feat: Add fullscreen toggle functionality to GraphView for enhanced user experience and improved interaction

frontend/src/GraphView.jsx

@@ -1,15 +1,17 @@
 import React, { useState, useRef, useEffect } from 'react';
 import * as d3 from 'd3';
-import { IconZoomIn, IconZoomOut, IconMaximize } from '@tabler/icons-react';
+import { IconZoomIn, IconZoomOut, IconMaximize, IconMinimize } from '@tabler/icons-react';
 
 function GraphView({ servers, connections }) {
   const [nodePositions, setNodePositions] = useState({});
   const [draggedNode, setDraggedNode] = useState(null);
   const [dragOffset, setDragOffset] = useState({ x: 0, y: 0 });
   const [hoveredLinkId, setHoveredLinkId] = useState(null);
+  const containerRef = useRef(null);
   const svgRef = useRef(null);
   const gRef = useRef(null);
   const zoomRef = useRef(null);
+  const [isFullscreen, setIsFullscreen] = useState(false);
 
   // Размеры карточки узла
   const NODE_WIDTH = 160;
@@ -111,6 +113,23 @@ function GraphView({ servers, connections }) {
     d3.select(svgEl).transition().duration(250).call(zoomRef.current.transform, t);
   };
 
+  // Полноэкранный режим
+  useEffect(() => {
+    const handler = () => setIsFullscreen(Boolean(document.fullscreenElement));
+    document.addEventListener('fullscreenchange', handler);
+    return () => document.removeEventListener('fullscreenchange', handler);
+  }, []);
+
+  const toggleFullscreen = () => {
+    const el = containerRef.current;
+    if (!el) return;
+    if (!document.fullscreenElement) {
+      el.requestFullscreen?.();
+    } else {
+      document.exitFullscreen?.();
+    }
+  };
+
   if (servers.length === 0) {
     return (
       <div className="text-center py-5">
@@ -222,7 +241,7 @@ function GraphView({ servers, connections }) {
   };
 
   return (
-    <div style={{ width: '100%', height: '500px', border: '1px solid #e5e7eb', borderRadius: '8px', overflow: 'hidden', background: '#f8fafc', position: 'relative' }}>
+    <div ref={containerRef} style={{ width: '100%', height: '500px', border: '1px solid #e5e7eb', borderRadius: '8px', overflow: 'hidden', background: '#f8fafc', position: 'relative' }}>
       <svg 
         ref={svgRef}
         width="100%" 
@@ -415,8 +434,9 @@ function GraphView({ servers, connections }) {
                       x={badgeX + 18}
                       y={badgeY + 12}
                       textAnchor="middle"
-                      fontSize="12"
+                      fontSize="14"
                       dominantBaseline="middle"
+                      style={{ fontFamily: 'Segoe UI Emoji, Noto Color Emoji, Apple Color Emoji, "Twemoji Mozilla", "EmojiOne Color", sans-serif' }}
                     >
                       {flag}
                     </text>
@@ -462,7 +482,7 @@ function GraphView({ servers, connections }) {
         </g>
       </svg>
       {/* Контролы масштабирования */}
-      <div className="position-absolute" style={{ right: 10, top: 10 }}>
+      <div className="position-absolute" style={{ right: 10, top: 10, zIndex: 10, pointerEvents: 'auto' }}>
         <div className="btn-group btn-group-sm">
           <button className="btn btn-outline-secondary" onClick={() => zoomBy(1.2)} title="Увеличить">
             <IconZoomIn size={16} />
@@ -470,8 +490,8 @@ function GraphView({ servers, connections }) {
           <button className="btn btn-outline-secondary" onClick={() => zoomBy(1/1.2)} title="Уменьшить">
             <IconZoomOut size={16} />
           </button>
-          <button className="btn btn-outline-secondary" onClick={fitToView} title="Подогнать по окну">
+          <button className="btn btn-outline-secondary" onClick={toggleFullscreen} title={isFullscreen ? 'Выйти из полноэкранного' : 'Во весь экран'}>
-            <IconMaximize size={16} />
+            {isFullscreen ? <IconMinimize size={16} /> : <IconMaximize size={16} />}
           </button>
         </div>
       </div>