimiter checks (frontmatter.go:37, C5). Corpus: the two lint/memory copies + the delimiter case.