docs: fix @sanity/icons v5 subpath imports in localization, page-builder, seo refs

Same broken root-import pattern fixed in schema.md: @sanity/icons v5
removed named icon exports from the package root, so the old
`import { XIcon } from '@sanity/icons'` style type-checks but crashes
Sanity Studio at runtime. Update the icon import examples in
localization.md, page-builder.md, and seo.md to the v5 per-icon
subpath style (e.g. `@sanity/icons/Home`).

Author: claude

skills/sanity-best-practices/references/localization.md

@@ -43,7 +43,7 @@ Don't create nearly identical copies with slight differences (e.g., US vs Britis
 
 ```typescript
 // schemaTypes/locale.ts
-import { TranslateIcon } from '@sanity/icons'
+import { TranslateIcon } from '@sanity/icons/Translate'
 import { defineField, defineType } from 'sanity'
 
 export const localeType = defineType({
@@ -167,7 +167,7 @@ For singletons like homepages that need a separate document per locale, combine
 
 ```typescript
 // schemaTypes/homePage.ts
-import { HomeIcon } from '@sanity/icons'
+import { HomeIcon } from '@sanity/icons/Home'
 import { defineType, defineField } from 'sanity'
 
 export const homePageType = defineType({
@@ -237,7 +237,7 @@ Create a helper to show one singleton per locale in the Structure:
 ```typescript
 // src/structure/index.ts
 import { StructureBuilder, StructureResolver } from 'sanity/structure'
-import { HomeIcon } from '@sanity/icons'
+import { HomeIcon } from '@sanity/icons/Home'
 
 const LOCALES = ['en', 'fr', 'de']
 

skills/sanity-best-practices/references/page-builder.md

@@ -74,7 +74,7 @@ Every block should have consistent previews:
 
 ```typescript
 import { defineType } from "sanity";
-import { BlockContentIcon } from "@sanity/icons";
+import { BlockContentIcon } from "@sanity/icons/BlockContent";
 
 export const splitImageType = defineType({
   name: "splitImage",

skills/sanity-best-practices/references/seo.md

@@ -193,7 +193,7 @@ Create a redirect document type for content team management.
 ```typescript
 // schemaTypes/redirectType.ts
 import { defineField, defineType, SanityDocumentLike } from "sanity";
-import { LinkIcon } from "@sanity/icons";
+import { LinkIcon } from "@sanity/icons/Link";
 
 function isValidPath(value: string | undefined) {
   if (!value) return "Required";