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f2e11d6967 v0.37.9.0 fix(frontmatter): canonical-style normalization for tag arrays (#1252)
Aligns the auto-fix engine, the inferred-frontmatter serializer, and the
agent-facing skill on a single canonical YAML shape for tag arrays. v0.37.5.0
fixed the validator (it stopped flagging valid YAML); this release lines up
everything else with that fix.

Layer 1 (brain-writer.ts step 3a): allow-listed to `tags:` / `aliases:` keys.
Rewrites `tags: ["yc"]` to `tags: ['yc']`; apostrophe fallback for
`"Men's Fashion"`. Shares a NESTED_QUOTES dedup gate with the existing
step 3 so one file with both rewrites surfaces as one audit entry, not two.

Layer 4 (frontmatter-inference.ts): serializer emits the same canonical
single-quote form by default. Inferred frontmatter on import and `--fix`
output now match byte-for-byte.

Layer 5 (frontmatter-guard SKILL.md): new "Prevention" section showing
canonical vs JSON-style arrays + the JSON.stringify trap that produces
the non-canonical form. Future agent writes start canonical.

Parity test added to markdown-validation.test.ts pinning agreement between
per-value safeLoad parsing and gray-matter full-document parse on the
load-bearing inputs.

PR #1238's "Layer 3" (put_page auto-normalization) was dropped during
plan review: put_page parses YAML into typed fields and hashes them, so
single-quoted vs double-quoted arrays are functionally identical in
storage. The fix lives where the writes happen, not on the read path.

Source PRs absorbed: #1217 (closed, serializer fix) + #1238 (closed,
four-layer defense-in-depth narrowed to three layers). PR #1229 already
merged as v0.37.5.0.

Co-authored-by: garrytan-agents <garrytan-agents@users.noreply.github.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-21 09:26:37 -07:00

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