Update Tomu Hirata affiliation in paper metadata

[Copilot]

The repository still identified Tomu Hirata with a Databricks affiliation in the paper metadata. This change audits the authored affiliation entry and replaces that stale organization reference with an individual researcher designation.

• Paper metadata
  • Updated paper/paper.md front matter so Tomu Hirata’s affiliation no longer points to Databricks, Inc., United States
  • Kept the existing author-to-affiliation index mapping intact; only the affiliation label for index 3 changed

authors:
  - name: Tomu Hirata
    affiliation: 3

affiliations:
  - name: Individual researcher
    index: 3

[Copilot]

🟢 Approval recommended

The change is a straightforward metadata update consistent with the PR description and does not introduce formatting or structural issues in the front matter.

Pull request overview

This PR updates the JOSS-style paper metadata to reflect Tomu Hirata’s current affiliation by replacing the previous “Databricks, Inc., United States” entry with “Individual researcher,” while preserving the existing author-to-affiliation index mapping.

Changes:

• Updated the affiliations entry for index 3 in the paper front matter to “Individual researcher”.
• Kept the author affiliation indices unchanged (Tomu Hirata remains mapped to affiliation: 3).

File summaries

File	Description
paper/paper.md	Updates affiliation label for index 3 in the paper’s YAML front matter to remove the stale organization reference.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 0
• Review effort level: Lite

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