Why Every AI Coding Agent Will Need Persistent Memory by 2027

Open your terminal. Start a session with any major AI coding tool — Cursor, GitHub Copilot, Windsurf, Claude Code. Do three hours of deep architectural work. Close the session. Open it again tomorrow. The agent has no idea what happened yesterday. Every session starts from absolute zero. Your entire working context — the refactoring decisions, the failed approaches, the architectural constraints you explained twice — gone. This is the defining limitation of AI coding tools in 2026. And the indus