Author name doesn't render correctly with YAML listing content when using extended author schema

[irmoodie]

Bug description

When using a YAML listing content file, the first two examples render correctly, but the third does not.

Renders correctly:

- title: "Item 1"
  author: Bob Smith

Renders correctly:

- title: "Item 1"
  author: 
    - Bob Smith
    - Anna Smith

Renders author names as [object Object]:

- title: "Item 1"
  author: 
    - name:
        family: Smith
        given: Anna
    - name:
        family: Smith
        given: Bob

The bug is identical to closed issue: #4881 (comment)

Steps to reproduce

listing.qmd:

---
title: "Listing Example"
listing:
  id: sample-listings
  contents: listing.yaml
  sort: "date desc"
  type: table
---

listing.yaml:

- title: "Item 1"
  author: 
    - name:
        family: Smith
        given: Anna
    - name:
        family: Smith
        given: Bob

Expected behavior

The author list processed and names appear as documented in the Quarto docs.

Actual behavior

The reprex is rendered with author names as [object Object]:

Your environment

OS: macOS 15.2 24C101 arm64
IDE: VSCode 1.96.3

Quarto check output

quarto check
Quarto 1.6.40
[✓] Checking environment information...
      Quarto cache location: /Users/iain/Library/Caches/quarto
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.4.0: OK
      Dart Sass version 1.70.0: OK
      Deno version 1.46.3: OK
      Typst version 0.11.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.6.40
      Path: /Applications/quarto/bin

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

[✓] Checking LaTeX....................OK
      Using: Installation From Path
      Path: /Library/TeX/texbin
      Version: 2022

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

[✓] Checking Python 3 installation....OK
      Version: 3.10.12 (Conda)
      Path: /opt/homebrew/Caskroom/miniforge/base/bin/python
      Jupyter: 5.7.2
      Kernels: julia-1.8, python3

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

[✓] Checking R installation...........OK
      Version: 4.4.1
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/library
      knitr: 1.48
      rmarkdown: 2.28

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

[mcanouil]

This is not the same issue as the previous one but related at least.
Thanks for the report.

It seems to be an issue when providing the YAML directly to contents

If you use the complete author schema, directly without putting in in a YAML file, you can already see the issue.

---
title: "12052"
listing:
  contents:
    - title: "Archived Item 1"
      author: Norah Jones
      date: 2020-01-01
      path: "archived/archived-item-.html"
      categories: [archived, technology]
    - title: "Archived Item 1"
      author: 
        - name:
            family: Smith
            given: Anna
        - name:
            family: Smith
            given: Bob
      date: 2020-01-01
      path: "archived/archived-item-.html"
      categories: [archived, technology]
  sort: "date desc"
  type: table
  categories: true
  sort-ui: false
  filter-ui: false
page-layout: full
title-block-banner: true
---

Array entry 1 with value name:
  family: Smith
  given: Anna failed to be a string.
Array entry 2 with value name:
  family: Smith
  given: Bob failed to be a string.

Listings from YAML does not expect name to be an array in this context.