Merge pull request #13 from stlab/sean-parent/if-and-short-circuit

Add if/else/else-if expressions and short-circuit &&/|| operators

Author: sean-parent

.githooks/pre-commit

@@ -0,0 +1,5 @@
+#!/bin/sh
+if ! cargo fmt --all --check; then
+    echo "Formatting check failed. Run 'cargo fmt --all' and re-stage the changes."
+    exit 1
+fi

CLAUDE.md

@@ -2,9 +2,20 @@
 
 This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
 
+## Setup
+
+After cloning, activate the shared git hooks (one-time):
+
+```bash
+git config core.hooksPath .githooks
+```
+
 ## Commands
 
 ```bash
+# Format (required before every commit; enforced by pre-commit hook)
+cargo fmt --all
+
 # Build
 cargo build --workspace