ui: 模型选择栏布局重设计

- 新增渐变图标指示器
- select 更大圆角 + 更粗边框 + hover/focus 渐变高亮
- 能力标签改为独立彩色 pill（Think 紫色、Vision 青色）
- 箭头图标改为青色
- model-bar.js 适配新 badge 元素

css/style.css

@@ -254,27 +254,47 @@ body::before {
     display: flex;
     align-items: center;
     gap: 10px;
-    padding: 8px 16px;
+    padding: 10px 16px;
     background: var(--bg-secondary);
     border-bottom: 1px solid var(--border-glass);
     flex-shrink: 0;
 }
 
+.model-bar-icon {
+    width: 32px;
+    height: 32px;
+    border-radius: var(--radius-sm);
+    background: var(--gradient-main);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+    box-shadow: 0 2px 8px rgba(0, 245, 212, 0.2);
+}
+
+.model-bar-icon svg {
+    width: 16px;
+    height: 16px;
+    color: white;
+}
+
 .model-select-wrap {
     position: relative;
     flex: 1;
+    min-width: 0;
     display: flex;
     align-items: center;
 }
 
 .model-select {
     width: 100%;
-    padding: 7px 32px 7px 12px;
+    padding: 8px 36px 8px 14px;
     background: var(--bg-glass-light);
-    border: 1px solid var(--border-glass);
+    border: 1.5px solid var(--border-glass);
-    border-radius: var(--radius-sm);
+    border-radius: var(--radius-md);
     color: var(--text-primary);
     font-size: 13px;
+    font-weight: 500;
     font-family: var(--font-sans);
     outline: none;
     cursor: pointer;
@@ -285,39 +305,60 @@ body::before {
 
 .model-select:focus {
     border-color: var(--accent-cyan);
-    box-shadow: 0 0 0 2px rgba(0, 245, 212, 0.1);
+    box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.12), 0 0 12px rgba(0, 245, 212, 0.1);
+}
+
+.model-select:hover {
+    border-color: rgba(0, 245, 212, 0.4);
 }
 
 .model-select option {
     background: var(--bg-secondary);
     color: var(--text-primary);
-    padding: 6px;
+    padding: 8px;
 }
 
 .model-select-arrow {
     position: absolute;
-    right: 8px;
+    right: 10px;
     top: 50%;
     transform: translateY(-50%);
     pointer-events: none;
-    color: var(--text-muted);
+    color: var(--accent-cyan);
     display: flex;
+    opacity: 0.6;
 }
 
 .model-select-arrow svg {
-    width: 14px;
+    width: 16px;
-    height: 14px;
+    height: 16px;
 }
 
-.model-info-badge {
+.model-badges {
+    display: flex;
+    gap: 6px;
+    flex-shrink: 0;
+}
+
+.model-badge {
     font-size: 11px;
-    color: var(--text-muted);
+    font-weight: 600;
     white-space: nowrap;
-    padding: 2px 8px;
+    padding: 4px 10px;
-    background: var(--bg-glass-light);
+    border-radius: 20px;
-    border-radius: 10px;
+    letter-spacing: 0.3px;
-    border: 1px solid var(--border-glass);
+}
-    display: none;
+
+.think-badge {
+    color: var(--accent-purple);
+    background: rgba(123, 47, 247, 0.12);
+    border: 1px solid rgba(123, 47, 247, 0.25);
+}
+
+.vision-badge {
+    color: var(--accent-cyan);
+    background: rgba(0, 245, 212, 0.08);
+    border: 1px solid rgba(0, 245, 212, 0.2);
 }
 
