Add an org-ssg build alongside the weblorg one

Builds the same site with org-ssg instead of weblorg, reproducing all 182 URLs the
current .build output has, plus 13 per-tag pages it does not.

    org-ssg serve content -o /tmp/preview      # write, with live reload
    org-ssg build content -o _site --strict    # build, failing on broken links

content/ is the source because it is the URL root: content/blog/post.org publishes at
/blog/post.html. Pointing at the repository root instead would prefix every URL with
/content/ and copy build.py, publish.el and LICENSE into the site as assets.

Added:

- content/org-ssg.toml — site metadata, an explicit nav, and four generated pages:
  the home page, the blog index, the garden index, and tag pages with an index. URLs
  come from #+SLUG:, which is why 2018-11-28-aes-encryption.org still publishes at
  /blog/aes-encryption.html.
- content/templates/ — base, home, list and tags. Plain layouts using the .post-list
  classes styles.css already defines, not a port of theme/templates/, which are
  templatel and a different language.
- content/styles.css — a verbatim copy of theme/static/styles.css, because org-ssg
  publishes assets from inside its source directory. `diff` between the two should stay
  empty; consolidate them if this migration goes further.

Removed content/index.org. It held only #+title and #+description, both now [site]
settings, and a generated home page cannot share a URL with an authored one — org-ssg
fails that build rather than picking a winner. Restore with
`git checkout content/index.org`, but then the home collection needs a different output.

Nothing in the weblorg setup changed. publish.el, theme/ and build.py still work as
before, so both builds coexist until one is chosen.

Known difference: the nav renders Home, Salary, Blog, Garden, Tags — explicit source
pages come before generated ones, where the live site orders Salary last.

1 files changed, 44 insertions, 0 deletions

diff --git a/content/templates/home.html b/content/templates/home.html
new file mode 100644
index 0000000..be5a0e6
--- /dev/null
+++ b/content/templates/home.html
@@ -0,0 +1,44 @@
+{# The home page: authored prose plus the most recent posts.
+
+   A generated page, so it has no source .org file — `pages` holds the blog collection's
+   entries, newest first, and the prose lives here. This mirrors what weblorg's
+   theme/templates/index.html does today. #}
+{% extends "base.html" %}
+{% block content %}
+<section>
+<p>[ <a href="https://krz.sh">krz</a> &middot; <a href="https://audit-labs.dev">audit labs</a> ]</p>
+<p>Privacy &middot; Self-Hosting &middot; iOS</p>
+<p>I build tools, write about systems, and run my own infrastructure. Focused on privacy,
+user control, and long-term utility.</p>
+<p><a href="{{ root }}uses/index.html">Uses</a> &middot; <a href="{{ root }}now/index.html">Now</a></p>
+</section>
+
+<section>
+<h2>Recent Posts</h2>
+<p>Things I&rsquo;ve written recently.</p>
+<ul class="post-list">
+{%- for entry in pages %}
+{%- if loop.index <= 3 %}
+<li class="post-list-item">
+{%- if entry.date_iso %}<time datetime="{{ entry.date_iso }}">{{ entry.date_iso }}</time>{% endif %}
+<a href="{{ root }}{{ entry.url }}">{{ entry.title }}</a>
+</li>
+{%- endif %}
+{%- endfor %}
+</ul>
+<p><a href="{{ root }}blog/index.html">All Posts &rarr;</a></p>
+</section>
+
+<section>
+<h2>Elsewhere</h2>
+<p>Places to find me online.</p>
+<ul>
+<li>cgit (primary): <a href="https://git.krz.sh">~cmc</a></li>
+<li>GitHub (mirror): <a href="https://github.com/ccleberg">@ccleberg</a></li>
+<li>Email: <a href="mailto:[email protected]">[email protected]</a></li>
+<li>Lemmy: <a href="https://r.nf/u/cmc">@cmc</a></li>
+<li>Mastodon: <a href="https://c.im/@cmc">@cmc</a></li>
+<li>Pixelfed: <a href="https://gram.social/cmc">@cmc</a></li>
+</ul>
+</section>
+{% endblock %}