style(autocomplete): Dawn popover with mono handles, a fleet row highlight and a violet self-mention chip

src/app/components/editor/autocomplete/AutocompleteMenu.css.tsx

@@ -1,5 +1,5 @@
 import { style } from '@vanilla-extract/css';
-import { DefaultReset, config } from 'folds';
+import { DefaultReset, color, config, toRem } from 'folds';
 
 export const AutocompleteMenuBase = style([
   DefaultReset,
@@ -19,17 +19,51 @@ export const AutocompleteMenuContainer = style([
   },
 ]);
 
+// Dawn popover shell — a single hairline-bordered panel that floats above the
+// composer, mirroring the cmdK result-list look (panel #181a20 + faint fleet ring).
 export const AutocompleteMenu = style([
   DefaultReset,
   {
-    maxHeight: '30vh',
+    maxHeight: '40vh',
     height: '100%',
     display: 'flex',
     flexDirection: 'column',
+    backgroundColor: color.SurfaceVariant.Container,
+    border: `${toRem(1)} solid rgba(255, 255, 255, 0.07)`,
+    borderRadius: config.radii.R400,
+    boxShadow: '0 30px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(149, 128, 255, 0.15)',
+    overflow: 'hidden',
   },
 ]);
 
+// UPPERCASE, letter-spaced, muted mono section label — replaces the folds Header.
 export const AutocompleteMenuHeader = style([
   DefaultReset,
-  { padding: `0 ${config.space.S300}`, flexShrink: 0 },
+  {
+    flexShrink: 0,
+    display: 'block',
+    padding: `${config.space.S200} ${config.space.S300} ${config.space.S100}`,
+    fontFamily: 'var(--font-mono)',
+    fontSize: toRem(10),
+    lineHeight: toRem(14),
+    fontWeight: config.fontWeight.W500,
+    letterSpacing: '0.12em',
+    textTransform: 'uppercase',
+    color: color.SurfaceVariant.OnContainer,
+    opacity: 0.5,
+  },
 ]);
+
+// JetBrains Mono technical handle (@user:server, #alias:server, !id, /command sig)
+// rendered at a muted tone inside an autocomplete row.
+export const AutocompleteMono = style({
+  fontFamily: 'var(--font-mono)',
+  opacity: 0.6,
+});
+
+// Fleet highlight for the first (Tab-target) row: faint violet wash + a 2px
+// fleet left-border. Purely visual — reflects the onTabPress 'first item' logic.
+export const AutocompleteActiveRow = style({
+  backgroundColor: 'rgba(149, 128, 255, 0.08)',
+  boxShadow: `inset ${toRem(2)} 0 0 0 ${color.Primary.Main}`,
+});

src/app/components/editor/autocomplete/AutocompleteMenu.tsx

@@ -1,7 +1,7 @@
 import React, { ReactNode } from 'react';
 import FocusTrap from 'focus-trap-react';
 import { isKeyHotkey } from 'is-hotkey';
-import { Header, Menu, Scroll, config } from 'folds';
+import { Menu, Scroll, config } from 'folds';
 
 import * as css from './AutocompleteMenu.css';
 import { preventScrollWithArrowKey, stopPropagation } from '../../../utils/keyboard';
@@ -38,9 +38,7 @@ export function AutocompleteMenu({ headerContent, requestClose, children }: Auto
           }}
         >
           <Menu className={css.AutocompleteMenu}>
-            <Header className={css.AutocompleteMenuHeader} size="400">
-              {headerContent}
-            </Header>
+            <span className={css.AutocompleteMenuHeader}>{headerContent}</span>
             <Scroll style={{ flexGrow: 1 }} onKeyDown={preventScrollWithArrowKey}>
               <div style={{ padding: config.space.S200 }}>{children}</div>
             </Scroll>

src/app/components/editor/autocomplete/EmoticonAutocomplete.tsx

@@ -2,9 +2,11 @@ import React, { KeyboardEvent as ReactKeyboardEvent, useEffect, useMemo } from '
 import { Editor } from 'slate';
 import { Box, MenuItem, Text, toRem } from 'folds';
 import { Room } from 'matrix-js-sdk';
+import { useTranslation } from 'react-i18next';
 
