RSS: how to use the `excerpt` in the RSS feed

[julien-deramond]

Context

When going to https://openresource.dev/articles/, the excerpt of each article is used to provide a summary of the article before reading it.

For instance:

openresource.dev/src/content/docs/articles/bluesky-starter-pack.mdx

Lines 6 to 8 in 3ae1832

	excerpt: "**On June 26, 2024, Bluesky, the decentralized social media platform, introduced starter packs** to enhance user experience and facilitate community growth. These personalized invites allow users to bring friends directly into their customized Bluesky environments. A starter pack can include custom feeds and recommended follows, encouraging new users to connect with favorite accounts. Although not searchable, starter packs can be shared via links or embed previews within the Bluesky app.
	<br><br>
	**The Open {re}Source team has created a Bluesky starter pack focused on the open-source community.** They curated a selection of accounts and individuals related to open source, along with a custom \"Open Source\" feed. This starter pack, available through a QR code or link, invites users to join and engage with the open source community on Bluesky. Feedback and suggestions are welcomed, fostering a collaborative and personalized social media experience."

Description

The idea of this issue would be to check whether it's possible to use this excerpt content for the RSS feed provided by Starlight Blog.

Some articles are using images or even custom components that wouldn't be rendered by the RSS feed, so using the excerpt content could be a better solution to know from the RSS feed what's more or less the content of the articles before reading them.