Add digital signage topic

[514sid]

Please confirm this pull request meets the following requirements:

• I followed the contributing guidelines: https://github.com/github/explore/blob/main/CONTRIBUTING.md.
• This change is not self-promotion.

Which change are you proposing?

• Suggesting edits to an existing topic or collection
• Curating a new topic or collection
• Something that does not neatly fit into the binary options above

---

Curating a new topic or collection

• I've formatted my changes as a new folder directory, named for the topic or collection as it appears in the URL on GitHub (e.g. https://github.com/topics/[NAME] or https://github.com/collections/[NAME])
• My folder contains a *.png image (if applicable) and index.md
• All required fields in my index.md conform to the Style Guide and API docs: https://github.com/github/explore/tree/main/docs

Digital signage is a growing field used for dynamic content delivery across industries. Curating this topic highlights open-source tools that help developers explore and build effective signage systems.

[Copilot]

Pull Request Overview

This PR adds a new “Digital signage” topic to the repository, defining its front-matter metadata and a brief description.

• Introduced a new folder topics/digital-signage with index.md
• Set up front matter for display name, short description, topic slug, and Wikipedia link
• Provided a one-sentence overview of digital signage

Comments suppressed due to low confidence (2)

topics/digital-signage/index.md:2

• [nitpick] Use Title Case for display_name to match other topic entries; consider changing it to 'Digital Signage'.

display_name: Digital signage

topics/digital-signage/index.md:7

• [nitpick] The topic description is quite brief; consider expanding with key use cases or notable open-source tools to provide more context for readers.

Digital signage is a segment of electronic signage that uses digital display technologies to present multimedia content in both public and private environments.

[514sid]

@jmeridth Thanks for merging the topics!

However, I've noticed that current and earlier merged topics don’t seem to be visible on GitHub. For example:

• Add a vibe-coding topic #4766
• feat: add chezmoi topic #4776

These were merged a few weeks ago, but the topics still appear uncurated on the site — they lack the extended descriptions and other metadata.

Is there typically a delay before curated topics go live, or could there be an issue with the publishing process?

[LuisAPI]

I noticed the same issue with @514sid. Even weeks later, vibe-coding and digital-signage still lack any sort of description or image whatsoever.

Oddly, I also found some topics I starred that end up not having any topic details at all, like youtube — last updated nearly a year ago with #4041.

[514sid]

@LuisAPI I opened a support ticket with GitHub about this a while back. Looks like the topics have been updated now.