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…pport for configurable global limits via `qpdf_global_get_uint32` and `qpdf_global_set_uint32`.
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…ntation, and update references in `FormField` methods.
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Simplify integer value retrieval by introducing a templated `value` method in the `Integer` class. Replace redundant exception handling logic across multiple functions with this unified approach. Streamline type conversions and improve readability.