The embed_mode variable set in board.py context wasn't reaching
base.html through Jinja2 extends. Added document.body.classList.add
in page_editor_embed.html content block to force the class, which
triggers the CSS rules hiding sidebar, topbar, and header.
Architecture for zero code duplication:
- Extract page editor HTML into _page_editor_content.html (shared include)
- page_editor.html includes it (same behavior as before)
- page_editor_embed.html includes it with empty topbar (no header in peek)
- board.py: ?embed=1 renders page_editor_embed.html
Peek panels now load /pages/{id}?embed=1 in iframe:
- Editor renders without sidebar or header breadcrumb/actions
- Full editing capability (blocks, markdown, slash commands, save)
- Same code — one change to _page_editor_content.html updates everywhere
bruno