feat: homework multi-image upload and crop

2026-02-01 11:33:59 +08:00
--- a/backend/admin.html
+++ b/backend/admin.html
@@ -0,0 +1,91 @@
+<!doctype html>
+<html lang="zh">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>作业后台</title>
+    <style>
+      :root {
+        color-scheme: light;
+        --ink: #1f2328;
+        --paper: #fff7e6;
+        --accent: #f05a28;
+        --muted: #6b6b6b;
+      }
+      * { box-sizing: border-box; }
+      body {
+        margin: 0;
+        font-family: "Noto Serif SC", "Songti SC", serif;
+        background: var(--paper);
+        color: var(--ink);
+      }
+      header {
+        padding: 32px 40px 16px;
+        border-bottom: 1px solid rgba(0,0,0,0.1);
+      }
+      h1 {
+        margin: 0 0 6px;
+        font-size: 28px;
+      }
+      p { margin: 0; color: var(--muted); }
+      main { padding: 24px 40px 48px; }
+      table {
+        width: 100%;
+        border-collapse: collapse;
+        background: #fff;
+        border-radius: 16px;
+        overflow: hidden;
+        box-shadow: 0 12px 30px rgba(0,0,0,0.08);
+      }
+      th, td {
+        padding: 14px 16px;
+        text-align: left;
+        border-bottom: 1px solid rgba(0,0,0,0.06);
+        font-size: 14px;
+      }
+      th {
+        background: #fff1d6;
+        font-weight: 600;
+      }
+      tr:last-child td { border-bottom: none; }
+      .badge {
+        display: inline-block;
+        padding: 4px 10px;
+        border-radius: 999px;
+        background: rgba(240,90,40,0.12);
+        color: var(--accent);
+        font-weight: 600;
+      }
+    </style>
+  </head>
+  <body>
+    <header>
+      <h1>作业管理后台</h1>
+      <p>基础账号: admin / whoami139</p>
+    </header>
+    <main>
+      <table>
+        <thead>
+          <tr>
+            <th>ID</th>
+            <th>用户名</th>
+            <th>标题</th>
+            <th>评分</th>
+            <th>创建时间</th>
+          </tr>
+        </thead>
+        <tbody>
+          {{range .Assignments}}
+          <tr>
+            <td>{{.ID}}</td>
+            <td>{{.Username}}</td>
+            <td>{{.Title}}</td>
+            <td><span class="badge">{{.Score}}</span></td>
+            <td>{{.CreatedAt.Format "2006-01-02 15:04"}}</td>
+          </tr>
+          {{end}}
+        </tbody>
+      </table>
+    </main>
+  </body>
+</html>