fix: 添加丢失的svg

apps/web/src/assets/icons/code.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+  <polyline points="16 18 22 12 16 6"></polyline>
+  <polyline points="8 6 2 12 8 18"></polyline>
+</svg>

apps/web/src/assets/icons/shield.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+  <path d="M12 2l7 4v6c0 5-3.5 9.5-7 10-3.5-.5-7-5-7-10V6l7-4z"></path>
+</svg>

apps/web/src/assets/icons/users.svg

@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+  <path d="M17 21v-2a4 4 0 0 0-4-4H6a4 4 0 0 0-4 4v2"></path>
+  <circle cx="9" cy="7" r="4"></circle>
+  <path d="M23 21v-2a4 4 0 0 0-3-3.87"></path>
+  <path d="M16 3.13a4 4 0 0 1 0 7.75"></path>
+</svg>

apps/web/src/views/About.vue

@@ -21,22 +21,22 @@
 
 			<div class="features-grid">
 				<div class="feature-card">
-					<SvgIcon name="zap" class="feature-icon" />
+					<SvgIcon name="zap" class="feature-icon" size="30"/>
 					<h3>高性能</h3>
 					<p>优化的执行引擎，确保工作流快速可靠运行</p>
 				</div>
 				<div class="feature-card">
-					<SvgIcon name="shield" class="feature-icon" />
+					<SvgIcon name="shield" class="feature-icon" size="30"/>
 					<h3>安全可靠</h3>
 					<p>企业级安全标准，保护你的数据和凭证</p>
 				</div>
 				<div class="feature-card">
-					<SvgIcon name="users" class="feature-icon" />
+					<SvgIcon name="users" class="feature-icon" size="30"/>
 					<h3>团队协作</h3>
 					<p>支持多人协作，共同构建和维护工作流</p>
 				</div>
 				<div class="feature-card">
-					<SvgIcon name="code" class="feature-icon" />
+					<SvgIcon name="code" class="feature-icon" size="30"/>
 					<h3>开放扩展</h3>
 					<p>支持自定义节点和集成，满足个性化需求</p>
 				</div>