Function validate_puzzle 

pub fn validate_puzzle(
    puzzle: &Puzzle,
    solution: &Solution,
) -> Result<(), DominoError>

Validates a given puzzle solution by computing a model and checking the objective value.

This function takes a reference to a Puzzle and a Solution, then performs the following steps:

• Computes a string-based model representation using compute_model().
• Executes the computed model using Model::execute().
• Extracts the objective value from the solver result.
• Compares the objective value against the expected missing tile count.
• Returns Ok(()) if the objective value matches the missing tile count, otherwise returns a DominoError.

Arguments

• puzzle - A reference to the Puzzle structure representing the puzzle to be validated.
• solution - A reference to the Solution structure representing the proposed solution.

Returns

• Ok(()) - If the computed objective value matches the expected number of missing tiles.
• Err(DominoError::ModelError) - If the model execution fails or the objective value is incorrect.

Errors

This function returns a DominoError::ModelError in the following cases:

• If compute_model() returns an error.
• If Model::execute() fails to execute the computed model.
• If the extracted objective value does not match the expected missing tile count.