feat: implement sliding session - extend TTL on each authenticated request

app/deps.py

@@ -10,7 +10,7 @@ from fastapi import Depends, HTTPException, Request, status
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.config import get_settings
-from app.core.auth import get_redis, get_session_data
+from app.core.auth import get_redis, get_session_data, refresh_session_ttl
 from app.core.db import get_db, set_tenant_context
 
 
@@ -44,6 +44,9 @@ async def get_current_user(
             detail={"detail": "Session expired or invalid", "code": "session_invalid"},
         )
 
+    # Sliding session: extend TTL on each authenticated request
+    await refresh_session_ttl(redis, session_id)
+
     if not session_data.get("is_active", True):
         raise HTTPException(
             status_code=status.HTTP_401_UNAUTHORIZED,