Remove chat rate limit

packages/ui/src/ChatBubble.tsx

@@ -19,6 +19,32 @@ import {
 import { cn } from "./lib/utils";
 import { citationSectionLabel } from "./CitationCard";
 
+// Display-only patch, 2026-08-13: exactly 3 of 684 catalog entries have "Đ"/
+// "đ" in their canonical name (ingestion's slug generator maps every other
+// Vietnamese diacritic to its base Latin letter, but drops "Đ"/"đ" entirely
+// instead of mapping it to "D"/"d" — it is not a combining-mark decomposition
+// under Unicode NFKD, so a generic accent-strip silently loses it). Fixing
+// the underlying drug_id would mean re-keying every citation chunk_id built
+// from it in the already-loaded Qdrant corpus, so this only corrects the
+// header label shown to the user, not the data. Verified against the full
+// catalog (`ingestion/data/verified/drug_entities.json`): these are the only
+// 3 affected ids.
+const DRUG_ID_DISPLAY_OVERRIDES: Record<string, string> = {
+  giai_oc_to_uon_van_hap_phu_vac_xin_uon_van_hap_phu:
+    "GIẢI ĐỘC TỐ UỐN VÁN HẤP PHỤ (VẮC XIN UỐN VÁN HẤP PHỤ)",
+  khang_oc_to_bach_hau: "KHÁNG ĐỘC TỐ BẠCH HẦU",
+  thuoc_uong_bu_nuoc_va_ien_giai: "THUỐC UỐNG BÙ NƯỚC VÀ ĐIỆN GIẢI",
+};
+
+function formatResolvedDrugId(resolvedDrugId: string): string {
+  return resolvedDrugId
+    .split(",")
+    .map((id) => id.trim())
+    .filter(Boolean)
+    .map((id) => DRUG_ID_DISPLAY_OVERRIDES[id] ?? id.replace(/_/g, " ").toUpperCase())
+    .join(", ");
+}
+
 interface ChatBubbleProps {
   message: ChatMessage;
   // `allCitations` is THIS message's own citation list (`message.citations`)
@@ -256,7 +282,7 @@ export function ChatBubble({
             <BookOpen className="h-3.5 w-3.5" />
           </div>
           <span className="text-xs font-semibold text-txt-secondary">
-            {message.resolvedDrugId ? message.resolvedDrugId.replace(/_/g, " ").toUpperCase() : "Trợ lý Dược thư"}
+            {message.resolvedDrugId ? formatResolvedDrugId(message.resolvedDrugId) : "Trợ lý Dược thư"}
           </span>
           {message.decision === "answerable" && message.grounded !== false && (
             <span className="inline-flex items-center gap-1 text-[0.68rem] font-medium text-status-success">