feat(showcase): add public showcase page with per-profile/per-postcard visibility controls

app/templates/profiles.html

@@ -52,6 +52,7 @@
             <span class="profile-card-date">创建于 {{ p.created_at.strftime('%Y-%m-%d') }}</span>
             <div class="profile-card-actions">
                 <a href="/profiles/{{ p.id }}/postcards" class="btn btn-primary btn-sm">查看明信片</a>
+                <a href="/profiles/{{ p.id }}/showcase" class="btn btn-sm">展示管理</a>
                 <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「{{ p.nickname }}」及其所有明信片？')">删除</button>
                 </form>

app/templates/settings.html

@@ -5,6 +5,13 @@
     <h1>用户设置</h1>
 </div>
 
+<div class="form-card" style="margin-bottom:1.5rem">
+    <div style="display:flex;align-items:center;justify-content:space-between">
+        <h3>展示设置</h3>
+        <a href="/showcase/manage" class="btn btn-primary btn-sm">全局展示设置</a>
+    </div>
+</div>
+
 {% if success %}
 <div class="alert alert-success">{{ success }}</div>
 {% endif %}

app/templates/showcase.html

@@ -0,0 +1,123 @@
+{% extends "base.html" %}
+{% block title %}{{ profile_user.username }} 的展示页 - 明信片管理器{% endblock %}
+{% block content %}
+<div class="section-header">
+    <h1>📮 {{ profile_user.username }} 的明信片</h1>
+</div>
+
+{% set has_content = (sent_all|length + received_all|length) > 0 %}
+{% if not has_content %}
+<div class="empty-state">
+    <p>暂无展示内容</p>
+</div>
+{% else %}
+
+<div class="tabs" id="tabs">
+    <button class="tab active" onclick="switchTab('sent')">发出 ({{ sent_all|length }})</button>
+    <button class="tab" onclick="switchTab('received')">收到 ({{ received_all|length }})</button>
+</div>
+
+<div id="tab-sent" class="tab-panel">
+{% if mode == 'flat' %}
+    <div class="showcase-grid">
+    {% for pc in sent_all %}
+        <div class="showcase-card">
+            {% if pc.image_front %}
+            <img src="{{ pc.image_front }}" alt="" class="showcase-card-img">
+            {% else %}
+            <div class="showcase-card-img placeholder-img">📷</div>
+            {% endif %}
+            <div class="showcase-card-body">
+                <strong>{{ pc.card_number }}</strong>
+                <div class="showcase-card-meta">
+                    <span>{{ pc.country|flag }} {{ pc.country or '' }}</span>
+                    {% if pc.send_time %}<span>{{ pc.send_time.strftime('%Y-%m-%d') }}</span>{% endif %}
+                </div>
+            </div>
+        </div>
+    {% endfor %}
+    </div>
+{% else %}
+    {% for g in profile_groups %}
+    {% if g.sent %}
+    <h3 style="margin:1rem 0 .75rem;font-size:.95rem;color:var(--text-muted)">{{ g.profile.nickname }}</h3>
+    <div class="showcase-grid">
+        {% for pc in g.sent %}
+        <div class="showcase-card">
+            {% if pc.image_front %}
+            <img src="{{ pc.image_front }}" alt="" class="showcase-card-img">
+            {% else %}
+            <div class="showcase-card-img placeholder-img">📷</div>
+            {% endif %}
+            <div class="showcase-card-body">
+                <strong>{{ pc.card_number }}</strong>
+                <div class="showcase-card-meta">
+                    <span>{{ pc.country|flag }} {{ pc.country or '' }}</span>
+                    {% if pc.send_time %}<span>{{ pc.send_time.strftime('%Y-%m-%d') }}</span>{% endif %}
+                </div>
+            </div>
+        </div>
+        {% endfor %}
+    </div>
+    {% endif %}
+    {% endfor %}
+{% endif %}
+</div>
+
+<div id="tab-received" class="tab-panel" style="display:none">
+{% if mode == 'flat' %}
+    <div class="showcase-grid">
+    {% for pc in received_all %}
+        <div class="showcase-card">
+            {% if pc.image_front %}
+            <img src="{{ pc.image_front }}" alt="" class="showcase-card-img">
+            {% else %}
+            <div class="showcase-card-img placeholder-img">📷</div>
+            {% endif %}
+            <div class="showcase-card-body">
+                <strong>{{ pc.card_number }}</strong>
+                <div class="showcase-card-meta">
+                    <span>{{ pc.country|flag }} {{ pc.country or '' }}</span>
+                    {% if pc.receive_time %}<span>{{ pc.receive_time.strftime('%Y-%m-%d') }}</span>{% endif %}
+                </div>
+            </div>
+        </div>
+    {% endfor %}
+    </div>
+{% else %}
+    {% for g in profile_groups %}
+    {% if g.received %}
+    <h3 style="margin:1rem 0 .75rem;font-size:.95rem;color:var(--text-muted)">{{ g.profile.nickname }}</h3>
+    <div class="showcase-grid">
+        {% for pc in g.received %}
+        <div class="showcase-card">
+            {% if pc.image_front %}
+            <img src="{{ pc.image_front }}" alt="" class="showcase-card-img">
+            {% else %}
+            <div class="showcase-card-img placeholder-img">📷</div>
+            {% endif %}
+            <div class="showcase-card-body">
+                <strong>{{ pc.card_number }}</strong>
+                <div class="showcase-card-meta">
+                    <span>{{ pc.country|flag }} {{ pc.country or '' }}</span>
+                    {% if pc.receive_time %}<span>{{ pc.receive_time.strftime('%Y-%m-%d') }}</span>{% endif %}
+                </div>
+            </div>
+        </div>
+        {% endfor %}
+    </div>
+    {% endif %}
+    {% endfor %}
+{% endif %}
+</div>
+
+<script>
+function switchTab(name) {
+    document.querySelectorAll('.tab').forEach(function(t) { t.classList.remove('active'); });
+    document.querySelectorAll('.tab-panel').forEach(function(p) { p.style.display = 'none'; });
+    event.currentTarget.classList.add('active');
+    document.getElementById('tab-' + name).style.display = '';
+}
+</script>
+{% endif %}
+{% endblock %}

