Analyse traffic by country and find international SEO opportunities

For my main Search Console property, run an international traffic analysis over the last 28 days:

1. Call get_search_analytics grouped by country. Show the top 20 countries by impressions with: country, clicks, impressions, CTR, average position. Also compute the site-wide average CTR across all countries (impressions-weighted).

2. Flag any country where:
   - impressions > 1,000 AND
   - CTR is more than 20% below the site-wide average CTR (e.g., if site-wide CTR is 3.0%, flag any country with CTR < 2.4%)
   Label each flagged country as "LOCALIZATION_OPPORTUNITY" — this typically means searchers are finding the page but the title/snippet language or content doesn't match their locale, or there's no hreflang tag pointing to a local variant.

3. Identify the top 3 non-primary-country markets by impressions (exclude the country with the highest clicks — that's likely the primary market). For each of those 3 countries, pull the top 10 queries driving impressions from that country. For each query, flag it as "NO_LOCAL_PAGE" if there is no URL on the site that appears to be localised for that country (i.e., no country-code subdirectory, subdomain, or hreflang equivalent visible in the Search Console data).

Output: a Markdown table for step 1, a short flagged-countries list for step 2, and one subsection per non-primary market for step 3.