feat: transform mobile FAB into quick action menu

FAB now opens a fan menu with 4 options instead of directly adding tasks:
- Task: opens the existing bottom sheet for quick task entry
- Event: opens the calendar event modal
- Focus: enters focus mode
- Search: opens search modal

FAB rotates to X when menu is open, backdrop dismisses on tap.
Each menu item has a colored icon bubble with label.

v1.41.0

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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "my-weekly-todo-list",
-  "version": "1.40.1",
+  "version": "1.41.0",
   "description": "A web-based weekly task management application that organizes to-dos and calendar events in a single, intuitive weekly view",
   "main": "index.js",
   "scripts": {

src/app/globals.css

@@ -4062,6 +4062,64 @@ h3 {
   transform: scale(0.9);
   box-shadow: 0 2px 8px rgba(14, 165, 233, 0.3);
 }
+.mobile-fab.active {
+  background: #ef4444;
+  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.4);
+}
+
+/* --- FAB Quick Menu --- */
+.mobile-fab-backdrop {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.2);
+  z-index: 899;
+  animation: fadeIn 0.15s ease;
+}
+.mobile-fab-menu {
+  position: fixed;
+  bottom: calc(92px + env(safe-area-inset-bottom, 0px));
+  right: 24px;
+  display: flex;
+  flex-direction: column-reverse;
+  gap: 12px;
+  z-index: 901;
+  animation: fabMenuIn 0.2s ease-out;
+}
+@keyframes fabMenuIn {
+  from { opacity: 0; transform: translateY(10px) scale(0.95); }
+  to { opacity: 1; transform: translateY(0) scale(1); }
+}
+.mobile-fab-menu-item {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  flex-direction: row-reverse;
+  border: none;
+  background: none;
+  cursor: pointer;
+  padding: 0;
+  -webkit-tap-highlight-color: transparent;
+}
+.mobile-fab-menu-item span {
+  background: var(--weekly-bg, #fff);
+  color: var(--weekly-text, #333);
+  padding: 6px 14px;
+  border-radius: 8px;
+  font-size: 0.85rem;
+  font-weight: 600;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
+  white-space: nowrap;
+}
+.mobile-fab-menu-icon {
+  width: 44px;
+  height: 44px;
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: white;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
+}
 
 /* --- Bottom Sheet --- */
 .bottom-sheet-backdrop {

src/components/WeeklyView.tsx

@@ -1794,6 +1794,7 @@ export default function WeeklyView() {
     const [isMobile, setIsMobile] = useState(false);
 
     const [showMobileFabSheet, setShowMobileFabSheet] = useState(false);
+    const [showMobileFabMenu, setShowMobileFabMenu] = useState(false);
     const [fabTaskTitle, setFabTaskTitle] = useState("");
 
     const fabTextareaRef = useRef<HTMLTextAreaElement>(null);
@@ -8352,15 +8353,43 @@ export default function WeeklyView() {
                 isLoading={isFetchingLists}
             />
 
-            {/* Mobile: Floating Action Button for quick task creation */}
+            {/* Mobile: Floating Action Button with quick menu */}
             {isMobile && !showMobileFabSheet && !showSettings && !showFocusMode && (
-                <button
-                    className="mobile-fab"
-                    onClick={() => setShowMobileFabSheet(true)}
-                    title="Add task"
-                >
-                    <Plus size={28} />
-                </button>
+                <>
+                    {showMobileFabMenu && (
+                        <div className="mobile-fab-backdrop" onClick={() => setShowMobileFabMenu(false)} />
+                    )}
+                    {showMobileFabMenu && (
+                        <div className="mobile-fab-menu">
+                            <button className="mobile-fab-menu-item" onClick={() => { setShowMobileFabMenu(false); setShowMobileFabSheet(true); }}>
+                                <div className="mobile-fab-menu-icon" style={{ background: "#0ea5e9" }}><Plus size={18} /></div>
+                                <span>{language === "de" ? "Aufgabe" : "Task"}</span>
+                            </button>
+                            <button className="mobile-fab-menu-item" onClick={() => {
+                                setShowMobileFabMenu(false);
+                                const now = new Date();
+                                setCalendarEventModal({ isOpen: true, event: undefined, initialDate: now, initialStartTime: `${String(now.getHours()).padStart(2, "0")}:00` });
+                            }}>
+                                <div className="mobile-fab-menu-icon" style={{ background: "#8b5cf6" }}><Calendar size={18} /></div>
+                                <span>{language === "de" ? "Termin" : "Event"}</span>
+                            </button>
+                            <button className="mobile-fab-menu-item" onClick={() => { setShowMobileFabMenu(false); setShowFocusMode(true); }}>
+                                <div className="mobile-fab-menu-icon" style={{ background: "#f59e0b" }}><Zap size={18} /></div>
+                                <span>{language === "de" ? "Fokus" : "Focus"}</span>
+                            </button>
+                            <button className="mobile-fab-menu-item" onClick={() => { setShowMobileFabMenu(false); setIsSearchOpen(true); }}>
+                                <div className="mobile-fab-menu-icon" style={{ background: "#10b981" }}><Search size={18} /></div>
+                                <span>{language === "de" ? "Suche" : "Search"}</span>
+                            </button>
+                        </div>
+                    )}
+                    <button
+                        className={`mobile-fab ${showMobileFabMenu ? "active" : ""}`}
+                        onClick={() => setShowMobileFabMenu(!showMobileFabMenu)}
+                    >
+                        <Plus size={28} style={{ transform: showMobileFabMenu ? "rotate(45deg)" : "rotate(0deg)", transition: "transform 0.2s ease" }} />
+                    </button>
+                </>
             )}
 
             {/* Mobile: Bottom Sheet for task creation */}