Function load_stack_spec 

pub fn load_stack_spec(
    json: &str,
) -> Result<SerializableStackSpec, VersionedLoadError>

Load a stack spec from JSON with automatic version detection and migration.

This function:

1. Detects the AST version from the JSON
2. Deserializes the appropriate version
3. Migrates to the latest format if needed

Arguments

• json - The JSON string containing the AST

Returns

The deserialized and migrated SerializableStackSpec

Example

let json = std::fs::read_to_string("MyStack.stack.json")?;
let spec = load_stack_spec(&json)?;