hadeli/mvc-explication

This is a French teaching project that guides learners from three procedural PHP pages toward an MVC application, while preserving the same registration, login, authenticated-home, and logout behavior. The sampled executable code is only the classic first stage: its pages directly manage validation, SQLite access, sessions, and HTML. Later stages are documented learning milestones rather than implemented modules in this tree, so their documented capabilities are shown as curriculum progression, not as verified runtime calls.