feat: dagrunner, initial version

scripts/run_examples.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+set -e
+
+# Find all example files
+examples=$(find examples -name "*.rs" -type f 2>/dev/null | sed 's|examples/||; s|\.rs$||' | sort)
+
+if [ -z "$examples" ]; then
+    echo "No examples found in examples/ directory"
+    exit 0
+fi
+
+failed=0
+total=0
+
+echo "Running all examples..."
+echo
+
+for example in $examples; do
+    total=$((total + 1))
+    echo "[$total] Running example: $example"
+    
+    if cargo run --example "$example" --quiet; then
+        echo "✓ $example passed"
+    else
+        echo "✗ $example failed"
+        failed=$((failed + 1))
+    fi
+    echo
+done
+
+echo "================================"
+echo "Results: $((total - failed))/$total passed"
+
+if [ $failed -eq 0 ]; then
+    echo "All examples passed!"
+    exit 0
+else
+    echo "$failed example(s) failed"
+    # Cap at 255 (max exit code)
+    [ $failed -gt 255 ] && failed=255
+    exit $failed
+fi