chore: import upstream snapshot with attribution

open_notebook/exceptions.py

@@ -0,0 +1,70 @@
+class OpenNotebookError(Exception):
+    """Base exception class for Open Notebook errors."""
+
+    pass
+
+
+class DatabaseOperationError(OpenNotebookError):
+    """Raised when a database operation fails."""
+
+    pass
+
+
+class UnsupportedTypeException(OpenNotebookError):
+    """Raised when an unsupported type is provided."""
+
+    pass
+
+
+class InvalidInputError(OpenNotebookError):
+    """Raised when invalid input is provided."""
+
+    pass
+
+
+class NotFoundError(OpenNotebookError):
+    """Raised when a requested resource is not found."""
+
+    pass
+
+
+class AuthenticationError(OpenNotebookError):
+    """Raised when there's an authentication problem."""
+
+    pass
+
+
+class ConfigurationError(OpenNotebookError):
+    """Raised when there's a configuration problem."""
+
+    pass
+
+
+class ExternalServiceError(OpenNotebookError):
+    """Raised when an external service (e.g., AI model) fails."""
+
+    pass
+
+
+class RateLimitError(OpenNotebookError):
+    """Raised when a rate limit is exceeded."""
+
+    pass
+
+
+class FileOperationError(OpenNotebookError):
+    """Raised when a file operation fails."""
+
+    pass
+
+
+class NetworkError(OpenNotebookError):
+    """Raised when a network operation fails."""
+
+    pass
+
+
+class NoTranscriptFound(OpenNotebookError):
+    """Raised when no transcript is found for a video."""
+
+    pass