fix(collections): tolerate unquoted colons in titles + cleaner excerpts#22
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The model keeps emitting YAML values like \`title: Commute Mastery: Owning the Road\` — the second colon makes front-matter's strict YAML parse throw. buildCollections then fell back to an empty data object, which made \`post.title\` resolve to the filename (\`commute-mastery.md\`), which slugified to \`commute-mastery-md\`, and the excerpt extraction was also running against the un-stripped source so the user saw front-matter \`---\` lines in their blog list. Three fixes, one file each: 1. src/runtime/frontMatter.ts (new) — shared YAML front-matter parser used by both the markdown renderer and buildCollections. Three tiers: strict \`fm()\` parse, fenced split + \`fm()\`, and a naive \`key: value\` per-line fallback that splits on the first colon only so "Commute Mastery: Owning the Road" comes through as a complete string. markdownRender re-exports parseFrontMatter from here so existing callers are unchanged. 2. src/runtime/nunjucksRender.ts buildCollections — strips leading headings, markdown images, and raw HTML tags from the body before truncating to 180 chars. Previous excerpts surfaced hero <img> tags as the lead text. 3. scripts/ — a local verify harness for the exact site the user flagged confirmed all three blog posts now resolve to proper titles, dates, and prose excerpts. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Blog list pages were showing raw YAML in the excerpt and filenames as link text because the model's
title: Foo: Bartripped the strict YAML parser. Shared front-matter helper falls back to a naive first-colon split; excerpts now strip headings / images / HTML. Verified locally against site 2980b971.