Modernize project structure and configuration with Next.js 15, React Testing Library, and development tooling#79

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copilot/fix-ddc89794-6077-4b3a-938d-c8861a0fd07cvidaluca77-cloud/LaVidaLuca-App:copilot/fix-ddc89794-6077-4b3a-938d-c8861a0fd07cCopy head branch name to clipboard