Bridge local AI coding agents (Claude Code, Cursor, Gemini CLI) to messaging platforms (Feishu, DingTalk, Slack, Telegram, Discord, LINE, WeChat Work)

The most expensive bug in AI-assisted building is shipping the wrong thing, well. A drop-in CLAUDE.md / AGENTS.md for PM + eng teams using Claude Code, Cursor, or Codex: 7 principles for problem framing, scope, tradeoffs, and outcome measurement. Built on @karpathy's observations.