Every date on this page is real: it comes from a per-guide content fingerprint, so an entry moves up only when a guide's substance genuinely changes — not when the site re-renders. Machines can read the same changelog at /api/changes.
39 guides tracked. Content fingerprinting began July 2026 — guides will appear here as "Updated" the moment their substance changes. Every page on the site also carries machine-readable freshness: sitemap lastmod, Atom feed, and the /api/changes endpoint.
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