SERP Markup Builder Builds everything that lives in a page's and shapes its search + answer-engine presence: title/meta/social tags (mode ) and Schema.org JSON-LD (mode ). Both modes operate on the same document head and write to . Mode Selector Pick the mode from the request; run both in sequence when the user wants the full SERP package. | Mode | Trigger | Output | CORE-EEAT lens | |------|---------|--------|----------------| | | "optimize meta tags", "title tag", "meta description", "Open Graph", "Twitter card", "improve CTR" | 3 titles + 3 descriptions (within char limits), OG/Twitter/can…