chore: tunnel recorder & slight refactor

store/context.go

@@ -0,0 +1,18 @@
+package store
+
+import (
+	"context"
+)
+
+type contextKey struct{}
+
+var recordIDKey = contextKey{}
+
+func withRecord(ctx context.Context, rec *TunnelRecord) context.Context {
+	return context.WithValue(ctx, recordIDKey, rec)
+}
+
+func getRecord(ctx context.Context) (*TunnelRecord, bool) {
+	id, ok := ctx.Value(recordIDKey).(*TunnelRecord)
+	return id, ok
+}