feat: enhance group duty pin command functionality

- Updated the `pin_duty_cmd` to handle cases where no message ID is found by sending a new duty message, pinning it, saving the pin, and scheduling the next update.
- Improved error handling for message sending and pinning operations, providing appropriate replies based on success or failure.
- Enhanced unit tests to cover the new behavior, ensuring proper functionality and error handling in various scenarios.

webapp/js/dayDetail.test.js

@@ -0,0 +1,41 @@
+/**
+ * Unit tests for buildDayDetailContent.
+ * Verifies dutyList is sorted by start_at before display.
+ */
+
+import { describe, it, expect, beforeAll } from "vitest";
+import { buildDayDetailContent } from "./dayDetail.js";
+
+describe("buildDayDetailContent", () => {
+  beforeAll(() => {
+    document.body.innerHTML =
+      '<div id="calendar"></div><div id="monthTitle"></div>' +
+      '<div id="dutyList"></div><div id="loading"></div><div id="error"></div>' +
+      '<div id="accessDenied"></div><div class="header"></div><div class="weekdays"></div>' +
+      '<button id="prevMonth"></button><button id="nextMonth"></button>';
+  });
+
+  it("sorts duty list by start_at when input order is wrong", () => {
+    const dateKey = "2025-02-25";
+    const duties = [
+      {
+        event_type: "duty",
+        full_name: "Петров",
+        start_at: "2025-02-25T14:00:00",
+        end_at: "2025-02-25T18:00:00",
+      },
+      {
+        event_type: "duty",
+        full_name: "Иванов",
+        start_at: "2025-02-25T09:00:00",
+        end_at: "2025-02-25T14:00:00",
+      },
+    ];
+    const html = buildDayDetailContent(dateKey, duties, []);
+    expect(html).toContain("Иванов");
+    expect(html).toContain("Петров");
+    const ivanovPos = html.indexOf("Иванов");
+    const petrovPos = html.indexOf("Петров");
+    expect(ivanovPos).toBeLessThan(petrovPos);
+  });
+});