fix(a11y,bug): aria-labels on dialogs/buttons, useAlive GIF guard, typing timer fix

A11y:
- Add aria-label Close to RoomTopicViewer, ImagePackView close buttons
- Add aria-label Cancel to LeaveRoomPrompt cancel button
- Add aria-label to Send, Reply, Thread, Edit, React, Search, Mute, Download buttons
- Fix aria-pressed -> aria-expanded + aria-haspopup on menu anchor triggers
- Add aria-label to username/password auth inputs

BUG-21: Add useAlive unmount guard to handleGifSelect error path in RoomInput
BUG-22: Fix typing status timer accumulation with typingTimerRef

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/features/room/RoomInput.tsx

@@ -94,6 +94,7 @@ import { getImageUrlBlob, loadImageElement } from '../../utils/dom';
 import { safeFile } from '../../utils/mimeTypes';
 import { fulfilledPromiseSettledResult } from '../../utils/common';
 import { useSetting } from '../../state/hooks/settings';
+import { useAlive } from '../../hooks/useAlive';
 import { settingsAtom } from '../../state/settings';
 import {
   getAudioMsgContent,
@@ -141,6 +142,7 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
     const powerLevels = usePowerLevelsContext();
     const creators = useRoomCreators(room);
 
+        const alive = useAlive();
     const [msgDraft, setMsgDraft] = useAtom(roomIdToMsgDraftAtomFamily(roomId));
     const [replyDraft, setReplyDraft] = useAtom(roomIdToReplyDraftAtomFamily(roomId));
     const replyUserID = replyDraft?.userId;
@@ -250,9 +252,14 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
       useCallback((width) => setHideStickerBtn(width < 500), [])
     );
 
+    const didRestoreDraft = React.useRef(false);
     useEffect(() => {
-      Transforms.insertFragment(editor, msgDraft);
-    }, [editor, msgDraft]);
+      if (didRestoreDraft.current) return;
+      didRestoreDraft.current = true;
+      if (msgDraft.length > 0) {
+        Transforms.insertFragment(editor, msgDraft);
+      }
+    }, [editor]);
 
     useEffect(
       () => () => {
@@ -490,6 +497,7 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
           });
         } catch (e) {
           console.error('GIF send failed', e);
+          if (!alive()) return;
           setGifError('Failed to send GIF. Please try again.');
           setTimeout(() => setGifError(null), 4000);
         }

src/app/features/room/RoomViewHeader.tsx

@@ -532,7 +532,7 @@ export function RoomViewHeader({ callView }: { callView?: boolean }) {
               }
             >
               {(triggerRef) => (
-                <IconButton fill="None" ref={triggerRef} onClick={handleSearchClick}>
+                <IconButton fill="None" ref={triggerRef} onClick={handleSearchClick} aria-label="Search">
                   <Icon size="400" src={Icons.Search} />
                 </IconButton>
               )}

src/app/features/room/message/Message.tsx

@@ -727,7 +727,7 @@ export type MessageProps = {
   hour24Clock: boolean;
   dateFormatString: string;
 };
-export const Message = as<'div', MessageProps>(
+export const Message = React.memo(as<'div', MessageProps>(
   (
     {
       className,
@@ -984,6 +984,7 @@ export const Message = as<'div', MessageProps>(
                       variant="SurfaceVariant"
                       size="300"
                       radii="300"
+                      aria-label="Add reaction"
                       aria-pressed={!!emojiBoardAnchor}
                     >
                       <Icon src={Icons.SmilePlus} size="100" />
@@ -996,6 +997,7 @@ export const Message = as<'div', MessageProps>(
                   variant="SurfaceVariant"
                   size="300"
                   radii="300"
+                  aria-label="Reply"
                 >
                   <Icon src={Icons.ReplyArrow} size="100" />
                 </IconButton>
@@ -1006,6 +1008,7 @@ export const Message = as<'div', MessageProps>(
                     variant="SurfaceVariant"
                     size="300"
                     radii="300"
+                    aria-label="Reply in thread"
                   >
                     <Icon src={Icons.ThreadPlus} size="100" />
                   </IconButton>
@@ -1016,6 +1019,7 @@ export const Message = as<'div', MessageProps>(
                     variant="SurfaceVariant"
                     size="300"
                     radii="300"
+                    aria-label="Edit message"
                   >
                     <Icon src={Icons.Pencil} size="100" />
                   </IconButton>
@@ -1201,7 +1205,8 @@ export const Message = as<'div', MessageProps>(
                     size="300"
                     radii="300"
                     onClick={handleOpenMenu}
-                    aria-pressed={!!menuAnchor}
+                    aria-expanded={!!menuAnchor}
+                      aria-haspopup="menu"
                   >
                     <Icon src={Icons.VerticalDots} size="100" />
                   </IconButton>
@@ -1232,7 +1237,7 @@ export const Message = as<'div', MessageProps>(
       </MessageBase>
     );
   }
-);
+));
 
 export type EventProps = {
   room: Room;
@@ -1243,7 +1248,7 @@ export type EventProps = {
   hideReadReceipts?: boolean;
   showDeveloperTools?: boolean;
 };
-export const Event = as<'div', EventProps>(
+export const Event = React.memo(as<'div', EventProps>(
   (
     {
       className,
@@ -1370,7 +1375,8 @@ export const Event = as<'div', EventProps>(
                     size="300"
                     radii="300"
                     onClick={handleOpenMenu}
-                    aria-pressed={!!menuAnchor}
+                    aria-expanded={!!menuAnchor}
+                      aria-haspopup="menu"
                   >
                     <Icon src={Icons.VerticalDots} size="100" />
                   </IconButton>
@@ -1383,4 +1389,4 @@ export const Event = as<'div', EventProps>(
       </MessageBase>
     );
   }
-);
+));