Get news feed

Rate limit: 60 requests per 60 seconds. This is a shared quota — the same budget is consumed by a group of related endpoints, so calling any of them reduces what is left for the others (you cannot call each at the full rate independently). Endpoints sharing this quota:

• GET /api/v1/feeds/following
• GET /api/v1/feeds/for-you
• GET /api/v1/feeds/instrument/{marketId}
• GET /api/v1/feeds/markets/{marketId}
• GET /api/v1/feeds/saved
• GET /api/v1/feeds/user/{userId}
• GET /api/v1/feeds/users/{userId}
• GET /api/v1/feeds/users/{userId}/pinned

Returns a ranked news feed for the authenticated user. Ranking method is resolved via A/B experiment and a configurable default.