chore(claude): set some sane defaults

[denolfe]

Summary

Sets up Claude Code configuration for the Payload repository with automatic formatting hooks, permission presets, and improved documentation.

Changes

1. Added .claude/hooks/post-edit.sh

• Post-edit hook that auto-formats files after Edit/Write operations
• Runs sort-package-json for package.json
• Runs prettier for yml/json/md/mdx/js/jsx/ts/tsx files
• Runs markdownlint for markdown files
• Runs eslint --fix for JavaScript/TypeScript files

2. Added .claude/settings.json

• Configures post-edit hook to trigger on Edit/Write tool use
• Pre-allows common readonly commands (git, gh, pnpm, web tools) to reduce permission prompts

3. Updated CLAUDE.md

• Added missing packages to documentation (kv-redis, R2 storage adapter)
• Standardized all pnpm commands to use pnpm run prefix to match allowed commands in .claude/settings.json
• Clarified that Turbo commands should use pnpm turbo, not turbo directly

[github-actions]

🚀 This is included in version v3.63.0