chore: update Docker build and release workflow

- Refactored the `docker-build.yml` workflow to improve clarity and maintainability.
- Ensured the workflow correctly handles Docker image building and pushing to the Gitea Container Registry upon version tag pushes.
- Enhanced the release step to generate release notes based on previous tags, improving release documentation.

webapp/app.js

@@ -290,18 +290,20 @@
       cell.className = "day" + (isOther ? " other-month" : "") + (isToday ? " today" : "") + (showMarkers && hasAny ? " has-duty" : "") + (showMarkers && hasEvent ? " holiday" : "");
 
       function namesAttr(list) { return list.length ? escapeHtml(list.map(function (x) { return x.full_name; }).join("\n")) : ""; }
-      function titleAttr(list) { return list.length ? escapeHtml(list.map(function (x) { return x.full_name; }).join(", ")) : ""; }
+      var dutyItemsJson = dutyList.length
+        ? JSON.stringify(dutyList.map(function (x) { return { full_name: x.full_name, start_at: x.start_at, end_at: x.end_at }; })).replace(/'/g, "'")
+        : "";
 
       let html = "<span class=\"num\">" + d.getDate() + "</span><div class=\"day-markers\">";
       if (showMarkers) {
         if (dutyList.length) {
-          html += "<button type=\"button\" class=\"duty-marker\" data-event-type=\"duty\" data-names=\"" + namesAttr(dutyList) + "\" title=\"" + titleAttr(dutyList) + "\" aria-label=\"Дежурные\">Д</button>";
+          html += "<button type=\"button\" class=\"duty-marker\" data-event-type=\"duty\" data-date=\"" + escapeHtml(key) + "\" data-names=\"" + namesAttr(dutyList) + "\" data-duty-items='" + dutyItemsJson + "' aria-label=\"Дежурные\">Д</button>";
         }
         if (unavailableList.length) {
-          html += "<button type=\"button\" class=\"unavailable-marker\" data-event-type=\"unavailable\" data-names=\"" + namesAttr(unavailableList) + "\" title=\"" + titleAttr(unavailableList) + "\" aria-label=\"Недоступен\">Н</button>";
+          html += "<button type=\"button\" class=\"unavailable-marker\" data-event-type=\"unavailable\" data-names=\"" + namesAttr(unavailableList) + "\" aria-label=\"Недоступен\">Н</button>";
         }
         if (vacationList.length) {
-          html += "<button type=\"button\" class=\"vacation-marker\" data-event-type=\"vacation\" data-names=\"" + namesAttr(vacationList) + "\" title=\"" + titleAttr(vacationList) + "\" aria-label=\"Отпуск\">О</button>";
+          html += "<button type=\"button\" class=\"vacation-marker\" data-event-type=\"vacation\" data-names=\"" + namesAttr(vacationList) + "\" aria-label=\"Отпуск\">О</button>";
         }
         if (hasEvent) {
           html += "<button type=\"button\" class=\"info-btn\" aria-label=\"Информация о дне\" data-summary=\"" + escapeHtml(eventSummaries.join("\n")) + "\">i</button>";
@@ -403,11 +405,61 @@
 
   var EVENT_TYPE_LABELS = { duty: "Дежурство", unavailable: "Недоступен", vacation: "Отпуск" };
 
+  function formatHHMM(isoStr) {
+    if (!isoStr) { return ""; }
+    var d = new Date(isoStr);
+    var h = d.getHours();
+    var m = d.getMinutes();
+    return (h < 10 ? "0" : "") + h + ":" + (m < 10 ? "0" : "") + m;
+  }
+
   function getDutyMarkerHintContent(marker) {
     var type = marker.getAttribute("data-event-type") || "duty";
     var label = EVENT_TYPE_LABELS[type] || type;
-    var names = (marker.getAttribute("data-names") || "").replace(/\n/g, ", ");
+    var names = marker.getAttribute("data-names") || "";
-    return names ? label + ": " + names : label;
+    var body;
+    if (type === "duty") {
+      var dutyItemsRaw = marker.getAttribute("data-duty-items") || (marker.dataset && marker.dataset.dutyItems) || "";
+      var dutyItems = [];
+      try {
+        if (dutyItemsRaw) { dutyItems = JSON.parse(dutyItemsRaw); }
+      } catch (e) { /* ignore */ }
+      var hasTimes = dutyItems.length > 0 && dutyItems.some(function (it) {
+        var start = it.start_at != null ? it.start_at : it.startAt;
+        var end = it.end_at != null ? it.end_at : it.endAt;
+        return start || end;
+      });
+      if (dutyItems.length >= 1 && hasTimes) {
+        var hintDay = marker.getAttribute("data-date") || "";
+        body = dutyItems.map(function (item, idx) {
+          var startAt = item.start_at != null ? item.start_at : item.startAt;
+          var endAt = item.end_at != null ? item.end_at : item.endAt;
+          var endHHMM = endAt ? formatHHMM(endAt) : "";
+          var startHHMM = startAt ? formatHHMM(startAt) : "";
+          var startSameDay = hintDay && startAt && localDateString(new Date(startAt)) === hintDay;
+          var endSameDay = hintDay && endAt && localDateString(new Date(endAt)) === hintDay;
+          var fullName = item.full_name != null ? item.full_name : item.fullName;
+          var parts = [fullName];
+          if (idx === 0) {
+            if (startSameDay && startHHMM) {
+              parts.push("с " + startHHMM);
+              if (endSameDay && endHHMM && endHHMM !== startHHMM) { parts.push("до " + endHHMM); }
+            } else if (endHHMM) {
+              parts.push("до " + endHHMM);
+            }
+          } else if (idx > 0) {
+            if (startHHMM) { parts.push("с " + startHHMM); }
+            if (endHHMM && endSameDay && endHHMM !== startHHMM) { parts.push("до " + endHHMM); }
+          }
+          return parts.join(", ");
+        }).join("\n");
+      } else {
+        body = names;
+      }
+    } else {
+      body = names;
+    }
+    return body ? label + ":\n" + body : label;
   }
 
   function clearActiveDutyMarker() {
@@ -568,7 +620,7 @@
       const dayClass = "duty-timeline-day" + (isToday ? " duty-timeline-day--today" : "");
       const dateLabel = isToday ? dateKeyToDDMM(date) : dateKeyToDDMM(date);
       const dateCellHtml = isToday
-        ? "<span class=\"duty-timeline-date\"><span class=\"duty-timeline-date-label\">Сегодня</span><span class=\"duty-timeline-date-dot\" aria-hidden=\"true\"></span><span class=\"duty-timeline-date-day\">" + escapeHtml(dateLabel) + "</span></span>"
+        ? "<span class=\"duty-timeline-date\"><span class=\"duty-timeline-date-label\">Сегодня</span><span class=\"duty-timeline-date-day\">" + escapeHtml(dateLabel) + "</span><span class=\"duty-timeline-date-dot\" aria-hidden=\"true\"></span></span>"
         : "<span class=\"duty-timeline-date\">" + escapeHtml(dateLabel) + "</span>";
       const dayDuties = duties.filter(function (d) { return localDateString(new Date(d.start_at)) === date; }).sort(function (a, b) { return new Date(a.start_at) - new Date(b.start_at); });
       let dayHtml = "";