feat: add all equipment view with sorting, print functionality, and UI improvements

- Add "Всё оборудование" menu item with equipment sorted by inventory number
- Add row numbering in all equipment view
- Add print functionality for auditory view with "Проверено" column
- Hide unnecessary columns (quantity, type, owner) when printing
- Make cards full-width and responsive (container-fluid)
- Consolidate CSS styles from static/css/index.css to frontend/styles.css
- Fix text wrapping in "Расположение" column
- Add sort_by_inv parameter to /oboruds/ API endpoint

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/app.js

@@ -3,6 +3,7 @@ const { createApp } = Vue;
 const api = {
   auds: "/auditories/",
   oboruds: (audId) => `/oboruds/?aud_id=${encodeURIComponent(audId)}`,
+  allOboruds: "/oboruds/?sort_by_inv=true",
   owners: "/owners/",
 };
 
@@ -19,8 +20,10 @@ createApp({
       auditories: [],
       selectedAudId: '',
       oboruds: [],
+      allOboruds: [],
       status: '',
       error: '',
+      printTitle: '',
       // auth/user management
       token: '',
       role: '',
@@ -98,6 +101,34 @@ createApp({
         this.status = '';
       }
     },
+    async loadAllOboruds() {
+      this.status = 'Загрузка всего оборудования…';
+      this.error = '';
+      try {
+        this.allOboruds = await fetchJSON(api.allOboruds);
+        this.status = `Загружено ${this.allOboruds.length} записей`;
+      } catch (e) {
+        console.error(e);
+        this.error = 'Не удалось загрузить оборудование';
+        this.status = '';
+      }
+    },
+    async showAllEquipment() {
+      this.view = 'allEquipment';
+      await this.loadAllOboruds();
+    },
+    getAuditoryName(audId) {
+      if (!audId) return '';
+      const aud = this.auditories.find(a => a.id === audId);
+      return aud ? aud.audnazvanie : '';
+    },
+    printPage() {
+      const aud = this.auditories.find(a => a.id === this.selectedAudId);
+      this.printTitle = 'Аудитория № ' + (aud ? aud.audnazvanie : '');
+      this.$nextTick(() => {
+        window.print();
+      });
+    },
     async saveOwner(item) {
       try {
         this.status = 'Сохранение владельца…';