Enhances super user experience with Castle wallet

Simplifies the user experience for super users by automatically using the Castle wallet for transactions, removing the need to configure a separate user wallet.

This change streamlines the workflow for super users by:
- Automatically assigning the Castle wallet to super users
- Hiding the user wallet configuration options in the UI
- Reloading user wallet settings to reflect the Castle wallet

views_api.py

@@ -59,13 +59,26 @@ async def check_castle_wallet_configured() -> str:
 
 async def check_user_wallet_configured(user_id: str) -> str:
     """Ensure user has configured their wallet, return wallet_id"""
-    settings = await get_user_wallet(user_id)
-    if not settings or not settings.user_wallet_id:
+    from lnbits.settings import settings as lnbits_settings
+
+    # If user is super user, use the castle wallet
+    if user_id == lnbits_settings.super_user:
+        castle_settings = await get_settings("admin")
+        if castle_settings and castle_settings.castle_wallet_id:
+            return castle_settings.castle_wallet_id
+        raise HTTPException(
+            status_code=HTTPStatus.BAD_REQUEST,
+            detail="Castle wallet not configured. Please configure the Castle wallet in settings.",
+        )
+
+    # For regular users, check their personal wallet
+    user_wallet = await get_user_wallet(user_id)
+    if not user_wallet or not user_wallet.user_wallet_id:
         raise HTTPException(
             status_code=HTTPStatus.BAD_REQUEST,
             detail="You must configure your wallet in settings before using this feature.",
         )
-    return settings.user_wallet_id
+    return user_wallet.user_wallet_id
 
 
 # ===== UTILITY ENDPOINTS =====
@@ -529,6 +542,16 @@ async def api_get_user_wallet(
     user: User = Depends(check_user_exists),
 ) -> UserWalletSettings:
     """Get current user's wallet settings"""
+    from lnbits.settings import settings as lnbits_settings
+
+    # If user is super user, return the castle wallet
+    if user.id == lnbits_settings.super_user:
+        castle_settings = await get_settings("admin")
+        if castle_settings and castle_settings.castle_wallet_id:
+            return UserWalletSettings(user_wallet_id=castle_settings.castle_wallet_id)
+        return UserWalletSettings()
+
+    # For regular users, get their personal wallet
     settings = await get_user_wallet(user.id)
     # Return empty settings if not configured (so UI can show setup screen)
     if not settings:
@@ -542,6 +565,15 @@ async def api_update_user_wallet(
     user: User = Depends(check_user_exists),
 ) -> UserWalletSettings:
     """Update current user's wallet settings"""
+    from lnbits.settings import settings as lnbits_settings
+
+    # Super user cannot set their wallet separately - it's always the castle wallet
+    if user.id == lnbits_settings.super_user:
+        raise HTTPException(
+            status_code=HTTPStatus.FORBIDDEN,
+            detail="Super user wallet is automatically set to the Castle wallet. Update Castle settings instead.",
+        )
+
     if not data.user_wallet_id:
         raise HTTPException(
             status_code=HTTPStatus.BAD_REQUEST,