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AGENTS.md

@@ -1,5 +1,21 @@
 # Repository instructions
 
+## Required pre-commit gates
+
+Run every gate below from the repository root before committing. Every command
+must succeed; do not commit code that is unformatted, fails Clippy, or compiles
+with warnings.
+
+```sh
+cargo fmt --all -- --check
+RUSTFLAGS="-D warnings" cargo check --workspace --all-targets
+cargo clippy --workspace --all-targets -- -D warnings
+cargo test --workspace
+```
+
+Do not weaken or skip these gates to make a commit pass. Fix the underlying
+warning, lint, formatting issue, or test failure.
+
 ## iOS simulator build and deployment
 
 This Apple Silicon project builds the simulator app for `arm64`. Do not disable