chore: clearer organizational distinction between data-generated (dynamic) pages and strictly markdown ones

src/pages/main/books/book.html

@@ -1,61 +0,0 @@
----
-layout: default
-pagination:
-  data: books.all
-  size: 1
-  alias: book
-permalink: "{{ book.url }}/index.html"
-isbn: {{ book.isbn }}
-schema: book
----
-{%- capture alt -%}
-  {{ book.title }}{% if book.authors %}By {{ book.authors }}{% endif %}
-{%- endcapture -%}
-<a class="back-link-header link-icon" href="/books" title="Go back to the books index page">{% tablericon "arrow-left" "Go back to the books index page" %} Back to books</a>
-<article class="book-focus">
-  <div class="book-display">
-    <img
-      srcset="
-        https://cdn.coryd.dev{{ book.image }}?class=verticalsm 200w,
-        https://cdn.coryd.dev{{ book.image }}?class=verticalmd 400w,
-        https://cdn.coryd.dev{{ book.image }}?class=verticalbase 800w,
-        https://cdn.coryd.dev{{ book.image }}?class=verticallg 1200w
-      "
-      sizes="(max-width: 450px) 203px,
-        (max-width: 850px) 406px,
-        (max-width: 1000px) 812px,
-        1624px"
-      src="https://cdn.coryd.dev{{ book.image }}?class=verticallg"
-      alt="{{ alt }}"
-      loading="eager"
-      decoding="async"
-      width="200"
-      height="307"
-    />
-    <div class="book-meta">
-      <p class="title"><strong>{{ book.title }}</strong></p>
-      {% if book.rating %}<p>{{ book.rating }}</p>{% endif %}
-      {% if book.author %}
-        <p class="sub-meta">By {{ book.author }}</p>
-      {% endif %}
-      {% if book.status == 'finished' %}
-        <p class="sub-meta">Finished on: {{ book.date | date: "%B %e, %Y" }}</p>
-      {% endif %}
-      {% unless book.status == 'finished' %}
-        {%- assign percentage = book.progress | append: '%' -%}
-        {% render "partials/media/progress-bar.liquid", percentage:percentage %}
-      {% endunless %}
-      <p class="sub-meta"><a href="https://openlibrary.org/isbn/{{ book.isbn }}" title="View {{ book.title | escape }} on Open Library">View on Open Library</a></p>
-    </div>
-  </div>
-  {% if book.review %}
-    {% render "partials/blocks/banners/warning.liquid", text: "There are probably spoilers after this banner — this is a warning about them." %}
-    <h3>My thoughts</h3>
-    {{ book.review | markdown }}
-    <hr />
-  {% endif %}
-  {% if book.description %}
-    <h3>Overview</h3>
-    {{ book.description | markdown }}
-  {% endif %}
-</article>