 import { AutocompleteQuery } from './autocompleteQuery';
 import { AutocompleteMenu } from './AutocompleteMenu';
+import * as css from './AutocompleteMenu.css';
 import { useMatrixClient } from '../../../hooks/useMatrixClient';
 import { UseAsyncSearchOptions, useAsyncSearch } from '../../../hooks/useAsyncSearch';
 import { onTabPress } from '../../../utils/keyboard';
@@ -42,6 +44,7 @@ export function EmoticonAutocomplete({
   query,
   requestClose,
 }: EmoticonAutocompleteProps) {
+  const { t } = useTranslation();
   const mx = useMatrixClient();
   const useAuthentication = useMediaAuthentication();
 
@@ -85,8 +88,8 @@ export function EmoticonAutocomplete({
   });
 
   return autoCompleteEmoticon.length === 0 ? null : (
-    <AutocompleteMenu headerContent={<Text size="L400">Emojis</Text>} requestClose={requestClose}>
-      {autoCompleteEmoticon.map((emoticon) => {
+    <AutocompleteMenu headerContent={t('Room.autocomplete_emojis')} requestClose={requestClose}>
+      {autoCompleteEmoticon.map((emoticon, index) => {
         const isCustomEmoji = 'url' in emoticon;
         const key = isCustomEmoji ? emoticon.url : emoticon.unicode;
         const customEmojiUrl = mxcUrlToHttp(mx, key, useAuthentication);
@@ -94,6 +97,7 @@ export function EmoticonAutocomplete({
         return (
           <MenuItem
             key={emoticon.shortcode + key}
+            className={index === 0 ? css.AutocompleteActiveRow : undefined}
             as="button"
             radii="300"
             onKeyDown={(evt: ReactKeyboardEvent<HTMLButtonElement>) =>
@@ -121,7 +125,7 @@ export function EmoticonAutocomplete({
               )
             }
           >
-            <Text style={{ flexGrow: 1 }} size="B400" truncate>
+            <Text className={css.AutocompleteMono} style={{ flexGrow: 1 }} size="B400" truncate>
               :{emoticon.shortcode}:
             </Text>
           </MenuItem>

src/app/components/editor/autocomplete/RoomMentionAutocomplete.tsx

@@ -3,12 +3,14 @@ import { Editor } from 'slate';
 import { Avatar, Icon, Icons, MenuItem, Text } from 'folds';
 import { JoinRule, MatrixClient } from 'matrix-js-sdk';
 import { useAtomValue } from 'jotai';
+import { useTranslation } from 'react-i18next';
 
 import { createMentionElement, moveCursor, replaceWithElement } from '../utils';
 import { getDirectRoomAvatarUrl } from '../../../utils/room';
 import { useMatrixClient } from '../../../hooks/useMatrixClient';
 import { AutocompleteQuery } from './autocompleteQuery';
 import { AutocompleteMenu } from './AutocompleteMenu';
+import * as css from './AutocompleteMenu.css';
 import { getMxIdServer, isRoomAlias } from '../../../utils/matrix';
 import { UseAsyncSearchOptions, useAsyncSearch } from '../../../hooks/useAsyncSearch';
 import { onTabPress } from '../../../utils/keyboard';
@@ -76,6 +78,7 @@ export function RoomMentionAutocomplete({
   query,
   requestClose,
 }: RoomMentionAutocompleteProps) {
+  const { t } = useTranslation();
   const mx = useMatrixClient();
   const mDirects = useAtomValue(mDirectAtom);
 
