OpenSystemsDevelopment / qpdf

…DFJob_private.hh`, streamline includes, and reduce header dependencies.

Remove redundant call to `setRecompressFlate(false)` in QPDFJob::doCh…

Avoid unnecessary re-compression in QPDFJob::doCheck

Stop `--compress-streams=n` from automatically disabling preservation…

Add NSIS installation step to Windows build script

…g encryption and update related tests.

During xref recovery, limit trailer search to the last 100 candidates…

…deliberately broken files more efficiently.

Remove implementation detail from QPDFWriter.hh

…mbers`, update related logic, and clean up obsolete code.

…:Members`, update related logic, and remove obsolete declarations.

…StreamLength`, `computeDeterministicIDData`, and `calculateXrefStreamPadding` to `QPDFWriter::Members`. Update related logic and remove obsolete declarations.

…rs`, update encryption and stream handling logic, and remove obsolete test coverage entries.

…related logic, and remove obsolete test coverage entries.

…ueueObjectsStandard`, `enqueueObjectsPCLm`, `enqueuePart`, `assignCompressedObjectNumbers`, and `getTrimmedTrailer` to `QPDFWriter::Members`. Update related logic and remove obsolete test coverage entries.

…alStreams`, `preserveObjectStreams`, and `generateObjectStreams` to `QPDFWriter::Members`. Update related logic and remove obsolete test coverage entries.

…mbers` and update encryption parameter handling logic.

…bleIncompatibleEncryption` and `compareVersions` to `QPDFWriter::Members`. Remove outdated test coverage entries.

…d update initialization logic accordingly.

Add key and value validation in `NNTreeImpl` replacement logic to ens…

Cache DocumentHelpers

…ate tests and adjust exit status accordingly.

… shared helper retrieval, validation methods, and update usages across the codebase. Remove unused test coverage entries.

…t. Add shared helper retrieval, validation methods, and update usages across the codebase.

…le handling. Add shared helper retrieval, validation methods, and update usages across the codebase.

Integrate `QPDFPageLabelDocumentHelper` with `QPDF` for improved page label handling. Add methods for retrieving shared helper instances, validating page label structures, and streamline usage throughout the codebase.

Create new private-API class Name

…or improved clarity and consistency, and remove unused test coverage entries.

… operator[] and `Name` for improved clarity and consistency, and remove unused test coverage entries.

…, and `Array` for improved clarity and consistency, and simplify `/Filter` and `/DecodeParms` handling.

…DecodeParms` using `Name`, `Dictionary`, and `Array` for improved clarity and consistency, and remove unused test coverage entries.

…tor[] for improved clarity and consistency, and remove unused test coverage entries.

…ame` for improved clarity and consistency, and simplify `/Identity` handling.

…ator[] for improved consistency and clarity, and remove unused test coverage entry.