Add post summaries, featured images and a page outro

Recreating gizmolab.net as a blog showed three things the design system
could not express, all of them ordinary blog features:

- Listings can show a summary and a "Read more" link instead of the whole
  post (theme.list_style). The summary is the source up to <!--more-->;
  without the marker a Markdown post is cut at a block boundary after 70
  words (never inside a code fence) and an HTML post is shown whole, since
  cutting hand-written markup blind would leave tags open. Computed at
  render time (Post.Excerpt/HasMore), nothing new is stored.
- A post can carry a featured image (posts.image, a library file that is
  unset when the file is deleted): a thumbnail floated beside the entry on
  listings, and on the post page above or below the text, or not at all,
  as theme.post_image says. The picker is the design page's imagepick; its
  library panel moves out of design.html into partials/imagelib.html so
  both forms share it — which also removes a stale pickAction call the
  design form's click handler would have hit.
- A page can have a closing text after its posts (pages.outro_md/html), in
  the intro's format: the per-page counterpart of the blog-wide "after the
  posts" module, for a home page that ends in a site map or a widget. The
  editor partial takes formatof to share another editor's Format row, and
  its upload field is now <name>_file so two editors fit in one form.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/internal/web/static/dashboard.css b/internal/web/static/dashboard.css
index 32561bf..f5e0fd4 100644
--- a/internal/web/static/dashboard.css
+++ b/internal/web/static/dashboard.css
@@ -208,6 +208,7 @@ table.files .copy { width: 100%; min-width: 11em; padding: 0.3em 0.4em; margin:
 /* what only makes sense with, or without, the script */
 form.js .nojs { display: none !important; }
 form:not(.js) .jsonly { display: none !important; }
+.imagepick.js .ip-nojs, .imagepick:not(.js) .ip-jsonly { display: none !important; }
 .presets { display: flex; flex-wrap: wrap; gap: 0.8em; }
 .presets .preset { width: 8.5em; margin: 0; padding: 0.55em 0.45em; background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 0.8em; font-weight: 500; text-align: center; }
 .presets .preset:hover { background: var(--surface-2); color: var(--text); border-color: var(--border-strong); }