GitHub Copilot loads both this file and AGENTS.md. Treat AGENTS.md files as the source of truth — this file adds Copilot-specific notes only.
Language-specific conventions live in sub-directory AGENTS.md files:
crates/AGENTS.md — Rustpython/AGENTS.md — Python / PyO3cpp/AGENTS.md — C++ / cxxPath-scoped rules under ./instructions/ reference the sub-directory AGENTS.md files and are loaded automatically when files match their applyTo glob.
For code review behavior, see code-review.instructions.md.
For everything else — build commands, testing, PR rules — see AGENTS.md.