[Windows] chrome-headless-shell.exe opens a visible console window on every render

[Darkdragon847]

Describe the bug

On Windows, every call to npx hyperframes render causes a visible CMD/console
window to flash open and close for each shot rendered. When rendering a batch
(e.g. 78 shots), 78 console windows open sequentially, making the machine
completely unusable during the render. This happens even when HyperFrames is
called from a GUI application with no terminal involved, confirming the window
is being created inside HyperFrames itself.

Link to reproduction

Not applicable — this bug reproduces on every Windows machine with any render call, including a blank project created with: npx hyperframes init repro --non-interactive --example blank npx hyperframes render ./repro --format png No custom code is needed to trigger it. The console window appears on all Windows installs regardless of project content.

Steps to reproduce

1. On Windows 11, run: npx hyperframes init repro --non-interactive --example blank
2. Run: npx hyperframes render ./repro --format png
3. Observe a CMD/console window flash open and close during render
4. Run a batch of renders (multiple shots) — one console window opens per shot

Expected behavior

No console window should appear. Chrome headless should run silently in the background.

Actual behavior

A console window opens for every shot rendered, showing the path:
C:\Users<username>.cache\hyperframes\chrome\chrome-headless-shell\win64-152.0.7977.30\chrome-headless-shell-win64\chrome-headless-shell.exe

Suppressing the window from the calling side (Python subprocess CREATE_NO_WINDOW +
STARTUPINFO) has no effect because the window is opened by chrome-headless-shell.exe
which is spawned inside HyperFrames' own Node.js code.

Suspected fix: add windowsHide: true to the Node.js child_process.spawn() call
that launches chrome-headless-shell.exe.

Environment

hyperframes doctor

  ✓ Version          0.8.10 (latest)
  ✓ Node.js          v22.19.0 (win32 x64)
  ✓ CPU              16 cores · AMD Ryzen 7 6800H with Radeon Graphics @ 3194MHz
  ✓ Memory           13.7 GB total · 3.0 GB available
  ✓ Chrome           cache: C:\Users\Sulav Raj Thapa\.cache\hyperframes\chrome\chrome-headless-shell\win64-152.0.7977.30\chrome-headless-shell-win64\chrome-headless-shell.exe
  ✓ FFmpeg           N-120424-g03b9180fe3-20250731
  ✓ Node environment non-TTY

Additional context

No response

[aryansk]

Thanks for the report — the Windows console flash is clear. I'll put up a fix.