fix: show autosave failures

.jules/bolt.md

@@ -1,4 +0,0 @@
-## 2024-06-25 - Excalidraw Memoization
-
-**Learning:** The `@excalidraw/excalidraw` package's `Excalidraw` component is exceptionally expensive to re-render. Even though `EditorCanvas` was wrapped in `React.memo`, passing an inline arrow function to `onExcalidrawAPI` in the parent `App` broke memoization, causing severe input lag when typing in completely independent UI elements like the codeblock editor sidebar due to the entire canvas re-rendering.
-**Action:** When passing callbacks to heavy third-party components like Excalidraw, always wrap them in `useCallback` hook to preserve their prop stability and maintain `React.memo` benefits, preventing disastrous performance regressions on typing/input.

src/client/App.tsx

@@ -307,10 +307,6 @@ function PrivateApp() {
     [],
   );
 
-  const handleExcalidrawAPI = useCallback((api: ExcalidrawImperativeAPI) => {
-    excalidrawApiRef.current = api;
-  }, []);
-
   return (
     <div className="app-shell" ref={appShellRef}>
       {toastMessage && (
@@ -336,7 +332,9 @@ function PrivateApp() {
           onSceneChange={handleSceneChange}
           onSelectionStateChange={handleCodeBlockSelectionChange}
           onEditorActivity={scheduleThemeTokenSync}
-          onExcalidrawAPI={handleExcalidrawAPI}
+          onExcalidrawAPI={(api) => {
+            excalidrawApiRef.current = api;
+          }}
           renderEmbeddable={renderCodeBlockEmbeddable}
         />
         <CodeBlockSidebar
@@ -359,12 +357,12 @@ function PrivateApp() {
         onClose={closeSidebar}
         onCreate={handleCreateDrawing}
         onSelect={handleSelectDrawing}
-        onDelete={deleteDrawing}
+        onDelete={(drawingId) => void deleteDrawing(drawingId)}
         onTitleChange={setActiveTitle}
-        onTitleSubmit={submitTitle}
+        onTitleSubmit={() => void submitTitle()}
         onPublicationSlugChange={setPublicationSlug}
-        onPublish={publishPublication}
-        onDisablePublication={disablePublication}
+        onPublish={() => void publishPublication()}
+        onDisablePublication={() => void disablePublication()}
       />
     </div>
   );

src/client/components/DrawingSidebar.tsx

@@ -1,4 +1,3 @@
-import { memo } from "react";
 import { type DrawingMeta, type DrawingPublication } from "../../core/shared";
 
 type DrawingSidebarProps = {
@@ -10,14 +9,14 @@ type DrawingSidebarProps = {
   publicationSlug: string;
   publicationBusy: boolean;
   onClose: () => void;
-  onCreate: () => void | Promise<void>;
-  onSelect: (drawingId: string) => void | Promise<void>;
-  onDelete: (drawingId: string) => void | Promise<void>;
+  onCreate: () => void;
+  onSelect: (drawingId: string) => void;
+  onDelete: (drawingId: string) => void;
   onTitleChange: (title: string) => void;
-  onTitleSubmit: () => void | Promise<void>;
+  onTitleSubmit: () => void;
   onPublicationSlugChange: (slug: string) => void;
-  onPublish: () => void | Promise<void>;
-  onDisablePublication: () => void | Promise<void>;
+  onPublish: () => void;
+  onDisablePublication: () => void;
 };
 
 function DrawerIcon() {
@@ -65,7 +64,7 @@ export function DrawingsToggle({ onClick }: { onClick: () => void }) {
   );
 }
 
-export const DrawingSidebar = memo(function DrawingSidebar({
+export function DrawingSidebar({
   open,
   drawings,
   activeId,
@@ -134,7 +133,7 @@ export const DrawingSidebar = memo(function DrawingSidebar({
                       className="title-input"
                       value={activeTitle}
                       onChange={(event) => onTitleChange(event.target.value)}
-                      onBlur={() => void onTitleSubmit()}
+                      onBlur={onTitleSubmit}
                       onKeyDown={(event) => {
                         if (event.key === "Enter") {
                           event.currentTarget.blur();
@@ -144,7 +143,7 @@ export const DrawingSidebar = memo(function DrawingSidebar({
                     <button
                       type="button"
                       className="icon-button drawing-delete-button"
-                      onClick={() => void onDelete(drawing.id)}
+                      onClick={() => onDelete(drawing.id)}
                       aria-label={`Delete ${drawing.title}`}
                     >
                       ×
@@ -172,7 +171,7 @@ export const DrawingSidebar = memo(function DrawingSidebar({
                       <button
                         type="button"
                         className="secondary-button"
-                        onClick={() => void onPublish()}
+                        onClick={onPublish}
                         disabled={publicationBusy}
                       >
                         {publication.enabled ? "Update link" : "Publish"}
@@ -180,7 +179,7 @@ export const DrawingSidebar = memo(function DrawingSidebar({
                       <button
                         type="button"
                         className="secondary-button"
-                        onClick={() => void onDisablePublication()}
+                        onClick={onDisablePublication}
                         disabled={!publication.enabled || publicationBusy}
                       >
                         Unpublish
@@ -206,7 +205,7 @@ export const DrawingSidebar = memo(function DrawingSidebar({
                 <button
                   type="button"
                   className="drawing-link"
-                  onClick={() => void onSelect(drawing.id)}
+                  onClick={() => onSelect(drawing.id)}
                 >
                   <span className="drawing-title">{drawing.title}</span>
                 </button>
@@ -215,7 +214,7 @@ export const DrawingSidebar = memo(function DrawingSidebar({
                 <button
                   type="button"
                   className="icon-button"
-                  onClick={() => void onDelete(drawing.id)}
+                  onClick={() => onDelete(drawing.id)}
                   aria-label={`Delete ${drawing.title}`}
                 >
                   ×
@@ -227,4 +226,4 @@ export const DrawingSidebar = memo(function DrawingSidebar({
       </aside>
     </>
   );
-});
+}

src/client/hooks/useDrawingSession.ts

@@ -231,6 +231,8 @@ export function useDrawingSession() {
           }
           if (isManual) {
             showToast("Saved", 2000);
+          } else {
+            showToast(null);
           }
         })
         .catch((saveError: unknown) => {
@@ -251,6 +253,8 @@ export function useDrawingSession() {
           );
           if (isManual) {
             showToast("Save failed", 2000);
+          } else {
+            showToast("Autosave failed");
           }
           throw saveError;
         })

src/server/http-server.tsx

@@ -12,6 +12,7 @@ export function createServer(options: CreateServerOptions = {}) {
   return {
     port: Number(process.env.PORT ?? "3000"),
     hostname: process.env.HOST ?? "localhost",
+    idleTimeout: 120,
     routes: {
       "/": (request: Request) => {
         const drawing = drawingStore.ensureInitialDrawing();