fix: double config path, stale service worker, empty op-name log

- main.go: DOCKER_PATH=/config + /config.json (was /config/config.json)
- vite.config.ts: skipWaiting+clientsClaim forces new SW immediately;
  navigateFallback: null prevents SW from serving stale index.html;
  globPatterns excludes HTML so navigation always hits the network
- server.go: gqlOpName handles shorthand { field } syntax

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/internal/graph/server.go

@@ -253,13 +253,18 @@ func writeGQLError(w http.ResponseWriter, msg string) {
 
 func gqlOpName(query string) string {
 	q := strings.TrimSpace(query)
-	if strings.HasPrefix(q, "mutation") {
-		return "mutation " + firstWord(q[len("mutation"):])
+	switch {
+	case strings.HasPrefix(q, "mutation"):
+		return "mutation " + firstWord(strings.TrimSpace(q[len("mutation"):]))
+	case strings.HasPrefix(q, "query"):
+		return "query " + firstWord(strings.TrimSpace(q[len("query"):]))
+	case strings.HasPrefix(q, "{"):
+		// Shorthand query: extract first field name from { field ... }
+		inner := strings.TrimSpace(q[1:])
+		return "query {" + firstWord(inner) + "...}"
+	default:
+		return firstWord(q)
 	}
-	if strings.HasPrefix(q, "query") {
-		return "query " + firstWord(q[len("query"):])
-	}
-	return firstWord(q)
 }
 
 func firstWord(s string) string {