chore(home): mirror from kalinamall (9883e6a) with papatramp URLs

backend/app/services/mobile_settings.py

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+from dataclasses import dataclass
+
+from sqlalchemy.orm import Session
+
+from app.models.mobile_settings import MOBILE_SETTINGS_ROW_ID, MobileSettings
+
+
+@dataclass(frozen=True)
+class MobileSettingsConfig:
+    devices_allowed: bool
+    max_devices_per_user: int
+    min_app_version: str | None
+    source: str = "db"
+
+
+def get_effective_mobile_settings(db: Session) -> MobileSettingsConfig:
+    row = db.get(MobileSettings, MOBILE_SETTINGS_ROW_ID)
+    if row is None:
+        return MobileSettingsConfig(
+            devices_allowed=False,
+            max_devices_per_user=3,
+            min_app_version=None,
+            source="default",
+        )
+    return MobileSettingsConfig(
+        devices_allowed=bool(row.devices_allowed),
+        max_devices_per_user=max(1, int(row.max_devices_per_user or 3)),
+        min_app_version=(row.min_app_version or "").strip() or None,
+        source="db",
+    )
+
+
+def upsert_mobile_settings(
+    db: Session,
+    *,
+    devices_allowed: bool,
+    max_devices_per_user: int,
+    min_app_version: str | None,
+) -> MobileSettingsConfig:
+    if max_devices_per_user < 1 or max_devices_per_user > 50:
+        raise ValueError("max_devices_per_user must be between 1 and 50")
+    cleaned_version = (min_app_version or "").strip() or None
+    row = db.get(MobileSettings, MOBILE_SETTINGS_ROW_ID)
+    if row is None:
+        row = MobileSettings(
+            id=MOBILE_SETTINGS_ROW_ID,
+            devices_allowed=devices_allowed,
+            max_devices_per_user=max_devices_per_user,
+            min_app_version=cleaned_version,
+        )
+        db.add(row)
+    else:
+        row.devices_allowed = devices_allowed
+        row.max_devices_per_user = max_devices_per_user
+        row.min_app_version = cleaned_version
+    db.commit()
+    db.refresh(row)
+    return get_effective_mobile_settings(db)