Web: remove version from tab title, fix month event packing, add day overflow popup

- Tab title shows only "Calendarr" (version stays in sidebar/impressum)
- Fix lane assignment in month view: use 2D per-column occupancy grid instead of
  global colEnd tracking; eliminates empty rows caused by non-overlapping events
  being pushed to lower lanes
- "+N weitere" now opens an inline popup listing all events for that day
  (all-day first, then by time); clicking an event opens its detail popup
- Double-click on day cell navigates to day view (was already implemented)
- Remove hardcoded "v18" from login screen impressum button
- Bump version to v49

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

frontend/css/app.css

@@ -733,6 +733,43 @@ a { color: var(--primary); text-decoration: none; }
 }
 .month-more:hover { color: var(--primary); }
 
+/* Overflow popup ("+N weitere") */
+.month-overflow-popup {
+  position: fixed; z-index: 800;
+  background: var(--bg-surface);
+  border: 1px solid var(--border);
+  border-radius: 12px;
+  box-shadow: var(--shadow-lg);
+  padding: 10px 0;
+  min-width: 220px; max-width: 300px;
+  user-select: none;
+}
+.mop-header {
+  font-size: 12px; font-weight: 600;
+  color: var(--text-2);
+  padding: 0 12px 8px;
+  border-bottom: 1px solid var(--border);
+  margin-bottom: 4px;
+}
+.mop-row {
+  display: flex; align-items: center; gap: 7px;
+  padding: 4px 12px; cursor: pointer;
+  border-radius: 6px; margin: 0 4px;
+}
+.mop-row:hover { background: var(--bg-hover); }
+.mop-dot {
+  width: 8px; height: 8px; border-radius: 50%;
+  flex-shrink: 0;
+}
+.mop-time {
+  font-size: 11px; color: var(--text-2);
+  min-width: 42px; flex-shrink: 0;
+}
+.mop-title {
+  font-size: 12px; font-weight: 500; color: var(--text-1);
+  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
+}
+
 /* ── Week / Day Views ───────────────────────────────────── */
 .week-view, .day-view { display: flex; flex-direction: column; flex: 1; min-height: 0; overflow-y: scroll; }
 .week-head-sticky {

frontend/index.html

@@ -80,7 +80,7 @@
       <button type="submit" class="btn btn-primary btn-full">Anmelden</button>
     </form>
   </div>
-  <button class="impressum-link" onclick="openImpressum()">©&nbsp;2026&nbsp;Scarriffleservices&nbsp;·&nbsp;v18</button>
+  <button class="impressum-link" onclick="openImpressum()">©&nbsp;2026&nbsp;Scarriffleservices</button>
 </div>
 
 <!-- ─── MAIN APP ──────────────────────────────────────────── -->

frontend/js/calendar.js

@@ -9,8 +9,8 @@ import { openDatePicker, formatDtDisplay } from './date-picker.js';
 import { t, setLang, getLang } from './i18n.js';
 import { APP_VERSION } from './version.js';
 
-// Version sofort beim Modul-Load ueberall sichtbar setzen.
-document.title = `Calendarr ${APP_VERSION}`;
+// Version im Impressum/Sidebar sichtbar, nicht im Tab-Titel.
+document.title = 'Calendarr';
 document.addEventListener('DOMContentLoaded', () => {
   const imp = document.getElementById('impressum-version');
   if (imp) imp.textContent = `Calendarr ${APP_VERSION}`;
@@ -543,7 +543,7 @@ function updateTitle() {
   titleEl.innerHTML =
     `<span class="view-title-main">${main}</span>` +
     (year ? `<span class="view-title-year">${year}</span>` : '');
-  document.title = `Calendarr ${APP_VERSION} - ${fullText}`;
+  document.title = `Calendarr – ${fullText}`;
 }
 
 function updateViewButtons() {

frontend/js/version.js

@@ -1,2 +1,2 @@
 // Increment APP_VERSION with every code change
-export const APP_VERSION = 'v48';
+export const APP_VERSION = 'v49';

frontend/js/views/month.js

@@ -71,13 +71,21 @@ export function renderMonth(container, currentDate, events, onDayClick, onEventC
       return new Date(a.ev.start) - new Date(b.ev.start);
     });
 
