fix(ui): resolve 29 native UI/UX inconsistencies from folds design audit

Fixes N1–N94 findings from LOTUS_BUGS.md audit pass. Key changes:

- ProfileDecoration: raw <button> → folds <Button> for save/remove; remove
  undefined --accent-cyan var
- UserRoomProfile: textarea border uses color.SurfaceVariant.ContainerLine
  and config tokens instead of undefined --border-interactive var
- LotusToastContainer: z-index raised from 9997 → 10001 so toasts appear
  above Night Light overlay (9998) and modals (9999)
- Message.tsx: DeliveryStatus replaces Unicode glyphs with Icon components;
  MessageQuickReactions returns null instead of <span />; forward menu item
  gets correct size="100" on after icon
- AudioContent: speed chip variant/radii now matches Play chip (Secondary/300)
- ReadReceiptAvatars: pill border/radius/padding → folds config tokens;
  remove dead receipt-pill-btn className
- EventReaders: Header size 600→500; close button gets radii="300";
  borderBottom shorthand → borderBottomWidth token; remove raw fontSize
- General.tsx: selected background/seasonal picker border uses
  color.Primary.Main instead of color.Critical.Main (error red)
- RoomInsights: SectionHeader drops textTransform/letterSpacing/opacity;
  chart borderRadius → config tokens; remove raw fontSize:9;
  warning banner → SequenceCard
- RoomProfile.tsx: formatting toolbar raw <button> → folds <Button>;
  topic read-mode renders formatted_body via sanitizeCustomHtml
- MsgTypeRenderers: location Open button Chip→Button; opacity:0.65→priority
- UploadCardRenderer: caption raw <input> → folds <Input>
- VoiceMessageRecorder: replace undefined --bg-surface-variant/--tc-*
  vars with color.* tokens; replace bare <audio controls> with
  IconButton play/pause toggle
- App.tsx: mention highlight uses WCAG 2.1 relative luminance (gamma
  linearization) instead of simplified approximation; border now rgba
  semi-transparent instead of same color as background
- RoomNavItem: Mute MenuItem icon moved to before prop
- SearchFilters: HasLink chip variant="Success" outlined to match filter bar
- RoomViewHeader: Server Notice chip radii Pill→300; fix jotai import order
- Fix ESLint import/order errors in DeviceVerificationSetup, RoomTopicViewer,
  MediaGallery, and RoomViewHeader

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

src/app/features/room/MediaGallery.tsx

@@ -1,5 +1,4 @@
 import React, { useCallback, useEffect, useRef, useState } from 'react';
-import { useNearViewport } from '../../hooks/useNearViewport';
 import {
   Box,
   Button,
@@ -16,6 +15,7 @@ import {
   config,
 } from 'folds';
 import { EventType, MatrixClient, MatrixEvent, MsgType, Room } from 'matrix-js-sdk';
+import { useNearViewport } from '../../hooks/useNearViewport';
 import { IEncryptedFile, IImageInfo, IThumbnailContent } from '../../../types/matrix/common';
 import { useMatrixClient } from '../../hooks/useMatrixClient';
 import { useMediaAuthentication } from '../../hooks/useMediaAuthentication';
@@ -373,7 +373,14 @@ function GalleryTile({
   const mx = useMatrixClient();
   const tileRef = useRef<HTMLButtonElement>(null);
   const nearViewport = useNearViewport(tileRef, 300);
-  const media = useDecryptedMediaUrl(mx, mxcUrl, encInfo, useAuthentication, mimeType, nearViewport);
+  const media = useDecryptedMediaUrl(
+    mx,
+    mxcUrl,
+    encInfo,
+    useAuthentication,
+    mimeType,
+    nearViewport,
+  );
   const [hovered, setHovered] = useState(false);
   const relDate = formatRelativeDate(ts);
 
@@ -422,7 +429,13 @@ function GalleryTile({
         <img
           src={media.url}
           alt={body}
-          style={{ width: '100%', height: '100%', objectFit: 'cover', objectPosition: 'center top', display: 'block' }}
+          style={{
+            width: '100%',
+            height: '100%',
+            objectFit: 'cover',
+            objectPosition: 'center top',
+            display: 'block',
+          }}
         />
       )}