Update project dependencies and configurations; remove deprecated package settings and enhance legacy build support

- Upgrade package manager to pnpm@11.5.2 and remove patched dependencies from package.json.
- Update pnpm-lock.yaml to reflect new dependency versions and remove obsolete entries.
- Refactor Vite configuration to improve legacy build handling, including new plugins for legacy CSS management.
- Remove unused client/index.html file and adjust paths in Vite config for better project structure.
- Enhance DesktopAIShell and EQPage components to support legacy build conditions and improve loading states for raw curves.

client/src/pages/Home.tsx

@@ -135,7 +135,7 @@ function IOSToggle({ checked, onChange }: { checked: boolean; onChange: (v: bool
 
 // ── List row ──
 function ListRow({
-  icon, label, value, onClick, toggle, checked, onToggle, thumbnailSrc,
+  icon, label, value, onClick, toggle, checked, onToggle, thumbnail,
 }: {
   icon: React.ReactNode;
   label: string;
@@ -144,8 +144,7 @@ function ListRow({
   toggle?: boolean;
   checked?: boolean;
   onToggle?: (v: boolean) => void;
-  /** Optional small thumbnail shown between value text and chevron. */
-  thumbnailSrc?: string;
+  thumbnail?: string;
 }) {
   return (
     <div className="ios-list-row cursor-pointer" onClick={onClick}>
@@ -159,13 +158,12 @@ function ListRow({
       {toggle ? (
         <IOSToggle checked={!!checked} onChange={onToggle ?? (() => {})} />
       ) : (
-        <div className="flex items-center gap-1.5">
-          {thumbnailSrc && (
+        <div className="flex items-center gap-1">
+          {thumbnail && (
             <img
-              src={thumbnailSrc}
-              alt=""
-              className="w-16 h-12 rounded-[8px] object-cover flex-shrink-0"
-              style={{ border: "1px solid rgba(255,255,255,0.12)" }}
+              src={thumbnail}
+              alt={value ?? label}
+              className="h-8 w-14 object-contain rounded bg-black/20 border border-white/10"
             />
           )}
           {value && <span className="ios-row-value">{value}</span>}
@@ -883,7 +881,7 @@ export default function Home() {
             icon={<Gauge size={16} />}
             label={homeText.vu ?? "VU表"}
             value={vuLabel}
-            thumbnailSrc={`${import.meta.env.BASE_URL}vu/vu${(ds.vu ?? 0) + 1}.png`}
+            thumbnail={`${import.meta.env.BASE_URL}vu/vu${(ds.vu ?? 0) + 1}.png`}
             onClick={() => setLocation("/vu")}
           />
           <ListRow