Add pre commit hook for copyright update

hooks/pre-commit

@@ -0,0 +1,43 @@
+#!/bin/bash
+# Pre-commit hook to update copyright headers
+
+# Get the root directory of the git repository
+ROOT_DIR=$(git rev-parse --show-toplevel)
+
+# Check if update_copyright.sh exists and is executable
+if [ ! -x "$ROOT_DIR/scripts/update_copyright.sh" ]; then
+    echo "Warning: scripts/update_copyright.sh not found or not executable"
+    exit 1
+fi
+
+# Get list of staged C++ source files
+STAGED_FILES=$(git diff --cached --name-only --diff-filter=ACM | grep -E '\.(cpp|hpp|h|c|cc)$' || true)
+
+if [ -z "$STAGED_FILES" ]; then
+    # No C++ files staged, nothing to do
+    exit 0
+fi
+
+echo "Updating copyright headers for staged files..."
+
+# Update copyright for each staged file
+updated=0
+for file in $STAGED_FILES; do
+    if [ -f "$ROOT_DIR/$file" ]; then
+        # Run update_copyright.sh on the file
+        if "$ROOT_DIR/scripts/update_copyright.sh" "$ROOT_DIR/$file" > /dev/null 2>&1; then
+            # Re-stage the file if it was modified
+            git add "$ROOT_DIR/$file"
+            echo "  ✓ Updated: $file"
+            ((updated++))
+        fi
+    fi
+done
+
+if [ $updated -gt 0 ]; then
+    echo "Updated copyright headers in $updated file(s)"
+else
+    echo "No copyright headers needed updating"
+fi
+
+exit 0