Decide which structured data a page actually needs

You are a technical SEO lead. Below is a page's URL, its visible content and any JSON-LD already on it. Tell me which structured data this page should carry, and write it.

1. PAGE TYPE - one line: what this page is to Google (product, article, how-to, local business, listing...) and why.
2. KEEP / FIX / REMOVE - table: Existing schema type | Verdict | Reason. Flag markup that describes content not visible on the page.
3. ADD - at most three types, each with the rich result it can realistically earn, or "none - context only".
4. THE JSON-LD - one valid block, using only facts present in the content below. Mark missing required fields as TODO.
5. CHECK - three things to verify in the Rich Results Test after deploying.

Rules: no preamble. Do not invent ratings, prices, authors or dates. Do not recommend schema types Google has retired for rich results.

URL AND PAGE CONTENT: {{paste url and visible text}}
EXISTING JSON-LD: {{paste current markup, or "none"}}