feat: improve error message for connector directory resolution

Co-Authored-By: Aaron <AJ> Steers <[email protected]>

Author: devin-ai-integration[bot]

airbyte_cdk/cli/airbyte_cdk/_secrets.py

@@ -100,7 +100,15 @@ def fetch(
         if not connector_name:
             connector_name = connector_directory.name
     elif connector_name:
-        connector_directory = find_connector_root_from_name(connector_name)
+        try:
+            connector_directory = find_connector_root_from_name(connector_name)
+        except FileNotFoundError as e:
+            raise FileNotFoundError(
+                f"Could not find connector directory for '{connector_name}'. "
+                "Please provide the --connector-directory option with the path to the connector. "
+                "Note: This command requires either running from within a connector directory, "
+                "being in the airbyte monorepo, or explicitly providing the connector directory path."
+            ) from e
     else:
         raise ValueError("Either connector_name or connector_directory must be provided.")