Exit with code 1 when running `quarto render --quiet <file>`?

I have:

• searched the issue tracker for similar issues
• installed the latest version of Quarto CLI
• formatted my issue following the Bug Reports guide

Bug description

When rendering with --quiet flag, the exit code is always 1 even when it succeeds.

Steps to reproduce

1. Create any Quarto file (can even be empty)
2. Run quarto render --quiet file.qmd
3. The exit code is 1

Actual behavior

No response

Expected behavior

If it succeeds, a 0 exit code should be given.

Your environment

macOS Tahoe Public Beta. Quarto CLI

Quarto check output

Quarto 1.7.34
[✓] Checking environment information...
      Quarto cache location: /Users/sghuang/Library/Caches/quarto
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.6.3: OK
      Dart Sass version 1.85.1: OK
      Deno version 1.46.3: OK
      Typst version 0.13.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.7.34
      Path: /Applications/quarto/bin

[✓] Checking tools....................OK
      TinyTeX: v2025.08.02
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: TinyTex
      Path: /Users/sghuang/Library/TinyTeX/bin/universal-darwin
      Version: 2025

[✓] Checking Chrome Headless....................OK
      Using: Chrome found on system
      Path: /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
      Source: MacOS known location

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.13.5 (Conda)
      Path: /Users/sghuang/.local/share/mamba/envs/ds/bin/python
      Jupyter: 5.8.1
      Kernels: python3, ds

[✓] Checking Jupyter engine render....OK

[✓] Checking R installation...........OK
      Version: 4.5.1
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/library
      knitr: 1.50
      rmarkdown: 2.29

[✓] Checking Knitr engine render......OK

Reproduce the issue with quarto render --quiet file.qmd and compare its exit status with a normal render. Trace the CLI entry point and the handling of --quiet to find why successful rendering returns 1. Done means successful quiet renders return 0, with a regression test covering the command.