@@ -86,12 +89,12 @@ export function RoomMentionAutocomplete({
     useCallback(
       (rId) => {
         const r = mx.getRoom(rId);
-        if (!r) return 'Unknown Room';
+        if (!r) return t('Room.autocomplete_unknown_room');
         const alias = r.getCanonicalAlias();
         if (alias) return [r.name, alias];
         return r.name;
       },
-      [mx]
+      [mx, t]
     ),
     SEARCH_OPTIONS
   );
@@ -133,11 +136,11 @@ export function RoomMentionAutocomplete({
   });
 
   return (
-    <AutocompleteMenu headerContent={<Text size="L400">Rooms</Text>} requestClose={requestClose}>
+    <AutocompleteMenu headerContent={t('Room.autocomplete_rooms')} requestClose={requestClose}>
       {autoCompleteRoomIds.length === 0 ? (
         <UnknownRoomMentionItem query={query} handleAutocomplete={handleAutocomplete} />
       ) : (
-        autoCompleteRoomIds.map((rId) => {
+        autoCompleteRoomIds.map((rId, index) => {
           const room = mx.getRoom(rId);
           if (!room) return null;
           const dm = mDirects.has(room.roomId);
@@ -147,6 +150,7 @@ export function RoomMentionAutocomplete({
           return (
             <MenuItem
               key={rId}
+              className={index === 0 ? css.AutocompleteActiveRow : undefined}
               as="button"
               radii="300"
               onKeyDown={(evt: ReactKeyboardEvent<HTMLButtonElement>) =>
@@ -154,7 +158,7 @@ export function RoomMentionAutocomplete({
               }
               onClick={handleSelect}
               after={
-                <Text size="T200" priority="300" truncate>
+                <Text className={css.AutocompleteMono} size="T200" priority="300" truncate>
                   {room.getCanonicalAlias() ?? ''}
                 </Text>
               }

src/app/components/editor/autocomplete/UserMentionAutocomplete.tsx

@@ -2,9 +2,11 @@ import React, { useEffect, KeyboardEvent as ReactKeyboardEvent } from 'react';
 import { Editor } from 'slate';
 import { Avatar, Icon, Icons, MenuItem, Text } from 'folds';
 import { MatrixClient, Room, RoomMember } from 'matrix-js-sdk';
+import { useTranslation } from 'react-i18next';
 
 import { AutocompleteQuery } from './autocompleteQuery';
 import { AutocompleteMenu } from './AutocompleteMenu';
+import * as css from './AutocompleteMenu.css';
 import { useRoomMembers } from '../../../hooks/useRoomMembers';
 import { useMatrixClient } from '../../../hooks/useMatrixClient';
 import {
@@ -90,6 +92,7 @@ export function UserMentionAutocomplete({
   query,
   requestClose,
 }: UserMentionAutocompleteProps) {
+  const { t } = useTranslation();
   const mx = useMatrixClient();
   const useAuthentication = useMediaAuthentication();
   const { roomId } = room;
@@ -137,7 +140,7 @@ export function UserMentionAutocomplete({
     getMemberDisplayName(room, member.userId) ?? getMxIdLocalPart(member.userId) ?? member.userId;
 
   return (
-    <AutocompleteMenu headerContent={<Text size="L400">Mentions</Text>} requestClose={requestClose}>
+    <AutocompleteMenu headerContent={t('Room.autocomplete_users')} requestClose={requestClose}>
       {query.text === 'room' && (
         <UnknownMentionItem
           userId={roomAliasOrId}
@@ -152,7 +155,7 @@ export function UserMentionAutocomplete({
           handleAutocomplete={handleAutocomplete}
         />
       ) : (
-        autoCompleteMembers.map((roomMember) => {
+        autoCompleteMembers.map((roomMember, index) => {
           const avatarMxcUrl = roomMember.getMxcAvatarUrl();
           const avatarUrl = avatarMxcUrl
             ? mx.mxcUrlToHttp(avatarMxcUrl, 32, 32, 'crop', undefined, false, useAuthentication)
@@ -160,6 +163,9 @@ export function UserMentionAutocomplete({
           return (
             <MenuItem
               key={roomMember.userId}
+              className={
+                index === 0 && query.text !== 'room' ? css.AutocompleteActiveRow : undefined
+              }
               as="button"
               radii="300"
               onKeyDown={(evt: ReactKeyboardEvent<HTMLButtonElement>) =>
@@ -167,7 +173,7 @@ export function UserMentionAutocomplete({
               }
               onClick={() => handleAutocomplete(roomMember.userId, getName(roomMember))}
               after={
-                <Text size="T200" priority="300" truncate>
+                <Text className={css.AutocompleteMono} size="T200" priority="300" truncate>
                   {roomMember.userId}
                 </Text>
               }

