OpenSystemsDevelopment / qpdf

… clean up unused file.

…and simplify pipeline logic.

…nt checks, and streamline string handling.

…` file and eliminate unneccessary creation of `Members` object.

…sting return values for uninitialized objects, and cleaning up error handling logic.

…ndles on invalid input..

…eplacing redundant logic with centralized functions, and streamlining bad token handling for improved readability and maintainability.

…raints, replacing hardcoded values for nesting, container size, and error limits.

Minor refactorings

… for improved code readability and maintainability.

… simplify logic. Update related test outputs and release notes.

Add new private-API class String

…` and replace with `String::utf16`.

Added `qpdf::String` class to encapsulate string operations. Updated `QPDFObjectHandle` string methods to utilize `qpdf::String`, streamlined empty string handling, and removed redundant test coverage entries.

…oved shared pointer handling, remove deprecated object methods, and update all references.

Refactor `qpdf-c` object handle management: replace `shared_ptr` with…

…DFObjectHandle` storage, remove unused trace calls, and streamline invalid handle checks.

Remove implementation detail from QPDF header file

…sages, and clean up `QPDF.hh`.

… and `findEndstream` to `Objects`, remove `QPDF::PatternFinder` class, and update related logic for improved encapsulation.

…, replace direct calls with `QIntC` equivalents, and clean up `QPDF.hh`.

Refactor `QPDFAcroFormDocumentHelper::traverseField`: add validation …

…t` consistency to handle invalid entries, and improve loop detection logic.

Refactor `QPDFAcroFormDocumentHelper`: simplify `traverseField`, remo…

…` parameter, update conditional checks, and streamline logic for field and annotation handling.

Tighten validation of the PDF spec requirements that form fields form a tree and that widget annotations have a single parent by utilizing `field_to` and `annotation_to_field` in the loop detection check.

Deprecate QPDF::compute_encryption_key

Refactor QPDFWriter configuration

…d calls, and streamline related logic for improved encapsulation and maintainability.

…with encapsulated `Config`, replace `qcf` with `d_cfg` for improved consistency, and adjust related logic for maintainability.

…shared` for progress reporters to improve clarity and efficiency.

…on` checks, consolidate parameter updates, and remove redundant code for improved clarity.

… parameter handling, and adjust related method calls for improved maintainability and readability.