Fix npm install: remove non-existent radix badge pkg; fix nullish coalescing syntax error; fix pydantic extra fields

frontend/package.json

@@ -38,8 +38,7 @@
     "@radix-ui/react-toast": "^1.2.1",
     "@radix-ui/react-dropdown-menu": "^2.1.1",
     "@radix-ui/react-slot": "^1.1.0",
-    "@radix-ui/react-separator": "^1.1.0",
-    "@radix-ui/react-badge": "^1.0.0"
+    "@radix-ui/react-separator": "^1.1.0"
   },
   "devDependencies": {
     "vite": "^5.4.8",

frontend/src/components/results/QueryFeedback.tsx

@@ -21,7 +21,7 @@ export function QueryFeedback({ queryId }: Props) {
     try {
       await apiFetch(`/api/query/${queryId}/feedback`, {
         method: 'POST',
-        body:   JSON.stringify({ sentiment, text: extraText ?? text || undefined }),
+        body:   JSON.stringify({ sentiment, text: (extraText ?? text) || undefined }),
       })
       setSent(sentiment)
       setShowFlag(false)