Replace JS-heavy/paywalled HTML sources with verified RSS feeds (CNN,
Fox, NBC, NPR, CBS, NYT, Time, Axios). Drop Reuters, AP, Forbes, MSN and
US News, which offer no public/working RSS and are not reliably scrapable.

- services/feeds.py parses RSS 2.0/1.0 and Atom into (title, date) entries
- prepare_headlines auto-detects feeds by content and parses them directly
- strip feeds./rss./moxie. subdomains so feeds collapse to the outlet domain
- add 7 verified RSS feeds (BBC, Guardian, Al Jazeera, WaPo, The Hill, Vox, CNBC)
- get_sources skips blank lines and # comments
- broaden excluded-phrase list (skip links, share/follow, newsletter, utility)