fix(pre-release): remove draft text, fix [object Object] on ai-lab, clean slug routing

- ai-lab.astro: wrap venture summaries in LocaleCopy (was rendering [object Object])
- [slug].astro: add writing to exclusion list; remove draft sidebar paragraph
- site.ts: redirect family slug to /family-lab
- cookies.astro, privacy.astro: strip draft-only language from copy
- education.astro: remove unfinished-content bullet from editorial note

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/data/site.ts

@@ -240,5 +240,7 @@ export const sectionCardCta: Record<LocaleCode, string> = {
 };
 
 export function getSectionHref(section: LaunchSection) {
-  return section.slug === "education" ? "/education" : `/${section.slug}`;
+  if (section.slug === "education") return "/education";
+  if (section.slug === "family") return "/family-lab";
+  return `/${section.slug}`;
 }