feat: select text across bullets and delete it like a text editor; Ctrl+Z in tasks; notes and lists without emoji; custom done columns complete tasks

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

frontend/src/components/EmojiIconButton.tsx

@@ -1,16 +1,16 @@
 import React, { useRef, useState } from 'react';
+import { SmilePlus } from 'lucide-react';
 import { EmojiPickerModal } from '../features/workspace/EmojiPickerModal';
 
 interface EmojiIconButtonProps {
   value: string;
+  // "" = no icon (removed in the picker)
   onChange: (emoji: string) => void;
-  // Shown while no icon is chosen
-  fallback: string;
 }
 
 // Icon field of the create dialogs (note, task list, list): the emoji as a button that opens the same
-// picker as the icon of an open note (Doku/ui-patterns.md).
-export const EmojiIconButton: React.FC<EmojiIconButtonProps> = ({ value, onChange, fallback }) => {
+// picker as the icon of an open note, removing included (Doku/ui-patterns.md).
+export const EmojiIconButton: React.FC<EmojiIconButtonProps> = ({ value, onChange }) => {
   const buttonRef = useRef<HTMLButtonElement>(null);
   const [anchor, setAnchor] = useState<DOMRect | null>(null);
   return (
@@ -19,17 +19,16 @@ export const EmojiIconButton: React.FC<EmojiIconButtonProps> = ({ value, onChang
         ref={buttonRef}
         type="button"
         onClick={() => setAnchor((cur) => (cur ? null : buttonRef.current?.getBoundingClientRect() ?? null))}
-        title="Icon auswählen"
-        aria-label="Icon auswählen"
+        title={value ? 'Icon ändern' : 'Icon wählen'}
+        aria-label={value ? 'Icon ändern' : 'Icon wählen'}
         className="w-12 sm:w-10 h-11 sm:h-8 flex-shrink-0 flex items-center justify-center input-field text-lg sm:text-base leading-none cursor-pointer hover:border-strong"
       >
-        {value || fallback}
+        {value || <SmilePlus className="w-4 h-4 text-faint" strokeWidth={1.75} />}
       </button>
       {anchor && (
         <EmojiPickerModal
           currentIcon={value}
           anchor={anchor}
-          allowRemove={false}
           onSelectEmoji={(emoji) => {
             onChange(emoji);
             setAnchor(null);