[kyziq]

Fixes five errors in the TanStack Start guide (docs/docs/*/intlayer_with_tanstack.md), one commit each, applied to all 18 locales. Three of them stop the guide's code from compiling.

Changes

1. Step numbers: every locale had two steps with the same number, so later steps were off by one. Steps now run 1 to 18, and the FAQ's "Step N" references were updated to match.
2. useLocalizedNavigate used LOCALE_ROUTE without importing it, and spread navigate options such as search and replace into params, where they were lost. Both now match the template's hook. The file is renamed to .ts, as in the architecture tree.
3. The home page imported LocaleSwitcher as a default export, but the component only has a named export.
4. The home page and the metadata examples read content.title, but the dictionary declares it as meta.title.
5. The contentDir default is ['.'], not ./app (see packages/@intlayer/config/src/defaultValues/content.ts).

The changed code blocks are the same in every locale, so I didn't use the translate script. The only translated text that changes is the ./app value. updatedAt is bumped in each file.

Testing

• Copied the affected snippets into intlayer-tanstack-start-template (intlayer 9.7.0) and ran intlayer build and tsc --noEmit: 7 errors with the guide on main, 0 with this branch. The params fix in item 2 sits behind an as any cast, so I checked it against the template's hook instead.
• docs tests pass except markdownFormatting.test.ts, which fails on main too, with the same 9 files. None of them is a TanStack guide.

Not included

• Step 14 imports getRequestHeaders without using it, and a comment there mentions getIntlayerAsync while the code calls getIntlayer.
• Other guides, such as intlayer_with_vite+react.md, still give the old ./src default for contentDir.

I can send these in a separate PR.

[aymericzip]

Good catch @kyziq

Let's merge