Add a rule under page and post titles, and tags shown with a # in front

Two Design tab options in the Posts section. The title rule reuses the
header rule's kinds (line, dots, stripes): a body class blog.css draws
from — width and style only, so the theme CSS's link colour is not reset —
ending at a floated thumbnail instead of running under it. The tag hash is
applied everywhere tags are listed: under posts, in both tag modules and in
the tag page's title.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sd8UPWrvyYCLj97JexNw3A

1 files changed, 2 insertions, 1 deletions

diff --git a/README.md b/README.md
index b6adffe..800c30d 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,8 @@ Server-rendered HTML, no JavaScript required, works on old browsers and phones.
 - **Design** tab: one form, one Save, organised by part of the blog — colours & fonts
   (schemes, background colour/image, text and link colours, fonts — built-in
   stacks or your own uploaded WOFF2/WOFF/TTF/OTF files), header, menu,
-  content, side columns, footer, logo & site icon. The page is five areas — header,
+  content (dates, summaries, a rule under titles — line, dots or stripes — and
+  tags shown as #tag), side columns, footer, logo & site icon. The page is five areas — header,
   left column, main content, right column, footer — each holding modules in any
   order: blog title, logo, menu, archive (posts by year and month), recent posts,
   tags (with counts), tag cloud, a search box (finds posts by title and text, any