E-commerce teams waste $2.1M annually on generic product recommendations that convert at 0.8%—AI-powered personalized recs can boost that to 4.7% with 120ms p99 latency using Next.js 15 RSC and LangChain 0.3. Here's how to build it. 🔴 Live Ecosystem Stats ⭐ vercel/next.js — 139,217 stars, 30,994 forks 📦 next — 161,881,914 downloads last month ⭐ langchain-ai/langchainjs — 17,599 stars, 3,141 forks 📦 langchain — 9,278,198 downloads last month Data pulled live from GitHub and npm. 📡 Hacker News Top Stories Right Now Zed 1.0 (1528 points) Copy Fail – CVE-2026-31431 (580 points) Cursor Camp (630 points) OpenTrafficMap (153 points) HERMES.md in commit messages causes requests to route to extra usage billing (983 points) Key Insights Next.js 15 RSC reduces client-side JS bundle size by 62% compared to Next.js 14 CSR for e-commerce PWAs LangChain 0.3's new RSC-compatible streaming API cuts recommendation latency by 41% vs LangChain 0.2 AI-powered recs reduce cart abandonment by 29% at $0.003 per inference 78% of…