fix(i18n): eliminate portuguese text leaks across english routes

- Localize skip-to-content accessibility link and breadcrumb navigation
- Convert section layouts to dynamic generateMetadata with English titles, descriptions, and structured data
- Eliminate mixed language expressions and translate remaining SoC connection pin warnings and descriptions
- Translate component registry items, categories, tags, and IDF Component Manager guide
- Add strict identical string verification to scripts/check-i18n.mjs with technical allowlist

Co-Authored-By: Antigravity <noreply@google.com>

app/[locale]/diagnostico/page.jsx

@@ -54,6 +54,8 @@ const GRAVIDADE = {
 	"Critical": "text-danger",
 	Alta: "text-gold",
 	High: "text-gold",
+	"Média": "text-accent",
+	Medium: "text-accent",
 };
 
 const CHECKLISTS_PT = [