ci/packaged-agent-toolchain-assets

[2391384896]

Summary

• Windows x64 release job uses the official msys2/setup-msys2 action to build the fixed FFmpeg input before the existing forge:make step.
• The build output is passed through FFMPEG_BUNDLE_SOURCE_DIR; Git remains prepared by the source repository bundle script, matching the existing Python/Node release flow.
• No private producer workflow, artifact run ID, UV assertion, source-offer pipeline, recursive PE scan, or bulk signing is added.

Dependencies

• AOE-HQ/aoe-desktop#1938
• Preserves the scoped signing contract from fix/windows-signing-all-release-channels #31 and AOE-HQ/aoe-desktop#1937: only Floatboat.exe and the final installer use the existing Racent signing path.

Validation

• Ruby YAML parse
• actionlint v1.7.12
• git diff --check
• Windows x64 public release: https://github.com/floatboatai/floatboat-release/actions/runs/29491544866
• Windows log contains exactly two Racent sign calls and no recursive signing helper