feat: initial postcard manager - FastAPI + Jinja2 + SQLite

app/templates/profiles.html

@@ -0,0 +1,33 @@
+{% extends "base.html" %}
+{% block title %}Profiles - Postcard Manager{% endblock %}
+{% block content %}
+<div class="section-header">
+    <h1>Profiles</h1>
+</div>
+<div class="inline-form">
+    <form method="post" action="/profiles" class="form-row">
+        <input type="text" name="nickname" placeholder="新 Profile 昵称" required>
+        <button type="submit" class="btn btn-primary">添加</button>
+    </form>
+</div>
+{% if profiles %}
+<table>
+    <thead><tr><th>昵称</th><th>创建时间</th><th>操作</th></tr></thead>
+    <tbody>
+        {% for p in profiles %}
+        <tr>
+            <td><a href="/profiles/{{ p.id }}/postcards">{{ p.nickname }}</a></td>
+            <td>{{ p.created_at.strftime('%Y-%m-%d %H:%M') }}</td>
+            <td>
+                <form method="post" action="/profiles/{{ p.id }}/delete" class="inline">
+                    <button type="submit" class="btn btn-danger btn-sm" onclick="return confirm('确定删除该 Profile 及其所有明信片？')">删除</button>
+                </form>
+            </td>
+        </tr>
+        {% endfor %}
+    </tbody>
+</table>
+{% else %}
+<p class="empty">还没有 Profile。</p>
+{% endif %}
+{% endblock %}