feat: Introduce global config primitive

config/config.go

@@ -0,0 +1,32 @@
+package config
+
+import (
+	"context"
+	"fmt"
+)
+
+type configKey struct{}
+type contextValue struct {
+	Config Config
+}
+
+// Global configuration
+type Config struct {
+	Transitive      bool
+	TransitiveDepth int
+}
+
+// Inject config into context while protecting against context poisoning
+func (c Config) Inject(ctx context.Context) context.Context {
+	return context.WithValue(ctx, configKey{}, &contextValue{Config: c})
+}
+
+// Extract config from context
+func FromContext(ctx context.Context) (Config, error) {
+	c, ok := ctx.Value(configKey{}).(*contextValue)
+	if !ok {
+		return Config{}, fmt.Errorf("config not found in context")
+	}
+
+	return c.Config, nil
+}