Add three-stage cross-domain news research and reading briefings

Group original news into tagged fact packages, review each package with evidence and read-only research, and build complete 72-hour reading lists with independent model selections.

Add paused RSS/Atom subscriptions, news-scoped Skills, versioned analysis records, and locked deployment support for SearXNG. Preserve original news and keep live migration and legacy AI cleanup separately authorized.

Validate with 604 backend tests, 49 frontend tests, 19 CI control tests, lint, type checks, production build, and disposable PostgreSQL migration and three-stage smoke checks.

backend/src/alphapulse/api/news.py

@@ -15,7 +15,7 @@ from alphapulse.core.db import get_session
 from alphapulse.core.redis import redis
 from alphapulse.crawler.events import NEWS_CHANNEL
 from alphapulse.models import NewsItem, NewsRevision
-from alphapulse.models.risk import RiskAnalysis
+from alphapulse.models.risk import ArticleAnalysis, NewsSummary, SummaryArticle
 
 router = APIRouter(prefix="/api/news", tags=["news"], dependencies=[Depends(require_admin)])
 
@@ -120,17 +120,24 @@ async def list_news(
         conditions.append(NewsItem.id.in_(ids))
     total = await session.scalar(select(func.count()).select_from(NewsItem).where(*conditions))
     rows = (await session.execute(
-        select(NewsItem, func.left(NewsItem.content_text, EXCERPT_LENGTH).label("excerpt"), RiskAnalysis)
-        .outerjoin(RiskAnalysis, (RiskAnalysis.news_id == NewsItem.id) & (RiskAnalysis.content_hash == NewsItem.content_hash))
+        select(NewsItem, func.left(NewsItem.content_text, EXCERPT_LENGTH).label("excerpt"), ArticleAnalysis)
+        .outerjoin(ArticleAnalysis, (ArticleAnalysis.news_id == NewsItem.id) & (ArticleAnalysis.content_hash == NewsItem.content_hash))
         .where(*conditions)
         .order_by(NewsItem.published_at.desc(), NewsItem.id.desc())
         .offset((page - 1) * limit)
         .limit(limit)
     )).all()
 
-    items = [NewsBrief.model_validate({**news.__dict__, "excerpt": excerpt,
-        "risk": {**(analysis.result or {}), "state": analysis.state} if analysis else None})
-        for news, excerpt, analysis in rows]
+    items = []
+    for news, excerpt, analysis in rows:
+        summaries = (await session.scalars(select(NewsSummary).join(SummaryArticle).where(
+            SummaryArticle.analysis_id == analysis.id, NewsSummary.result.is_not(None)).order_by(NewsSummary.stars.desc()))).all() if analysis else []
+        risk = None
+        if analysis:
+            risk = {'state': 'pending' if analysis.state == 'done' else analysis.state}
+            if summaries:
+                risk = {**summaries[0].result, 'stars': summaries[0].stars, 'state': 'done'}
+        items.append(NewsBrief.model_validate({**news.__dict__, 'excerpt': excerpt, 'risk': risk}))
     return success(NewsPage(items=items, total=total))