Summary

Adds Cursor Cloud specific instructions to AGENTS.md to document the Linux development environment setup for future cloud agents.

What changed

• Added ## Cursor Cloud specific instructions section to AGENTS.md covering:
  • Environment limitations (Apple-only frameworks prevent swift build/swift test on Linux)
  • What works: linting (make lint, make format) with SwiftFormat 0.59.1 and SwiftLint 0.63.2
  • What doesn't work: building and testing (requires macOS + Xcode)
  • Linting tool setup notes (binaries are gitignored, downloaded automatically)
  • Key gotcha: bc dependency for scripts/lint.sh

Environment setup

• Swift: 6.0.3 toolchain (backwards compatible with Swift 5.9 tools-version)
• SwiftFormat: 0.59.1 (Linux x86_64 binary)
• SwiftLint: 0.63.2 (Linux AMD64 binary)
• OS: Ubuntu 24.04 x86_64

Tests run

• make lint — SwiftFormat and SwiftLint both execute successfully
• swift --version — confirms Swift 6.0.3 installed
• bin/swiftformat --version — confirms 0.59.1
• bin/swiftlint version — confirms 0.63.2