feat: emoji picker in create dialogs; due date and priority right under a deepened task; no flicker on kanban drop

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/src/features/workspace/WorkspaceView.tsx

@@ -57,6 +57,7 @@ import { JournalCalendar } from './JournalCalendar';
 import { isJournalEnabled, readWorkspaceSession, todayISO, writeWorkspaceSession } from '../../lib/journal';
 import { MergeDialog } from './MergeDialog';
 import { CountBadge } from '../../components/CountBadge';
+import { EmojiIconButton } from '../../components/EmojiIconButton';
 import { extractHashtags } from '../../lib/hashtags';
 
 interface WorkspaceViewProps {
@@ -2968,14 +2969,7 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
           }}
         >
           <div className="flex items-center gap-1.5">
-            <input
-              type="text"
-              value={newNoteIcon}
-              onChange={(e) => setNewNoteIcon(e.target.value)}
-              aria-label="Emoji"
-              title="Icon (Emoji)"
-              className="w-12 sm:w-10 h-11 sm:h-8 text-center input-field text-base sm:text-sm"
-            />
+            <EmojiIconButton value={newNoteIcon} onChange={setNewNoteIcon} fallback="📝" />
             <input
               type="text"
               autoFocus