- Add src/utils/urls.ts with baseUrl, feedRssUrl, feedAtomUrl, feedUrl,
feedEmailAddress, feedTopicPattern
- Add optional EMAIL_DOMAIN env var so web domain and email domain can
differ (e.g. demo.kill-the.news serves feeds, @kill-the.news receives mail)
- Replace all inline domain template literals with the new helpers
- Remove unused site_url/feed_url fields from FeedConfig
- Remove unused feedPath param from fetchFeedData
- Extract verifyCallback() to deduplicate verifyAndStoreSubscription /
verifyAndDeleteSubscription
Co-Authored-By: Claude Sonnet 4.6 <[email protected]>