fix: mobile sync icon no longer shifts date; selected day tracks last clicked column

- Mobile header: removed spinner/error from inside the date button,
  placed as a fixed-width (24px) sibling slot after the button — date
  text position is now stable regardless of sync state
- Selected day: added selectedDay state tracking the last day column
  the user clicked; passed to getSelectedDay() so "Selektierter Tag"
  in the header reflects the actual cursor position, not just visibleDays[0]
- getSelectedDay() priority: explicit selection → today if visible → first visible day
- Navigating to a new week resets selectedDay so the header stays accurate

v1.81.1

package.json

@@ -1,6 +1,6 @@
 {
   "name": "my-weekly-todo-list",
-  "version": "1.81.0",
+  "version": "1.81.1",
   "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/components/WeeklyView.tsx

@@ -415,8 +415,10 @@ function formatCustomHeader(format: string, days: Date[], language: string, t: a
     return format.replace(regex, (match) => tokens[match] || match);
 }
 
-// Get the "selected" day for current_day header: today if visible, otherwise first visible day
+// Get the "selected" day for current_day header.
-function getSelectedDay(days: Date[]): Date {
+// Priority: explicit selection → today if visible → first visible day
+function getSelectedDay(days: Date[], explicitSelection?: Date | null): Date {
+    if (explicitSelection) return explicitSelection;
     const today = new Date();
     return days.some(d =>
         d.getDate() === today.getDate() &&
@@ -792,6 +794,9 @@ export default function WeeklyView() {
     const [isMobile, setIsMobile] = useState(false);
     const [isPortrait, setIsPortrait] = useState(false);
 
+    // Tracks the last day column the user interacted with (for "selected day" header display)
+    const [selectedDay, setSelectedDay] = useState<Date | null>(null);
+
     const [showMobileFabSheet, setShowMobileFabSheet] = useState(false);
     const [showMobileFabMenu, setShowMobileFabMenu] = useState(false);
     const [mobileStickyDay, setMobileStickyDay] = useState<string | null>(null);
@@ -3429,6 +3434,7 @@ export default function WeeklyView() {
         }
         setCurrentWeekStart(newDate);
         setSlideDirection(direction === "left" ? "next" : "prev");
+        setSelectedDay(null); // reset so header shows the new week's today/first day
     };
 
     const goToPrevWeek = () =>
@@ -5601,17 +5607,13 @@ export default function WeeklyView() {
                         <PanelLeftOpen size={22} />
                     </button>
 
-                    {/* Center: Date display (tap to jump to date) */}
+                    {/* Center: Date display (tap to jump to date) + fixed-width sync slot */}
                     <button className="mobile-header-date" onClick={() => setShowDatePicker(true)} style={{
                         fontFamily: profile.cwFontFamily || "Inter",
                         fontSize: scaleRem(profile.cwFontSize || "0.9rem"),
                         fontWeight: Number(profile.cwFontWeight || "700"),
                         color: adjustColorForDarkMode(profile.cwColor || (darkMode ? "#e5e7eb" : "#333333"), darkMode),
                     }}>
-                        {(isLoading || isSyncing || syncStatus === "syncing") && (
-                            <div className="weekly-spinner" title="Syncing..." style={{ width: 14, height: 14 }}></div>
-                        )}
-                        {syncError && <AlertCircle size={14} className="text-red-500" />}
                         <span>
                             {(() => {
                                 const visibleDays = getVisibleDays();
@@ -5621,7 +5623,7 @@ export default function WeeklyView() {
                                 if (mobileDisplay === "none") return "";
                                 if (mobileDisplay === "current_day") {
                                     const fmt = profile.headerCurrentDayFormat || "DDD, DD. MMMM YYYY";
-                                    return formatCustomHeader(fmt, visibleDays, profile.language, t, getSelectedDay(visibleDays));
+                                    return formatCustomHeader(fmt, visibleDays, profile.language, t, getSelectedDay(visibleDays, selectedDay));
                                 }
                                 if (mobileDisplay === "date") return new Date().toLocaleDateString(profile.language, { day: '2-digit', month: '2-digit', year: 'numeric' });
                                 if (mobileDisplay === "month_year") return getCWReferenceDate(visibleDays).toLocaleDateString(profile.language, { month: 'long', year: 'numeric' });
@@ -5633,6 +5635,15 @@ export default function WeeklyView() {
                         <ChevronDown size={12} style={{ opacity: 0.5 }} />
                     </button>
 
+                    {/* Sync status indicator — fixed width so date never shifts */}
+                    <div style={{ width: 24, display: "flex", alignItems: "center", justifyContent: "center", flexShrink: 0 }}>
+                        {syncError
+                            ? <AlertCircle size={14} className="text-red-500" title={syncError} />
+                            : (isLoading || isSyncing || syncStatus === "syncing")
+                                ? <div className="weekly-spinner" title="Syncing..." style={{ width: 14, height: 14 }}></div>
+                                : null}
+                    </div>
+
                     {/* Right: Settings menu */}
                     <button className="mobile-header-btn" onClick={() => setShowSettings(true)} title="Settings" style={{ color: darkMode ? "#e5e7eb" : "#6b7280" }}>
                         <Menu size={22} />
@@ -5767,7 +5778,7 @@ export default function WeeklyView() {
                                     if (effectiveDisplay === "none") return "";
                                     if (effectiveDisplay === "current_day") {
                                         const fmt = profile.headerCurrentDayFormat || "DDD, DD. MMMM YYYY";
-                                        return formatCustomHeader(fmt, visibleDays, profile.language, t, getSelectedDay(visibleDays));
+                                        return formatCustomHeader(fmt, visibleDays, profile.language, t, getSelectedDay(visibleDays, selectedDay));
                                     }
                                     if (effectiveDisplay === "month") return getCWReferenceDate(visibleDays).toLocaleDateString(profile.language, { month: "long" });
                                     if (effectiveDisplay === "month_year") return getCWReferenceDate(visibleDays).toLocaleDateString(profile.language, { month: "long", year: "numeric" });
@@ -6653,6 +6664,7 @@ export default function WeeklyView() {
                                 key={date.toISOString()}
                                 className={`weekly-day-column ${date.getDay() === 6 ? "is-sat" : ""} ${date.getDay() === 0 ? "is-sun" : ""} ${isToday ? "is-today" : ""} ${isPast ? "is-past" : ""}`}
                                 data-date={`${date.getFullYear()}-${String(date.getMonth() + 1).padStart(2, '0')}-${String(date.getDate()).padStart(2, '0')}`}
+                                onClick={() => setSelectedDay(date)}
                             >
                                 {/* Day Header */}
                                 <header className="weekly-day-header" ref={colIndex === 0 ? dayHeaderRef : undefined}>