Add an HTML mode to posts, page intros and announcements

Markdown is the default and unchanged; the editor's new Format switch
stores the text as raw HTML instead, put on the blog exactly as written.
Like the custom HTML module it is unsanitised on purpose: the escape
hatch for embeds, scripts and inline styles that Markdown cannot express.

The source column keeps holding the text in both modes and a `format`
column says how to read it, so the public templates and the feed still
print the stored `*_html`. The dashboard preview of HTML goes into a
sandboxed iframe rather than the page, because a superadmin edits other
people's blogs and their markup must never run on the dashboard origin.
Search snippets of HTML posts are cut from a tag-stripped copy.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/internal/web/static/dashboard.css b/internal/web/static/dashboard.css
index 679fdde..3ef96c2 100644
--- a/internal/web/static/dashboard.css
+++ b/internal/web/static/dashboard.css
@@ -134,6 +134,14 @@ details.help[open] summary { margin-bottom: 0.5em; color: var(--text); }
 
 /* ---- editor: toolbar, textarea and preview share one frame ------------------ */
 .editor { margin-top: 0.3em; }
+.ed-format { margin: 0 0 0.4em; font-size: 0.9em; display: flex; flex-wrap: wrap; align-items: center; gap: 0.3em 0.9em; }
+.ed-format label { display: inline-flex; align-items: center; gap: 0.3em; margin: 0; font-weight: normal; }
+.ed-format input { width: auto; margin: 0; }
+.editor.js:not(.html) .ed-htmlnote { display: none; } /* without JS the note is always there: cheap, and true */
+.editor.html .ed-md, .editor.html .ed-linkbox, .editor.html .help { display: none; }
+.editor.html .ed-group { border-right: 0; } /* Insert file stands alone */
+.editor.html textarea { font-family: var(--mono); font-size: 0.9em; }
+.ed-preview-frame { display: block; width: 100%; min-height: 10em; border: 1px solid var(--border-strong); border-radius: 0 0 var(--radius-sm) var(--radius-sm); background: #fff; }
 .editor textarea { margin-top: 0; display: block; }
 .editor.js textarea { border-top-left-radius: 0; border-top-right-radius: 0; }
 .ed-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 0.25em; padding: 0.35em 0.4em; background: var(--surface-2); border: 1px solid var(--border-strong); border-bottom: 0; border-radius: var(--radius-sm) var(--radius-sm) 0 0; }