docs: sync country coverage with Grid Switch Corridor List

[pengying]

Summary

Sync mintlify/snippets/country-support.mdx with the Grid Switch Corridor List source of truth.

• Add Egypt (EG) as a Live destination — newly live via Thunes (Bank Transfer).
• Bump headline count: 60 → 62 (header FeatureCard tags + "Send payments to N countries" copy). This also reconciles a prior off-by-one in the headline (the table on main already had 61 rows while the header said 60).
• Bump Middle East & Africa regional count: 14 → 15. Regional total now reconciles: 32 + 15 + 10 + 5 = 62.
• Coming Soon (CA, HK, KR) already matches the spreadsheet filter (Public Roadmap = Yes AND Status ≠ Live) — no change.

Note on #534

This PR supersedes #534, which was opened on 2026-06-05 and demoted China (CN) from Live to Coming Soon. As of the current sheet, China's Thunes row (row 66) is Status = "Live" with the note "successful prod test on 6/5/2026" — so China should remain in the Live table. Recommend closing #534.

Live destinations were derived from rows with Status = "Live" (column J), deduped on ISO code; Egypt was the only delta vs. the current published table.

Test plan

• make lint-markdown (no OpenAPI changes, no rebundle needed)
• Spot check the rendered snippet in mint dev

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[greptile-apps]

Greptile Summary

This PR syncs mintlify/snippets/country-support.mdx with the Grid Switch Corridor List by adding Egypt (EG) as a live Bank Transfer destination and correcting the headline country count from 60 to 62 (which also reconciles a pre-existing off-by-one where the table already had 61 rows).

• Egypt added: new table row inserted in correct alphabetical position (between Denmark and Estonia), with Bank Transfer as the payment rail.
• Counts updated: headline copy and FeatureCard tag both bumped to "62 Countries"; Middle East & Africa regional card updated from 14 → 15; regional sum (32 + 15 + 10 + 5 = 62) now matches the total.

Confidence Score: 5/5

Documentation-only change; all counts and alphabetical ordering have been verified to be internally consistent.

The single changed file adds one table row and updates three numeric strings. The table now has exactly 62 rows, the regional totals sum to 62, and Egypt is correctly placed between Denmark and Estonia alphabetically. No logic, APIs, or runtime behaviour is affected.

No files require special attention.

Important Files Changed

Filename	Overview
mintlify/snippets/country-support.mdx	Adds Egypt (EG) as a live Bank Transfer destination, bumps headline count from 60→62, and updates Middle East & Africa regional count from 14→15; all numbers cross-check correctly.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    Total["62 Live Countries"]
    Total --> EU["🌍 Europe\n32 countries\nSEPA / SEPA Instant"]
    Total --> MEA["🌍 Middle East & Africa\n15 countries ← +1 Egypt\nBank Transfer"]
    Total --> APAC["🌏 Asia-Pacific\n10 countries\nVarious rails"]
    Total --> AM["🌎 Americas\n5 countries\nPIX / SPEI / ACH / FedNow"]
    MEA --> EG["🇪🇬 Egypt (EG)\nBank Transfer\n✅ Newly Live via Thunes"]

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