Add PasswordChangeCard with Zod validation, Better Auth integration, and full EN/PL translations for settings page.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Add isAuthenticated check to dashboard with redirect to sign-in. Move settings page to locale segment.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Add [locale] layout with locale validation and static rendering support. Update root layout to read x-next-intl-locale header for dynamic lang attribute.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Add next-intl routing config, proxy middleware, and update request config to use requestLocale from middleware. Add @/i18n/* path alias to tsconfig.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>