fix: improve recipient picker - load all users with avatars

RecipientPicker (заявления):
- Added pagination support to load ALL users (not just first page)
- Added avatar images from media URLs instead of base64
- Falls back to initials when no avatar available
- Loads users in batches of 100 per page

RecipientPickerHandler (чаты):
- Added pagination support for full user list
- Keeps existing avatar display logic
- Loads 100 users per page when not searching
- Limits to 20 results when searching

CSS improvements:
- Added styles for avatar images (.user-avatar-img)
- Added placeholder styles for initials
- Proper object-fit and border-radius for avatars

backend/static/css/components/recipientPicker.css

@@ -182,6 +182,28 @@
   font-weight: 600;
   font-size: 0.75rem;
   flex-shrink: 0;
+  overflow: hidden;
+}
+
+/* Изображение аватара */
+.user-avatar-img {
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  border-radius: 50%;
+}
+
+/* Плейсхолдер с инициалами */
+.user-avatar-placeholder {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: var(--bs-primary);
+  color: white;
+  font-weight: 600;
+  font-size: 0.75rem;
 }
 
 /* Информация о пользователе */

backend/static/js/components/recipientPicker.js

@@ -52,16 +52,11 @@ export class RecipientPicker {
   async loadData() {
     this.state.loading = true;
     try {
-      const [usersRes, deptsRes] = await Promise.all([
-        fetch(this.options.apiUsersUrl),
-        fetch(this.options.apiDepartmentsUrl)
-      ]);
-
-      if (usersRes.ok) {
-        const usersData = await usersRes.json();
-        this.users = usersData.results || usersData;
-      }
-
+      // Загружаем пользователей с пагинацией (все страницы)
+      this.users = await this.loadAllUsers();
+      
+      // Загружаем отделы
+      const deptsRes = await fetch(this.options.apiDepartmentsUrl);
       if (deptsRes.ok) {
         const deptsData = await deptsRes.json();
         this.departments = deptsData.results || deptsData;
@@ -73,6 +68,37 @@ export class RecipientPicker {
     }
   }
 
+  /**
+   * Загрузка всех пользователей с автоматической обработкой пагинации
+   */
+  async loadAllUsers() {
+    const allUsers = [];
+    let nextUrl = this.options.apiUsersUrl + '?page_size=100&active=true';
+    
+    while (nextUrl) {
+      try {
+        const response = await fetch(nextUrl);
+        if (!response.ok) break;
+        
+        const data = await response.json();
+        const users = data.results || data;
+        
+        if (Array.isArray(users)) {
+          allUsers.push(...users);
+        }
+        
+        // Проверяем наличие следующей страницы
+        nextUrl = data.next || null;
+      } catch (error) {
+        console.error('RecipientPicker: Error loading users page:', error);
+        break;
+      }
+    }
+    
+    console.log(`RecipientPicker: Loaded ${allUsers.length} users`);
+    return allUsers;
+  }
+
   render() {
     this.container.innerHTML = `
       <div class="recipient-picker-email">
@@ -255,9 +281,17 @@ export class RecipientPicker {
       const displayName = `${user.last_name} ${user.first_name}`;
       const subtitle = user.position || user.email || '';
       
+      // Аватар или инициалы
+      let avatarHtml;
+      if (user.avatar) {
+        avatarHtml = `<img src="${user.avatar}" alt="${displayName}" class="user-avatar-img">`;
+      } else {
+        avatarHtml = `<div class="user-avatar-placeholder">${this.getInitials(user)}</div>`;
+      }
+      
       return `
         <div class="dropdown-item-user" data-action="add-${type}" data-user-id="${user.id}">
-          <div class="user-avatar-small">${this.getInitials(user)}</div>
+          <div class="user-avatar-small">${avatarHtml}</div>
           <div class="user-info">
             <div class="user-name">${displayName}</div>
             ${subtitle ? `<div class="user-subtitle">${subtitle}</div>` : ''}

backend/static/js/components/recipientPickerHandler.js

@@ -127,21 +127,39 @@ export class RecipientPicker {
     
     if (this.searchQuery) {
       url.searchParams.set('search', this.searchQuery);
+      // При поиске ограничиваем результаты
+      url.searchParams.set('page_size', '20');
+    } else {
+      // Без поиска загружаем все страницы
+      url.searchParams.set('page_size', '100');
+      url.searchParams.set('active', 'true');
     }
     
     url.searchParams.set('ordering', 'last_name,first_name');
-    url.searchParams.set('page_size', '20');
 
     try {
-      const response = await fetch(url.toString(), { headers: this.headers });
+      let allItems = [];
+      let nextUrl = url.toString();
       
-      if (!response.ok) {
-        throw new Error('HTTP ' + response.status);
-      }
+      // Загружаем все страницы пагинации
+      while (nextUrl) {
+        const response = await fetch(nextUrl, { headers: this.headers });
+        
+        if (!response.ok) {
+          throw new Error('HTTP ' + response.status);
+        }
 
-      const data = await response.json();
-      const items = Array.isArray(data) ? data : (data.results || []);
-      this._renderResults(items);
+        const data = await response.json();
+        const items = Array.isArray(data) ? data : (data.results || []);
+        allItems.push(...items);
+        
+        // Проверяем наличие следующей страницы
+        // При поиске загружаем только первую страницу
+        nextUrl = (!this.searchQuery && data.next) ? data.next : null;
+      }
+      
+      console.log(`RecipientPickerHandler: Loaded ${allItems.length} employees`);
+      this._renderResults(allItems);
     } catch (error) {
       this.elResults.innerHTML = '<div class="rp-empty">Не удалось загрузить сотрудников</div>';
       console.error('RecipientPicker fetch error:', error);