Add dsh-paperpanel to Browse files and data

[Floatingfur]

What kind of change is this?

• New catalog entry

Checklist (for new entries)

• The linked repo resolves and is not empty/archived.
• It's genuinely about DSH Plugins.
• It's not already listed anywhere in this README.
• The entry follows the exact format: a bold action phrase, then with [name](repo-url) by [author](author-url). then a factual description, star count, and license.
• It's placed alphabetically within the correct category.

Anything else maintainers should know?

Install command is copied verbatim from the project README (GitHub source form). npm publishing is still pending, so the entry can be switched to dsh plugin --profile web add dsh-paperpanel once it lands on npm.

Entry appended at the end of the category; happy to move it if a specific ordering is required.