feat: expand companion platform, device controls, and memoir workflows

Add customer and operator login, BLE provisioning, device fleet controls, call memory, memoir generation, and refreshed family and maintenance portals. Include API contracts, migrations, firmware sources, tests, assets, and deployment documentation.

web/design/qa-comparison-device.html

@@ -0,0 +1,27 @@
+<!doctype html>
+<html lang="zh-CN">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>设备管理设计对照</title>
+    <style>
+      * { box-sizing: border-box; }
+      body { margin: 0; color: #101828; background: #edf1f6; font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif; }
+      header { display: flex; height: 54px; padding: 0 24px; align-items: center; justify-content: space-between; border-bottom: 1px solid #d8dee8; background: #fff; }
+      h1 { margin: 0; font-size: 17px; }
+      header span { color: #667085; font-size: 12px; }
+      main { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 14px; }
+      figure { min-width: 0; margin: 0; overflow: hidden; border: 1px solid #d8dee8; border-radius: 8px; background: #fff; box-shadow: 0 4px 16px rgba(16,24,40,.06); }
+      figcaption { display: flex; height: 42px; padding: 0 14px; align-items: center; justify-content: space-between; border-bottom: 1px solid #e4e7ec; font-size: 13px; font-weight: 650; }
+      figcaption small { color: #667085; font-size: 11px; font-weight: 400; }
+      img { display: block; width: 100%; height: auto; }
+    </style>
+  </head>
+  <body>
+    <header><h1>设备管理 · 设计还原对照</h1><span>同一页面状态 / 1490 × 1080</span></header>
+    <main>
+      <figure><figcaption>确认稿 <small>视觉目标</small></figcaption><img src="http://127.0.0.1:4175/source.png" alt="设备管理确认稿" /></figure>
+      <figure><figcaption>本地实现 <small>浏览器实拍</small></figcaption><img src="/design/implementation-device-management.png" alt="设备管理实现截图" /></figure>
+    </main>
+  </body>
+</html>