fix: Enable Windows cross-compilation for FF146

[LeooNic]

Summary

Fixes 4 issues that prevented cross-compiling Camoufox v146 for Windows (--target=x86_64-pc-mingw32 from Linux):

• pid_t undefined: Added conditional typedef int pid_t for Windows targets in HeadlessWindowCapturer.h and nsScreencastService.cpp (ref FF146 Build Errors Thread #445)
• camoufox.exe.manifest missing: Added git rename directives to windows-theming-bug-modified.patch so the manifest file is properly renamed from firefox.exe.manifest
• Document.h include missing: Added #include "mozilla/dom/Document.h" in anti-font-fingerprinting.patch for gfxTextRun.cpp (was using doc->GetInnerWindow() with only a forward declaration)
• Dockerfile git setup: Changed setup-minimal to setup and added git config (required for the patch reset/apply cycle)

Testing

• Cross-compiled from Ubuntu (Docker) to Windows x86_64
• Ran on Windows 11 natively
• Verified with CreepJS: headless 0%, stealth 0%, lies 1 (canvas noise only), GPU confidence HIGH grade A
• UserAgent correctly reports Firefox/146.0

Build instructions

docker build -t camoufox-builder .
docker run -dt --name cfox --memory=22g --entrypoint bash camoufox-builder
docker exec cfox bash -c "cd /app && export BUILD_TARGET=windows,x86_64 && make set-target && make build && make package-windows arch=x86_64"

Note: Requires ~22GB RAM for Rust compilation. Set WSL2 memory via ~/.wslconfig on Windows.

Test plan

• Cross-compilation completes without errors
• Binary launches on Windows 11
• CreepJS audit passes (headless: 0, stealth: 0)
• Canvas, Audio, WebGL spoofing functional
• Full Playwright test suite (not yet run)

🤖 Generated with Claude Code