fix(compare-form): accept username state as props

The PR call site lifted username1/username2 and their setters into
HomePageInner so URL searchParams could drive the form, but the
component itself still owned its own useState pair. That broke the
build and meant the prop-passed values were ignored at runtime.

Move the four values into CompareFormProps, drop the internal
useState, and let parent-supplied swapUsers/reset handle clearing
and swapping. The local placeholder defaults ("pbiggar",
"CoralineAda") are gone; the parent now seeds initial state from
searchParams.

Author: mvanhorn

components/compare-form.tsx

@@ -1,4 +1,4 @@
-import { useState, useRef, useEffect } from "react";
+import { useRef, useEffect } from "react";
 import { Button } from "./ui/button";
 import { ArrowLeftRight, RefreshCw } from "lucide-react";
 import {
@@ -12,6 +12,10 @@ import { Alert, AlertDescription } from "./ui/alert";
 import { useTranslation } from "./language-provider";
 
 type CompareFormProps = {
+  username1: string;
+  username2: string;
+  setUsername1: (value: string) => void;
+  setUsername2: (value: string) => void;
   data?: boolean;
   onSubmit: (u1: string, u2: string) => void;
   loading?: boolean;
@@ -21,16 +25,17 @@ type CompareFormProps = {
 };
 
 export function CompareForm({
+  username1,
+  username2,
+  setUsername1,
+  setUsername2,
   onSubmit,
-  data,
   loading,
   swapUsers,
   reset,
   error,
 }: CompareFormProps) {
   const { t } = useTranslation();
-  const [username1, setUsername1] = useState("pbiggar");
-  const [username2, setUsername2] = useState("CoralineAda");
   const firstInputRef = useRef<HTMLInputElement>(null);
 
   // Auto-focus first input on page load
@@ -42,14 +47,10 @@ export function CompareForm({
   const isEmpty = !username1.trim() && !username2.trim();
 
   const handleSwap = () => {
-    setUsername1(username2);
-    setUsername2(username1);
     if (swapUsers) swapUsers();
   };
 
   const handleReset = () => {
-    setUsername1("");
-    setUsername2("");
     if (reset) reset();
   };