Sessão: Condicionais (IF, ELSE / SE SENAO): Lêda e Késia

這個 Issue 沒有描述。

The issue body names no files, tests, or entry points. Start by clarifying the intended deliverable for the conditionals session and where it belongs in the repository, then define the exercises and validation needed before implementation. Done should mean the agreed session content is present and its checks pass.

由索引模型根據 Issue 內容生成。