add reduce motion toggle and bump to v1.0.1

Add in-app reduce motion setting under Settings > Appearance so users
can disable animations without changing their OS preference. Applies a
.reduce-motion CSS class to kill all CSS transitions/animations and
wraps the app in MotionConfig to globally disable Framer Motion springs,
layout animations, and enter/exit transitions. Setting persists to disk.

Also removes leftover default Square*.png icons and bumps version to
1.0.1.

src/App.tsx

@@ -1,6 +1,6 @@
 import { useState, useEffect, useCallback } from "react";
 import { getCurrentWindow, LogicalSize, LogicalPosition } from "@tauri-apps/api/window";
-import { AnimatePresence, motion } from "framer-motion";
+import { AnimatePresence, motion, MotionConfig } from "framer-motion";
 import { springs, fadeSlideLeft, fadeSlideRight } from "@/lib/motion";
 import { useAppStore } from "@/stores/app-store";
 import { useBoardStore } from "@/stores/board-store";
@@ -18,6 +18,7 @@ export default function App() {
   const initialized = useAppStore((s) => s.initialized);
   const init = useAppStore((s) => s.init);
   const view = useAppStore((s) => s.view);
+  const reduceMotion = useAppStore((s) => s.settings.reduceMotion);
 
   const [settingsOpen, setSettingsOpen] = useState(false);
   const [shortcutHelpOpen, setShortcutHelpOpen] = useState(false);
@@ -127,7 +128,7 @@ export default function App() {
   }
 
   return (
-    <>
+    <MotionConfig reducedMotion={reduceMotion ? "always" : "user"}>
       <AppShell>
         <AnimatePresence mode="wait">
           {view.type === "board-list" ? (
@@ -161,6 +162,6 @@ export default function App() {
       <SettingsDialog open={settingsOpen} onOpenChange={setSettingsOpen} />
       <ToastContainer />
       <ShortcutHelpModal open={shortcutHelpOpen} onOpenChange={setShortcutHelpOpen} />
-    </>
+    </MotionConfig>
   );
 }