Replace placeholder Cody prompt with actual prompts from sourcegraph/cody repo including agentic mode, chat preamble, default preamble, codebase context addendum, and legacy preamble versions. https://claude.ai/code/session_01LsnvBa7HwF5hs99VZbgLGj
Add prompts for GitHub Copilot, ChatGPT (with tools), Grok, Amazon Q Developer, JetBrains AI, Mistral Le Chat, and open source tools: Aider, Continue.dev, Cody (Sourcegraph), and OpenHands. Update README with comprehensive tools index. https://claude.ai/code/session_01LsnvBa7HwF5hs99VZbgLGj
