Next.js Supabase V3 (#463)

Version 3 of the kit:
- Radix UI replaced with Base UI (using the Shadcn UI patterns)
- next-intl replaces react-i18next
- enhanceAction deprecated; usage moved to next-safe-action
- main layout now wrapped with [locale] path segment
- Teams only mode
- Layout updates
- Zod v4
- Next.js 16.2
- Typescript 6
- All other dependencies updated
- Removed deprecated Edge CSRF
- Dynamic Github Action runner

docs/dev-tools/translations.mdoc

@@ -0,0 +1,39 @@
+---
+status: "published"
+description: "The Next.js Supabase Turbo Dev Tools allows you to edit translations and use AI to translate them."
+title: "Translations Editor"
+label: "Translations Editor"
+order: 1
+---
+
+The Translations Editor is a tool that allows you to edit translations and use AI to translate them.
+
+It's a simple editor that allows you to edit translations for your project.
+
+{% img src="/assets/images/dev-tools-translations.webp" width="1000"
+height="600" /%}
+
+## Set OpenAI API Key
+
+First, you need to set the OpenAI API Key in the `apps/dev-tool/.env.local` file.
+
+```bash apps/dev-tool/.env.local
+OPENAI_API_KEY=your-openai-api-key
+```
+
+Either make sure your key has access to the `gpt-4o-mini` model or set the `LLM_MODEL_NAME` environment variable to whichever model you have access to.
+
+## Adding a new language
+
+First, you need to add the language to the `packages/i18n/src/locales.tsx` file as described in the [Adding Translations](/docs/next-supabase-turbo/translations/adding-translations) documentation.
+
+## Generate Translations with AI
+
+The Translations Editor allows you to generate translations with AI.
+
+You can use the AI to translate the translations for you by clicking the "Translate missing with AI" button.
+
+## Editing Translations
+
+Every time you update a translation, it will be saved automatically to the same file it's defined in.
+