add get public and storage feature

app/api/routes/public_ip.py

@@ -0,0 +1,25 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from app.dependencies import get_auth_db, get_current_auth_session
+from app.schemas.public_ip import PublicIPCheckResponse
+from app.services.auth import AuthenticatedSession
+from app.services.public_ip import check_public_ipv4
+
+router = APIRouter(tags=["public-ip"])
+
+
+@router.get("/public-ip/check", response_model=PublicIPCheckResponse)
+def run_public_ip_check(
+    session: Session = Depends(get_auth_db),
+    current_auth: AuthenticatedSession | None = Depends(get_current_auth_session),
+) -> PublicIPCheckResponse:
+    if current_auth is None:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="authentication required")
+
+    result = check_public_ipv4(session)
+    return PublicIPCheckResponse(
+        status=result.status,
+        checked_at=result.checked_at,
+        changed=result.changed,
+    )