 /* ── Think 按钮（输入栏内） ── */

index.html

@@ -47,6 +47,12 @@
 
     <!-- ═══════════════ 模型选择栏 ═══════════════ -->
     <div class="model-bar">
+        <div class="model-bar-icon">
+            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                <path d="M12 2a7 7 0 0 1 7 7c0 2.38-1.19 4.47-3 5.74V17a1 1 0 0 1-1 1H9a1 1 0 0 1-1-1v-2.26C6.19 13.47 5 11.38 5 9a7 7 0 0 1 7-7z"/>
+                <line x1="9" y1="21" x2="15" y2="21"/>
+            </svg>
+        </div>
         <div class="model-select-wrap">
             <select class="model-select" id="modelSelect">
                 <option value="">正在加载模型...</option>
@@ -55,7 +61,10 @@
                 <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><polyline points="6 9 12 15 18 9"/></svg>
             </span>
         </div>
-        <span class="model-info-badge" id="modelInfoBadge" title="模型信息"></span>
+        <div class="model-badges" id="modelBadges">
+            <span class="model-badge think-badge" id="badgeThink" style="display:none;">🧠 Think</span>
+            <span class="model-badge vision-badge" id="badgeVision" style="display:none;">👁️ Vision</span>
+        </div>
     </div>
 
     <!-- ═══════════════ 聊天区域 ═══════════════ -->

js/components/model-bar.js

@@ -6,14 +6,15 @@
 import { state, KEYS } from '../state.js';
 import { formatSize } from '../utils.js';
 
-let modelSelectEl, modelInfoBadgeEl, thinkCheckbox, thinkWrap;
+let modelSelectEl, badgeThinkEl, badgeVisionEl, thinkCheckbox, thinkWrap;
 
 /** 缓存模型能力 { modelName: { think: bool, vision: bool } } */
 const modelCapabilityCache = new Map();
 
 export function initModelBar() {
     modelSelectEl = document.querySelector('#modelSelect');
-    modelInfoBadgeEl = document.querySelector('#modelInfoBadge');
+    badgeThinkEl = document.querySelector('#badgeThink');
+    badgeVisionEl = document.querySelector('#badgeVision');
     thinkCheckbox = document.querySelector('#toggleThink');
     thinkWrap = document.querySelector('#thinkToggleWrap');
 
@@ -25,7 +26,8 @@ export function initModelBar() {
             await checkModelCapability(model);
         } else {
             setThinkAvailable(false);
-            setModelBadge('');
+            badgeThinkEl.style.display = 'none';
+            badgeVisionEl.style.display = 'none';
         }
     });
 }
@@ -45,7 +47,7 @@ export async function loadModels() {
 
         if (!data.models || data.models.length === 0) {
             modelSelectEl.innerHTML = '<option value="">未安装任何模型</option>';
-            setModelBadge('');
+            badgeThinkEl.style.display = 'none'; badgeVisionEl.style.display = 'none';
             return;
         }
 
@@ -74,7 +76,7 @@ export async function loadModels() {
     } catch (err) {
         console.error('[ModelBar] 加载模型失败:', err);
         modelSelectEl.innerHTML = '<option value="">加载失败 - 检查连接</option>';
-        setModelBadge('');
+        badgeThinkEl.style.display = 'none'; badgeVisionEl.style.display = 'none';
     }
 }
 
@@ -116,11 +118,9 @@ async function checkModelCapability(modelName) {
 function applyCapability(modelName, caps) {
     setThinkAvailable(caps.think);
 
-    // 更新信息标签
+    // 更新能力标签
-    const tags = [];
+    badgeThinkEl.style.display = caps.think ? '' : 'none';
-    if (caps.think) tags.push('🧠 Think');
+    badgeVisionEl.style.display = caps.vision ? '' : 'none';
-    if (caps.vision) tags.push('👁️ Vision');
-    setModelBadge(tags.join('  '));
 }
 
 /**
@@ -139,14 +139,6 @@ function setThinkAvailable(available) {
     }
 }
 
-/**
- * 更新模型信息标签
- */
-function setModelBadge(text) {
-    modelInfoBadgeEl.textContent = text;
-    modelInfoBadgeEl.style.display = text ? '' : 'none';
-}
-
 /**
  * 获取当前选择的模型
  */