Use supabase-postgres-best-practices to help AI programming assistants master Postgres skills

### 翻译结果： Introduce the Agent Skill `supabase-postgres-best-practices` maintained by Supabase: A tool designed for platforms such as Cursor and Claude Code, it restricts AI when writing SQL, modifying tables and troubleshooting performance based on eight priority rules covering query performance, connection management, RLS, schema and other aspects. The article verifies the official installation commands, rule structure and typical correct and incorrect examples, and explains how it cooperates with Supabase MCP.