- Register `content:file:afterParse` hook to inject `wordCount` + `minutes`
on every parsed markdown content object (D-19: 200 wpm, floor 1 min).
- Import pure util `countWordsInMinimalBody` from app/utils/countWords.
- Guard against non-`.md` files (defensive — hook fires on all sources).
- Values persist in @nuxt/content SQLite DB and are queryable via
queryCollection thanks to matching Zod fields (content.config.ts).
