Build a personalized news digest web app. Core features: 1. Onboarding flow where users pick 5 to 10 topics and rate preferred sources. 2. An ingestion job that pulls public RSS feeds and free news APIs every 30 minutes and stores articles. 3. An AI pipeline that deduplicates stories, clusters related coverage, and writes a 2 to 3 sentence summary per story. 4. A daily digest page grouped by topic, plus an optional morning email version. 5. Preference sliders that let users tune their mix (more hard news, less opinion, fewer sports, and so on). 6. Save and bookmark tools plus a 'more like this' button that adjusts topic weights. 7. Clear publisher attribution with links to the original article on every story. 8. An admin panel to add, remove, or pause sources and review flagged summaries.