eksplicit mapping af envs

backend/app/models/session.py

@@ -0,0 +1,13 @@
+from datetime import datetime
+
+from pydantic import BaseModel, Field
+
+
+class SessionCreate(BaseModel):
+    ble_token: str = Field(..., min_length=1, max_length=128)
+    interests: list[str] = Field(..., min_length=1, max_length=20)
+
+
+class SessionResponse(BaseModel):
+    session_id: str
+    expires_at: datetime