v4.0.0-rc.4

Release Candidate 4 - Critical CI/CD and Build Fixes

Bug Fixes

CI/CD Workflow Fixes:

• Fixed RubyGems action version (v2 doesn't exist, now using v1.0.0)
• Fixed pnpm workspace configuration (replaced invalid --cwd flag with -C)
• Fixed Docker environment variables (undefined $LD_LIBRARY_PATH in Dockerfiles)
• Fixed Maven credentials timing (env vars now available when setup-java generates settings.xml)
• Fixed Maven GPG configuration (modernized arguments to --pinentry-mode=loopback format)
• Removed release notes update job from publish workflow (not needed)

Core Library Fixes:

• Fixed Tesseract OCR test failure (corrected API call ordering: set_image before set_source_resolution)
• Fixed Go Windows CGO linking (build Rust FFI with x86_64-pc-windows-gnu target for MinGW compatibility)

Testing:

• All 24 Tesseract tests now pass (was 23/24 in rc.3)
• Go bindings now build successfully on Windows