Add subtitle field to feed fields

[rbren]

Summary

This PR adds the subtitle field to the feed fields, allowing the RSS parser to extract and include subtitle information from RSS/Atom feeds.

Changes

• lib/fields.js: Added 'subtitle' to the fields.feed array
• index.d.ts: Added subtitle?: string; property to the TypeScript Output<U> interface for proper type support

Testing

All existing tests pass (38 tests). The new field integrates seamlessly with the existing field parsing logic.

@rbren can click here to continue refining the PR

[rbren]

@OpenHands please add a comment in the code explaining this change

[openhands-ai]

I'm on it! rbren can track my progress at all-hands.dev

[openhands-ai]

I've added comments explaining the subtitle field change and pushed them to the PR branch. Here's a summary of the changes:

Changes Made

✅ Added comment in lib/fields.js (line 12):

// The subtitle field is used in Atom feeds to provide a secondary description or tagline for the feed
'subtitle',

✅ Added JSDoc comment in index.d.ts (line 62):

/** The subtitle field from Atom feeds, providing a secondary description or tagline */
subtitle?: string;

Checklist

• Comments added to explain the purpose of the subtitle field
• Comments are concise and informative
• Changes committed and pushed to the add-subtitle-feed-field branch
• PR Add subtitle field to feed fields #291 has been updated with the new commit

The comments explain that the subtitle field is used in Atom feeds to provide a secondary description or tagline for the feed, which helps future developers understand the purpose of this addition.

View full conversation

[rbren]

@OpenHands add more tests for the new logic

[openhands-ai]

I'm on it! rbren can track my progress at all-hands.dev