feat: reaction TDS styling, debounce read receipts, Escape to skip boot, type fixes

- lotus-terminal.css.ts: add reaction chip styles for dark + light TDS modes
  (cyan border/bg for unselected, orange accent for own/pressed reactions)
- useRoomReadPositions: debounce receipt handler at 150ms (M-3)
- lotus-boot.ts: Escape key skips boot animation (I-3)
- RoomInput.tsx: replace (uploadRes as any) with typed assertion (M-7)
- CallEmbedProvider: call mention detection, audio cleanup, display name (C-1, C-2, M-5)
- EventReaders: timestamps in seen-by modal, filter self, TDS styling
- ReadReceiptAvatars: StackedAvatar pill, TDS visual treatment
- chatBackground: add waves/neon/aurora backgrounds
- RoomView: auto-apply tactical bg when TDS active and bg is none
- settings: extend ChatBackground union type

src/app/components/event-readers/EventReaders.tsx

@@ -16,7 +16,7 @@ import {
 import { Room } from 'matrix-js-sdk';
 import { useRoomEventReaders } from '../../hooks/useRoomEventReaders';
 import { getMemberDisplayName } from '../../utils/room';
-import { getMxIdLocalPart } from '../../utils/matrix';
+import { getMxIdLocalPart, mxcUrlToHttp } from '../../utils/matrix';
 import * as css from './EventReaders.css';
 import { useMatrixClient } from '../../hooks/useMatrixClient';
 import { UserAvatar } from '../user-avatar';
@@ -24,6 +24,19 @@ import { useMediaAuthentication } from '../../hooks/useMediaAuthentication';
 import { useOpenUserRoomProfile } from '../../state/hooks/userRoomProfile';
 import { useSpaceOptionally } from '../../hooks/useSpace';
 import { getMouseEventCords } from '../../utils/dom';
+import { useSetting } from '../../state/hooks/settings';
+import { settingsAtom } from '../../state/settings';
+import { today, yesterday, timeHourMinute, timeMon, timeDay, timeYear } from '../../utils/time';
+
+function formatReadTs(ts: number, hour24Clock: boolean): string {
+  const timeStr = timeHourMinute(ts, hour24Clock);
+  if (today(ts)) return `Today at ${timeStr}`;
+  if (yesterday(ts)) return `Yesterday at ${timeStr}`;
+  const sameYear = timeYear(ts) === timeYear(Date.now());
+  return sameYear
+    ? `${timeMon(ts)} ${timeDay(ts)} at ${timeStr}`
+    : `${timeMon(ts)} ${timeDay(ts)} ${timeYear(ts)} at ${timeStr}`;
+}
 
 export type EventReadersProps = {
   room: Room;
@@ -34,9 +47,12 @@ export const EventReaders = as<'div', EventReadersProps>(
   ({ className, room, eventId, requestClose, ...props }, ref) => {
     const mx = useMatrixClient();
     const useAuthentication = useMediaAuthentication();
-    const latestEventReaders = useRoomEventReaders(room, eventId);
+    const myUserId = mx.getUserId();
+    const latestEventReaders = useRoomEventReaders(room, eventId).filter((id) => id !== myUserId);
     const openProfile = useOpenUserRoomProfile();
     const space = useSpaceOptionally();
+    const [hour24Clock] = useSetting(settingsAtom, 'hour24Clock');
+    const [lotusTerminal] = useSetting(settingsAtom, 'lotusTerminal');
 
     const getName = (userId: string) =>
       getMemberDisplayName(room, userId) ?? getMxIdLocalPart(userId) ?? userId;
@@ -48,9 +64,14 @@ export const EventReaders = as<'div', EventReadersProps>(
         {...props}
         ref={ref}
       >
-        <Header className={css.Header} variant="Surface" size="600">
+        <Header
+          className={css.Header}
+          variant="Surface"
+          size="600"
+          style={lotusTerminal ? { borderBottom: '1px solid rgba(0,212,255,0.30)', boxShadow: '0 2px 12px rgba(0,212,255,0.08)' } : undefined}
+        >
           <Box grow="Yes">
-            <Text size="H3">Seen by</Text>
+            <Text size="H3" style={lotusTerminal ? { color: '#00D4FF', textShadow: '0 0 6px rgba(0,212,255,0.45)', letterSpacing: '0.05em' } : undefined}>Seen by</Text>
           </Box>
           <IconButton size="300" onClick={requestClose}>
             <Icon src={Icons.Cross} />
@@ -63,16 +84,9 @@ export const EventReaders = as<'div', EventReadersProps>(
                 const name = getName(readerId);
                 const avatarMxcUrl = room.getMember(readerId)?.getMxcAvatarUrl();
                 const avatarUrl = avatarMxcUrl
-                  ? mx.mxcUrlToHttp(
-                      avatarMxcUrl,
-                      100,
-                      100,
-                      'crop',
-                      undefined,
-                      false,
-                      useAuthentication
-                    )
+                  ? mxcUrlToHttp(mx, avatarMxcUrl, useAuthentication, 100, 100, 'crop') ?? undefined
                   : undefined;
+                const receiptTs = room.getReadReceiptForUserId(readerId)?.data.ts;
 
                 return (
                   <MenuItem
@@ -92,16 +106,28 @@ export const EventReaders = as<'div', EventReadersProps>(
                       <Avatar size="200">
                         <UserAvatar
                           userId={readerId}
-                          src={avatarUrl ?? undefined}
+                          src={avatarUrl}
                           alt={name}
                           renderFallback={() => <Icon size="50" src={Icons.User} filled />}
                         />
                       </Avatar>
                     }
                   >
-                    <Text size="T400" truncate>
-                      {name}
-                    </Text>
+                    <Box direction="Column" grow="Yes">
+                      <Text size="T400" truncate>
+                        {name}
+                      </Text>
+                      {receiptTs !== undefined && (
+                        <Text
+                          size="T200"
+                          style={lotusTerminal
+                            ? { color: '#FFB300', textShadow: '0 0 6px #FFB300, 0 0 14px rgba(255,179,0,0.40)', fontSize: '0.72rem' }
+                            : { opacity: 0.6 }}
+                        >
+                          {formatReadTs(receiptTs, hour24Clock)}
+                        </Text>
+                      )}
+                    </Box>
                   </MenuItem>
                 );
               })}