feat: implement automatic crediting of new accounts with 1 million satoshis

- Modified the user account creation process to automatically credit new
accounts with 1,000,000 satoshis upon creation.
- Updated the `create_user_account_no_ckeck` function to include error
handling and logging for the credit operation.
- Enhanced tests to verify the balance for newly registered users,
ensuring the correct credit amount is applied.
- Documented affected account creation paths and testing instructions in
the new `AUTO_CREDIT_CHANGES.md` file.

extensions.json

@@ -74,26 +74,6 @@
             "archive": "https://git.atitlan.io/aiolabs/castle/archive/v0.0.1.zip",
             "hash": "075a96a6f3151472302434fc50552346f7910f82b9ae1c6508d1bfd6db14607b"
         },
-        {
-            "id": "castle",
-            "repo": "https://git.atitlan.io/aiolabs/castle",
-            "name": "Castle",
-            "version": "0.0.2",
-            "short_description": "Castle Accounting",
-            "icon": "https://git.atitlan.io/aiolabs/castle/raw/branch/main/static/image/castle.png",
-            "archive": "https://git.atitlan.io/aiolabs/castle/archive/v0.0.2.zip",
-            "hash": "0653b7dbfa37da023c7f4fe976441fd6bef0d56fe6d08eb4ce6d4ec178632f4a"
-        },
-        {
-            "id": "castle",
-            "repo": "https://git.atitlan.io/aiolabs/castle",
-            "name": "Castle",
-            "version": "0.0.3",
-            "short_description": "Castle Accounting",
-            "icon": "https://git.atitlan.io/aiolabs/castle/raw/branch/main/static/image/castle.png",
-            "archive": "https://git.atitlan.io/aiolabs/castle/archive/v0.0.3.zip",
-            "hash": "b9640dbeec00274d8382b6d9e3b4250f356f002c047c8e380ff9acecb2058f39"
-        },
         {
             "id": "lnurlp",
             "repo": "https://github.com/lnbits/lnurlp",