fix(docs): lock both feedback buttons after a vote

Disable both thumbs-up/thumbs-down after the first click and short-circuit
duplicate handleFeedback calls so users cannot flip their vote and re-POST
to honk-ai's /api/feedback (which upserts).

Author: critesjosh

docs/src/components/AztecDocsWidget/Message.jsx

@@ -51,7 +51,7 @@ export function AssistantBody({
       <button
         type="button"
         onClick={() => onFeedback?.(kind)}
-        disabled={!onFeedback || active}
+        disabled={!onFeedback || !!feedback}
         title={label}
         aria-label={label}
         aria-pressed={active}
@@ -60,11 +60,9 @@ export function AssistantBody({
           height: 26,
           padding: 0,
           border: `1px solid ${isInk ? "rgba(242,238,225,0.2)" : "var(--azw-ink-tint-1)"}`,
-          background: active
-            ? accentColor
-            : "transparent",
+          background: active ? accentColor : "transparent",
           color: active ? "var(--azw-ink)" : dimmed ? panelFg2 : panelFg,
-          cursor: onFeedback && !active ? "pointer" : "default",
+          cursor: onFeedback && !feedback ? "pointer" : "default",
           display: "flex",
           alignItems: "center",
           justifyContent: "center",

docs/src/components/AztecDocsWidget/index.jsx

@@ -132,6 +132,7 @@ export default function AztecDocsWidget({
 
   async function handleFeedback(messageIndex, kind) {
     if (!conversationId) return;
+    if (feedbackByIndex[messageIndex]) return;
     setFeedbackByIndex((prev) => ({ ...prev, [messageIndex]: kind }));
     setFeedbackErrorsByIndex((prev) => {
       if (!prev[messageIndex]) return prev;