feat: rebuild site content management

Replace legacy FAQ, downloads, and release flows with project and blog publishing. Add configurable branding and theme fields plus clean-start Compose seeding support.

templates/pages/blog_list.html

@@ -0,0 +1,47 @@
+{% extends "base.html" %}
+
+{% block title %}Blog{% endblock %}
+{% block meta_description %}News, research notes, and community updates from {{ site_branding.site_name }}.{% endblock %}
+
+{% block content %}
+<section class="page-hero" aria-labelledby="blog-heading">
+  <div class="page-hero-blobs" aria-hidden="true">
+    <div class="blob blob--1"></div>
+    <div class="blob blob--2"></div>
+  </div>
+  <div class="container">
+    <div class="page-hero-content">
+      <div class="section-badge">Insights and Updates</div>
+      <h1 class="page-hero-title" id="blog-heading">Blog</h1>
+      <p class="page-hero-subtitle">Research stories, project updates, and practical ideas from our community.</p>
+    </div>
+  </div>
+</section>
+
+<section class="section" aria-label="Blog posts">
+  <div class="container">
+    {% if posts %}
+    <div class="blog-grid">
+      {% for post in posts %}
+      <article class="blog-card glass-card fade-in">
+        {% if post.cover_image %}
+        <a href="{{ post.get_absolute_url }}" class="blog-card-image">
+          <img src="{{ post.cover_image.url }}" alt="{{ post.cover_image_alt|default:post.title }}" loading="lazy" />
+        </a>
+        {% endif %}
+        <div class="blog-card-body">
+          <p class="blog-meta">{{ post.published_at|date:"F j, Y" }}{% if post.author_name %} · {{ post.author_name }}{% endif %}</p>
+          <h2 class="blog-card-title"><a href="{{ post.get_absolute_url }}">{{ post.title }}</a></h2>
+          {% if post.excerpt %}<p class="blog-card-excerpt">{{ post.excerpt }}</p>{% endif %}
+          <a href="{{ post.get_absolute_url }}" class="link-arrow">Read article</a>
+        </div>
+      </article>
+      {% endfor %}
+    </div>
+    {% include "partials/_pagination.html" with page_obj=page_obj %}
+    {% else %}
+    <div class="empty-state-block glass-card"><p>No blog posts have been published yet.</p></div>
+    {% endif %}
+  </div>
+</section>
+{% endblock %}