next-intl-dot-notation-error

Features and purpose

Fix "INVALID_KEY: Namespace keys can not contain the character '.'" error in next-intl. Use when: (1) Getting INVALID_KEY error with dots in translation keys, (2) Migrating from flat key structure to next-intl, (3) Keys like "email.notification.booking" failing, (4) Error message lists specific keys with dots as invalid. Solution: Convert flat keys with literal dots to nested object structure. Applies to Next.js i18n with next-intl library.

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