Simple HTTP Auth designed

specs/005-simple-http-auth/data-model.md

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+# Data Model: Simple HTTP Auth
+
+## Entities
+
+### Passphrase
+- **Description**: A secret string used for authentication.
+- **Attributes**: 
+  - `value`: string (The actual passphrase, stored securely in .env)
+
+### Session
+- **Description**: Represents a period of continuous interaction between the user and the SPA, during which access is maintained.
+- **Attributes**: 
+  - `id`: string (Unique identifier for the session)
+  - `isAuthenticated`: boolean (Indicates if the session is authenticated)
+  - `expiry`: datetime (Timestamp when the session expires, if applicable)