Bring the org-ssg templates to parity with the live site

The org-ssg build rendered the right content in the wrong chrome. Closing every
difference found by comparing it against theme/templates/ and the live pages:

- base.html: Home link written by the layout rather than the site title, a
  <title> of "Page - cleberg.net" (bare "cleberg.net" on the home page, via a
  subtitle block), author/description/og meta, the RSS alternate link, four
  rel="me" identity links, favicon, skip link, <main id="main-content">,
  aria-label on the nav, and the real footer.
- home.html: the h1 is "Christian Cleberg" (the collection's title), and the
  email line has its GPG link back.
- blog.html and garden.html: the two listings carry their own prose on the live
  site — the search/RSS hint, and the garden's growth stages — so they are no
  longer sharing the generic list.html. Tag pages still use it.
- tags.html: "Browse posts by topic."
- Blog posts get the reply-by-email and Bubbles lines. org-ssg has no per-page
  template selection, so the layout keys off the page's URL prefix.
- Tags leaves the nav, which the live site does not have.

feed.xml is new: the footer links /feed.xml and nothing was generating it. It
is a collection whose template happens to be XML. Its <description> carries
each post's excerpt rather than the full rendered body, which weblorg's feed
does include — a collection template gets each entry's metadata, not its HTML.

base_url is now set, since canonical links and a feed cannot be relative. Page
links stay relative, so a preview build still works from any directory.

gpg.txt, robots.txt and salary.csv are copied in from theme/static/: weblorg
publishes that directory to the site root, and org-ssg publishes from content/,
so /gpg.txt was a 404. styles.min.css is deliberately not copied — it is
gitignored build output, and the tracked styles.css holds the same rules.

1 files changed, 36 insertions, 0 deletions

diff --git a/content/templates/feed.xml b/content/templates/feed.xml
new file mode 100644
index 0000000..0319910
--- /dev/null
+++ b/content/templates/feed.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+{#- The RSS feed at /feed.xml, mirroring theme/templates/feed.xml. A feed is read away
+    from the site that served it, so every URL here is absolute — which is what
+    `| absolute` needs [site] base_url for.
+
+    One difference from weblorg: <description> carries each post's excerpt rather than its
+    full HTML. org-ssg gives a collection template each entry's metadata, not its rendered
+    body. #}
+<rss version="2.0"
+     xmlns:content="http://purl.org/rss/1.0/modules/content/"
+     xmlns:dc="http://purl.org/dc/elements/1.1/"
+     xmlns:atom="http://www.w3.org/2005/Atom">
+  <channel>
+    <title>{{ site.title }}</title>
+    <atom:link href="{{ page.url | absolute }}" rel="self" type="application/rss+xml" />
+    <link>{{ "index.html" | absolute | replace("index.html", "") }}</link>
+    <description>{{ site.description }}</description>
+    <language>{{ site.language }}</language>
+    <webMaster>[email protected] (Christian Cleberg)</webMaster>
+{%- for post in pages %}
+    <item>
+      <title>{{ post.title }}</title>
+      <link>{{ post.url | absolute }}</link>
+      <guid isPermaLink="true">{{ post.url | absolute }}</guid>
+      <author>[email protected] (Christian Cleberg)</author>
+{%- if post.date_iso %}
+      <pubDate>{{ post.date_iso | rfc822 }}</pubDate>
+{%- endif %}
+{%- for tag in post.tags %}
+      <category>{{ tag }}</category>
+{%- endfor %}
+      <description>{{ post.excerpt }}</description>
+    </item>
+{%- endfor %}
+  </channel>
+</rss>