src/app/features/room/CommandAutocomplete.tsx

@@ -2,6 +2,7 @@ import React, { KeyboardEvent as ReactKeyboardEvent, useCallback, useEffect, use
 import { Editor } from 'slate';
 import { Box, config, MenuItem, Text } from 'folds';
 import { Room } from 'matrix-js-sdk';
+import { useTranslation } from 'react-i18next';
 import { Command, useCommands } from '../../hooks/useCommands';
 import {
   AutocompleteMenu,
@@ -10,6 +11,7 @@ import {
   moveCursor,
   replaceWithElement,
 } from '../../components/editor';
+import * as css from '../../components/editor/autocomplete/AutocompleteMenu.css';
 import { UseAsyncSearchOptions, useAsyncSearch } from '../../hooks/useAsyncSearch';
 import { useMatrixClient } from '../../hooks/useMatrixClient';
 import { useKeyDown } from '../../hooks/useKeyDown';
@@ -36,6 +38,7 @@ export function CommandAutocomplete({
   query,
   requestClose,
 }: CommandAutocompleteProps) {
+  const { t } = useTranslation();
   const mx = useMatrixClient();
   const commands = useCommands(mx, room);
   const commandNames = useMemo(() => Object.keys(commands) as Command[], [commands]);
@@ -71,17 +74,11 @@ export function CommandAutocomplete({
   });
 
   return autoCompleteNames.length === 0 ? null : (
-    <AutocompleteMenu
-      headerContent={
-        <Box grow="Yes" direction="Row" gap="200" justifyContent="SpaceBetween">
-          <Text size="L400">Commands</Text>
-        </Box>
-      }
-      requestClose={requestClose}
-    >
-      {autoCompleteNames.map((commandName) => (
+    <AutocompleteMenu headerContent={t('Room.autocomplete_commands')} requestClose={requestClose}>
+      {autoCompleteNames.map((commandName, index) => (
         <MenuItem
           key={commandName}
+          className={index === 0 ? css.AutocompleteActiveRow : undefined}
           as="button"
           radii="300"
           style={{ height: 'unset' }}
@@ -97,7 +94,7 @@ export function CommandAutocomplete({
             gap="100"
             justifyContent="SpaceBetween"
           >
-            <Text style={{ flexGrow: 1 }} size="B400" truncate>
+            <Text className={css.AutocompleteMono} style={{ flexGrow: 1 }} size="B400" truncate>
               {`/${commandName}`}
             </Text>
             <Text truncate priority="300" size="T200">

src/app/styles/CustomHtml.css.ts

@@ -147,9 +147,9 @@ export const Mention = recipe({
   base: [
     DefaultReset,
     {
-      backgroundColor: color.SurfaceVariant.Container,
-      color: color.SurfaceVariant.OnContainer,
-      boxShadow: `0 0 0 ${config.borderWidth.B300} ${color.SurfaceVariant.ContainerLine}`,
+      // Flat Dawn pill — violet-tinted fill + lavender text, no boxShadow ring.
+      backgroundColor: 'rgba(149, 128, 255, 0.12)',
+      color: color.Primary.MainHover,
       padding: `0 ${toRem(2)}`,
       borderRadius: config.radii.R300,
       fontWeight: config.fontWeight.W500,
@@ -158,14 +158,14 @@ export const Mention = recipe({
   variants: {
     highlight: {
       true: {
-        backgroundColor: color.Success.Container,
-        color: color.Success.OnContainer,
-        boxShadow: `0 0 0 ${config.borderWidth.B300} ${color.Success.ContainerLine}`,
+        // Self-mention reads as the fleet brand accent (not green status).
+        backgroundColor: color.Primary.Container,
+        color: color.Primary.OnContainer,
       },
     },
     focus: {
       true: {
-        boxShadow: `0 0 0 ${config.borderWidth.B300} ${color.SurfaceVariant.OnContainer}`,
+        boxShadow: `0 0 0 ${config.borderWidth.B300} ${color.Primary.Main}`,
       },
     },
   },