update filesystems config to be consistent with dbt convention

Author: mrjsj

docs/integrations/engines/duckdb.md

@@ -279,14 +279,13 @@ The `filesystems` accepts a list of file systems to register in the DuckDB conne
         extensions:
           - ducklake
         filesystems:
-          - protocol: abfs
-            storage_options:
-              account_name: onelake
-              account_host: onelake.blob.fabric.microsoft.com
-              client_id: {{ env_var('AZURE_CLIENT_ID') }}
-              client_secret: {{ env_var('AZURE_CLIENT_SECRET') }}
-              tenant_id: {{ env_var('AZURE_TENANT_ID') }}
-              # anon: False # To use azure.identity.DefaultAzureCredential authentication 
+          - fs: abfs
+            account_name: onelake
+            account_host: onelake.blob.fabric.microsoft.com
+            client_id: {{ env_var('AZURE_CLIENT_ID') }}
+            client_secret: {{ env_var('AZURE_CLIENT_SECRET') }}
+            tenant_id: {{ env_var('AZURE_TENANT_ID') }}
+            # anon: False # To use azure.identity.DefaultAzureCredential authentication 
     ```
 
 

sqlmesh/core/config/connection.py

@@ -377,9 +377,9 @@ def init(cursor: duckdb.DuckDBPyConnection) -> None:
                 from fsspec import filesystem  # type: ignore
 
                 for file_system in self.filesystems:
-                    protocol = file_system.pop("protocol")
-                    storage_options = file_system.pop("storage_options")
-                    fs = filesystem(protocol, **storage_options)
+                    options = file_system.copy()
+                    fs = file_system.pop("fs")
+                    fs = filesystem(fs, **options)
                     cursor.register_filesystem(fs)
 
             for i, (alias, path_options) in enumerate(