feat: add GET /api/briefing/news unified news endpoint

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/fabledassistant/routes/briefing.py

@@ -322,3 +322,58 @@ async def delete_rss_reaction(item_id: int):
         await session.commit()
 
     return jsonify({"ok": True})
+
+
+@briefing_bp.route("/news", methods=["GET"])
+@_REQUIRE
+async def list_news():
+    """Return recent RSS articles with optional feed filter and pagination.
+
+    Query params:
+      days    — lookback window (default 2, max 90)
+      limit   — items per page (default 40, max 100)
+      offset  — pagination offset (default 0)
+      feed_id — optional integer filter by feed
+    """
+    from sqlalchemy import text as _text
+
+    days = min(int(request.args.get("days", 2)), 90)
+    limit = min(int(request.args.get("limit", 40)), 100)
+    offset = max(int(request.args.get("offset", 0)), 0)
+    feed_id = request.args.get("feed_id", type=int)
+
+    async with async_session() as session:
+        result = await session.execute(
+            _text("""
+                SELECT
+                    i.id, i.title, i.url, i.content, i.published_at,
+                    i.topics, f.title AS feed_title,
+                    r.reaction
+                FROM rss_items i
+                JOIN rss_feeds f ON f.id = i.feed_id
+                LEFT JOIN rss_item_reactions r
+                    ON r.rss_item_id = i.id AND r.user_id = :uid
+                WHERE f.user_id = :uid
+                  AND (:feed_id IS NULL OR f.id = :feed_id)
+                  AND i.published_at >= NOW() - make_interval(days => :days)
+                ORDER BY i.published_at DESC NULLS LAST
+                LIMIT :limit OFFSET :offset
+            """).bindparams(uid=g.user.id, days=days, limit=limit,
+                            offset=offset, feed_id=feed_id)
+        )
+        rows = result.mappings().all()
+
+    items = [
+        {
+            "id": r["id"],
+            "title": r["title"],
+            "url": r["url"],
+            "snippet": (r["content"] or "")[:300],
+            "published_at": r["published_at"].isoformat() if r["published_at"] else None,
+            "topics": r["topics"] or [],
+            "source": r["feed_title"],
+            "reaction": r["reaction"],
+        }
+        for r in rows
+    ]
+    return jsonify({"items": items, "offset": offset, "limit": limit})