Adds user settings for the Castle extension

Adds functionality to configure the Castle extension, including a wallet ID.

This allows administrators to customize the extension's behavior by specifying a dedicated wallet for castle operations.

views_api.py

@@ -22,6 +22,7 @@ from .crud import (
 from .models import (
     Account,
     AccountType,
+    CastleSettings,
     CreateAccount,
     CreateEntryLine,
     CreateJournalEntry,
@@ -31,6 +32,7 @@ from .models import (
     RevenueEntry,
     UserBalance,
 )
+from .services import get_settings, update_settings
 
 castle_api_router = APIRouter()
 
@@ -450,3 +452,25 @@ async def api_pay_user(
         "new_balance": balance.balance,
         "message": "Payment recorded successfully",
     }
+
+
+# ===== SETTINGS ENDPOINTS =====
+
+
+@castle_api_router.get("/api/v1/settings")
+async def api_get_settings(
+    wallet: WalletTypeInfo = Depends(require_admin_key),
+) -> CastleSettings:
+    """Get Castle settings (admin only)"""
+    user_id = "admin"
+    return await get_settings(user_id)
+
+
+@castle_api_router.put("/api/v1/settings")
+async def api_update_settings(
+    data: CastleSettings,
+    wallet: WalletTypeInfo = Depends(require_admin_key),
+) -> CastleSettings:
+    """Update Castle settings (admin only)"""
+    user_id = "admin"
+    return await update_settings(user_id, data)