feat(mpuniapp): 形象化重构底部导航栏TabBar全部5大业务图标

- 替换名片图标为圆角矩形商务数字名片，彻底消除代码标签</>
- 替换雷达图标为中心基站与同心圆扫描波束，彻底消除API文本
- 替换潜客图标为双人商务人脉剪影，彻底消除4个方块
- 替换我的图标为典雅端正的商务西服肖像剪影，彻底消除大括号{}
- 优化工作台图标为现代微圆角商务控制台
- 严格遵循81x81像素Retina 3x高清透明PNG规范与色彩Token（常规灰#667085 / 选中蓝#0B5CFF）
- 全量11个测试套件64项测试100%通过

mpuniapp/tests/tabbar-icons.test.ts

@@ -0,0 +1,63 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import path from 'node:path';
+import crypto from 'node:crypto';
+
+const MP_ROOT = path.resolve('m:/2026项目/CRMmp/mpuniapp');
+const pagesJsonPath = path.join(MP_ROOT, 'pages.json');
+
+// 旧占位符（来自官方 hello uni-app demo 的 component/api/css/template）的 SHA-256 哈希
+const OBSOLETE_HASHES: Record<string, string> = {
+  'tab-card.png': '694f03d3c20a',
+  'tab-card-active.png': '3291476de8d0',
+  'tab-radar.png': 'ce31e8591429',
+  'tab-radar-active.png': '4c76333c9103',
+  'tab-leads.png': 'eec5efb627c1',
+  'tab-leads-active.png': '5efc171d40d1',
+  'tab-profile.png': '5e550e2f2368',
+  'tab-profile-active.png': 'ac196ab3ab73',
+};
+
+test('1. TabBar 图标静态资源完整性与 Retina 规范校验', () => {
+  assert.ok(fs.existsSync(pagesJsonPath), 'pages.json 必须存在');
+  const config = JSON.parse(fs.readFileSync(pagesJsonPath, 'utf-8'));
+  const list = config.tabBar?.list || [];
+
+  assert.equal(list.length, 5, 'TabBar 应当精确配置 5 个项');
+
+  for (const item of list) {
+    const iconFile = path.join(MP_ROOT, item.iconPath);
+    const activeIconFile = path.join(MP_ROOT, item.selectedIconPath);
+
+    assert.ok(fs.existsSync(iconFile), `图标文件不存在: ${item.iconPath}`);
+    assert.ok(fs.existsSync(activeIconFile), `选中态图标文件不存在: ${item.selectedIconPath}`);
+
+    for (const file of [iconFile, activeIconFile]) {
+      const buf = fs.readFileSync(file);
+      // 验证 PNG 魔数: 89 50 4E 47 0D 0A 1A 0A
+      const isPng = buf[0] === 0x89 && buf[1] === 0x50 && buf[2] === 0x4e && buf[3] === 0x47;
+      assert.ok(isPng, `${path.basename(file)} 必须为有效 PNG 文件`);
+
+      // 验证尺寸为 81x81
+      const width = buf.readUInt32BE(16);
+      const height = buf.readUInt32BE(20);
+      assert.equal(width, 81, `${path.basename(file)} 宽度必须为 81px`);
+      assert.equal(height, 81, `${path.basename(file)} 高度必须为 81px`);
+    }
+  }
+});
+
+test('2. 杜绝旧版开发占位符（去除 </>, API, {}, 4方块 等 demo 遗留图标）', () => {
+  for (const [filename, oldHashPrefix] of Object.entries(OBSOLETE_HASHES)) {
+    const file = path.join(MP_ROOT, 'static', filename);
+    assert.ok(fs.existsSync(file), `目标文件 ${filename} 存在`);
+    const buf = fs.readFileSync(file);
+    const hash = crypto.createHash('sha256').update(buf).digest('hex');
+    assert.notEqual(
+      hash.slice(0, 12),
+      oldHashPrefix,
+      `${filename} 仍为旧版占位符图标，必须替换为正式商务设计图标`
+    );
+  }
+});