app/templates/showcase_manage.html

@@ -0,0 +1,78 @@
+{% extends "base.html" %}
+{% block title %}展示管理 - 明信片管理器{% endblock %}
+{% block content %}
+<div class="section-header">
+    <div class="detail-title-row">
+        <a href="/profiles" class="btn btn-back">←</a>
+        <h1>展示管理</h1>
+    </div>
+</div>
+
+<div class="form-card">
+    <h3 style="margin-bottom:.75rem">全局展示设置</h3>
+    <form method="post" action="/showcase/manage">
+        <label>展示页面模式</label>
+        <select name="showcase_mode">
+            <option value="profile" {% if user.showcase_mode == 'profile' %}selected{% endif %}>按 Profile 分类</option>
+            <option value="flat" {% if user.showcase_mode == 'flat' %}selected{% endif %}>全部合并</option>
+        </select>
+        <div class="form-actions">
+            <button type="submit" class="btn btn-primary">保存全局设置</button>
+        </div>
+    </form>
+    <p class="form-hint" style="margin-top:.5rem;font-size:.8rem;color:var(--text-muted)">
+        公开展示页地址：<a href="/u/{{ user.username }}" target="_blank">/u/{{ user.username }}</a>
+    </p>
+</div>
+
+<div style="margin-top:1.5rem">
+    <h2 style="font-size:1rem;margin-bottom:1rem">各 Profile 展示设置</h2>
+    {% if profiles %}
+    {% for p in profiles %}
+    {% set pc_list = profile_cards.get(p.id, []) %}
+    <div class="showcase-profile" style="background:var(--card-bg);border:1px solid var(--border);border-radius:10px;padding:1rem;margin-bottom:.75rem">
+        <div style="display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem">
+            <strong>{{ p.nickname }}</strong>
+            <span class="badge" style="{% if p.showcase_enabled %}background:var(--sent){% else %}background:var(--text-muted){% endif %}">{% if p.showcase_enabled %}展示中{% else %}未开启{% endif %}</span>
+        </div>
+        <form method="post" action="/profiles/{{ p.id }}/showcase" style="display:flex;flex-wrap:wrap;gap:.75rem;align-items:flex-end">
+            <div style="display:flex;flex-direction:column;gap:.25rem">
+                <label style="margin:0;font-size:.78rem">开启展示</label>
+                <label class="toggle-switch">
+                    <input type="checkbox" name="showcase_enabled" value="1" {% if p.showcase_enabled %}checked{% endif %} onchange="this.form.submit()">
+                    <span class="toggle-slider"></span>
+                </label>
+            </div>
+            <div style="display:flex;flex-direction:column;gap:.25rem">
+                <label style="margin:0;font-size:.78rem">展示内容</label>
+                <select name="showcase_visible" onchange="this.form.submit()">
+                    <option value="both" {% if p.showcase_visible == 'both' %}selected{% endif %}>发出 + 收到</option>
+                    <option value="sent" {% if p.showcase_visible == 'sent' %}selected{% endif %}>仅发出</option>
+                    <option value="received" {% if p.showcase_visible == 'received' %}selected{% endif %}>仅收到</option>
+                </select>
+            </div>
+        </form>
+        {% if p.showcase_enabled and pc_list %}
+        <div style="margin-top:.75rem;border-top:1px solid var(--border);padding-top:.75rem">
+            <p style="font-size:.8rem;color:var(--text-muted);margin-bottom:.5rem">单张明信片展示控制（关闭展示后可单独隐藏）：</p>
+            {% for pc in pc_list %}
+            <form method="post" action="/postcards/{{ pc.id }}/showcase-toggle" style="display:inline-flex;align-items:center;gap:.3rem;margin-right:.75rem;margin-bottom:.3rem;font-size:.8rem">
+                <span>{{ pc.card_number }}</span>
+                <label class="toggle-switch toggle-sm">
+                    <input type="checkbox" name="showcase_hidden" value="1" {% if pc.showcase_hidden %}checked{% endif %} onchange="this.form.submit()">
+                    <span class="toggle-slider"></span>
+                </label>
+                {% if pc.showcase_hidden %}<span style="color:var(--text-muted);font-size:.75rem">隐藏</span>{% endif %}
+            </form>
+            {% endfor %}
+        </div>
+        {% endif %}
+    </div>
+    {% endfor %}
+    {% else %}
+    <div class="empty-state">
+        <p>暂无 Profile，请先创建</p>
+    </div>
+    {% endif %}
+</div>
+{% endblock %}