-    // Assign lanes (greedy interval packing)
-    const lanes = [];
+    // Assign lanes using a 2D occupancy grid (per-column tracking).
+    // This prevents gaps: an event in cols 3-6 no longer blocks col 0-2 in the same lane.
+    const occupiedGrid = []; // occupiedGrid[lane] = Set<col>
     rowItems.forEach(item => {
-      let laneIdx = lanes.findIndex(l => item.colStart >= l.colEnd);
-      if (laneIdx === -1) { laneIdx = lanes.length; lanes.push({ colEnd: 0 }); }
-      item.lane = laneIdx;
-      lanes[laneIdx].colEnd = item.colStart + item.span;
+      const cols = Array.from({ length: item.span }, (_, i) => item.colStart + i);
+      let laneIdx = 0;
+      for (;;) {
+        if (!occupiedGrid[laneIdx]) occupiedGrid[laneIdx] = new Set();
+        if (cols.every(c => !occupiedGrid[laneIdx].has(c))) {
+          cols.forEach(c => occupiedGrid[laneIdx].add(c));
+          item.lane = laneIdx;
+          break;
+        }
+        laneIdx++;
+      }
     });
 
     // Track overflow per column
@@ -190,11 +198,20 @@ export function renderMonth(container, currentDate, events, onDayClick, onEventC
       if (ev) onEventClick(ev, spanEl);
       return;
     }
-    // "+N more" → navigate to day view
+    // "+N more" → show overflow popup with all events for that day
     const moreEl = e.target.closest('.month-more');
     if (moreEl) {
       e.stopPropagation();
-      onDayClick(new Date(moreEl.dataset.date + 'T00:00:00'), 'navigate');
+      const dayDate = new Date(moreEl.dataset.date + 'T00:00:00');
+      const dayEvents = normed
+        .filter(({ ns, ne }) => ns <= dayDate && ne >= dayDate)
+        .map(({ ev }) => ev)
+        .sort((a, b) => {
+          if (a.allDay && !b.allDay) return -1;
+          if (!a.allDay && b.allDay) return 1;
+          return new Date(a.start) - new Date(b.start);
+        });
+      showOverflowPopup(moreEl, dayDate, dayEvents, onEventClick);
       return;
     }
     // Column click → select day
@@ -243,3 +260,66 @@ function escHtml(s) {
 function escAttr(s) {
   return String(s).replace(/"/g,'&quot;').replace(/'/g,'&#39;');
 }
+
+function showOverflowPopup(anchor, date, events, onEventClick) {
+  document.querySelectorAll('.month-overflow-popup').forEach(p => p.remove());
+
+  const popup = document.createElement('div');
+  popup.className = 'month-overflow-popup';
+
+  // Header: "Mo, 3. Jul"
+  const months = t('months');
+  const dow    = t('dow_monday');
+  const dowIdx = (date.getDay() + 6) % 7; // 0=Mon
+  const header = document.createElement('div');
+  header.className = 'mop-header';
+  header.textContent = `${dow[dowIdx]}, ${date.getDate()}. ${months[date.getMonth()]}`;
+  popup.appendChild(header);
+
+  events.forEach(ev => {
+    const row = document.createElement('div');
+    row.className = 'mop-row';
+
+    const dot = document.createElement('span');
+    dot.className = 'mop-dot';
+    dot.style.background = ev.color || ev.calendarColor || '#4285f4';
+
+    const time = document.createElement('span');
+    time.className = 'mop-time';
+    time.textContent = ev.allDay ? t('allday_cap') : fmtTime(new Date(ev.start));
+
+    const title = document.createElement('span');
+    title.className = 'mop-title';
+    title.textContent = ev.title;
+
+    row.append(dot, time, title);
+    row.addEventListener('click', e => {
+      e.stopPropagation();
+      popup.remove();
+      onEventClick(ev, row);
+    });
+    popup.appendChild(row);
+  });
+
+  document.body.appendChild(popup);
+
+  // Position near anchor, stay in viewport
+  const r  = anchor.getBoundingClientRect();
+  const pw = popup.offsetWidth  || 260;
+  const ph = popup.offsetHeight || 200;
+  let left = r.left;
+  let top  = r.bottom + 4;
+  if (left + pw > window.innerWidth  - 8) left = window.innerWidth  - pw - 8;
+  if (top  + ph > window.innerHeight - 8) top  = r.top - ph - 4;
+  if (left < 8) left = 8;
+  if (top  < 8) top  = 8;
+  popup.style.left = left + 'px';
+  popup.style.top  = top  + 'px';
+
+  setTimeout(() => {
+    document.addEventListener('click', function close() {
+      popup.remove();
+      document.removeEventListener('click', close);
+    });
+  }, 0);
+}