f7support: опрос доски тикетов, скролл чата, непрочитанные

- Периодический опрос списка тикетов (tickets_poll_ms, по умолчанию 3 с), пока вкладка видима.

- Параметр конфига tickets_poll_ms (3000–120000 мс) и data-messages-poll-ms в шаблоне.

- Надёжный скролл вниз при открытии чата и после загрузки вложений.

- Учёт has_unread как true/1/"1"/"true" для индикатора на карточке.

js/main.js

@@ -8,6 +8,11 @@
   const supportWsBaseOverride = (root.dataset.supportWsBase || "").trim();
   /** Включается в NC: `occ config:app:set f7support client_read_receipts --value=1` после выката API `POST .../read`. */
   const clientReadReceiptsEnabled = root.dataset.clientReadReceipts === "1";
+  const ticketsPollIntervalMs = (() => {
+    const n = parseInt(String(root.dataset.messagesPollMs || "3000"), 10);
+    if (!Number.isFinite(n)) return 3000;
+    return Math.min(120000, Math.max(3000, n));
+  })();
 
   const RASTER_IMAGE_EXT = new Set(["jpg", "jpeg", "png", "gif", "webp", "bmp", "tif", "tiff", "heic", "heif"]);
   const RASTER_IMAGE_MIME = new Set([
@@ -64,6 +69,7 @@
     blobUrls: [],
     ticketSocket: null,
     wsReconnectTimer: null,
+    ticketsPollTimer: null,
     pendingFile: null,
   };
 
@@ -259,7 +265,7 @@
     }
     const node = messageList.querySelector(`[data-f7-msg-id="${id}"]`);
     if (node) hydrateClientAttachments(node);
-    messageList.scrollTop = messageList.scrollHeight;
+    scrollChatToBottom();
     if (clientReadReceiptsEnabled && msg.author_role === "support" && state.currentTicket) {
       markClientTicketRead(state.currentTicket).catch(() => {});
     }
@@ -688,6 +694,39 @@
 
   bindClientChatDnDOnce();
 
+  function scrollChatToBottom() {
+    const ml = document.getElementById("message-list");
+    if (!ml) return;
+    const run = () => {
+      try {
+        ml.scrollTop = ml.scrollHeight;
+      } catch (_) {}
+    };
+    run();
+    requestAnimationFrame(() => {
+      run();
+      requestAnimationFrame(run);
+    });
+    window.setTimeout(run, 80);
+    window.setTimeout(run, 320);
+  }
+
+  function ticketHasUnread(ticket) {
+    const v = ticket?.has_unread;
+    return v === true || v === 1 || v === "1" || v === "true";
+  }
+
+  function scheduleTicketsBoardPolling() {
+    if (state.ticketsPollTimer) {
+      clearInterval(state.ticketsPollTimer);
+      state.ticketsPollTimer = null;
+    }
+    state.ticketsPollTimer = window.setInterval(() => {
+      if (document.visibilityState === "hidden") return;
+      fetchTickets().catch(() => {});
+    }, ticketsPollIntervalMs);
+  }
+
   function showError(message) {
     errorBox.textContent = message || "";
   }
@@ -809,7 +848,7 @@
     const preview = escapeHtml(previewRaw);
     const activity = ticket.activity_at || ticket.created_at;
     const time = escapeHtml(formatTicketCardTime(activity));
-    const hasUnread = Boolean(ticket.has_unread);
+    const hasUnread = ticketHasUnread(ticket);
     const unread = hasUnread
       ? '<span class="f7-unread-dot" title="Новое сообщение" aria-label="Новое сообщение"></span>'
       : "";
@@ -911,6 +950,7 @@
           img.src = objUrl;
           img.alt = "";
           img.loading = "lazy";
+          img.addEventListener("load", () => scrollChatToBottom(), { once: true });
           frame.appendChild(img);
           wrap.replaceChildren(frame);
         } catch (_) {
@@ -945,6 +985,7 @@
     revokeAttachmentUrls();
     messageList.innerHTML = state.messages.map((m) => messageBlockHtml(m)).join("");
     hydrateClientAttachments(messageList);
+    scrollChatToBottom();
   }
 
   async function submitTicketWithRetry(payload) {
@@ -1084,6 +1125,10 @@
   };
 
   queueMicrotask(() => {
-    fetchTickets().catch((e) => showError(e.message));
+    fetchTickets()
+      .catch((e) => showError(e.message))
+      .finally(() => {
+        scheduleTicketsBoardPolling();
+      });
   });
 })();