docs: improve SEO titles and descriptions across docs

[mintlify]

Summary

Rewrite description frontmatter on 84 MDX pages (English and Spanish) so each page has a unique, search-friendly summary in the 130–160 character range, and shorten two overlong Spanish OpenAPI titles.

Changes

• Replaced short or generic descriptions across account/, admin-api/, api-reference/, features/, getting-started/, guides/, platform/, and webhooks/ (and their es/ counterparts) with unique, descriptive summaries of 130–160 characters that include relevant search terms.
• Resolved 4 cases where unrelated pages shared an identical description (e.g. admin-api/authentication vs api-reference/authentication, and the same pair in es/).
• Shortened two Spanish OpenAPI page titles that exceeded 60 characters (get-a-single-metric-event-summary-for-a-user.mdx, get-a-users-points-summary.mdx).
• Left OpenAPI pages without explicit description: frontmatter untouched — descriptions are supplied by the OpenAPI spec.
• Did not modify page bodies, OpenAPI spec files, or unrelated frontmatter fields (e.g. og:description, subtitle, icon).

Context

Audit triggered to ensure every page has unique, well-sized SEO metadata so titles aren't truncated in search snippets and descriptions aren't replaced by auto-generated text.

[mintlify]

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Project	Status	Preview	Updated (UTC)
trophy	🟢 Ready	View Preview	May 19, 2026, 12:40 PM