Add ONE new inner page to an existing site that already has a design (create_site / create_site_from_design first). Two modes, chosen by whether you pass `code`:
• MONDOVO WRITES IT (no `code`): Mondovo's AI generates the page to match the site's theme, header and footer. Give a `description` of what the page is for. Optional `nav_placement` ("main" header menu — the default, "footer", or "none") and `nav_label`: only this page's link is added; existing menu items are never changed. Returns a `job_id` immediately; poll get_job every ~10s until "completed" (~45-90s). Runs server-side even if this conversation ends. Counts as an AI refinement.
• YOU WROTE IT (pass `code`): the page you authored is added as-is — no AI, no credits, no job. Send the COMPLETE TSX (same authoring contract as update_variation_file). Nothing wraps your page in the site's chrome, so build it the way this design's existing pages are built — read_design and copy an existing page's imports (usually <ThemeStyles />, <Header /> and <Footer /> from './ThemeStyles', './Header', './Footer'). Put the page's own text in `content` under NEW top-level keys, conventionally one key page_<slug> (e.g. { "page_marketing": {...} } for /marketing); the code reads them as content.page_marketing. Your code may also read keys the site already has, but `content` may not redefine them. Optional `seo` (title, description, structured_data), `nav_placement` ("main" header menu — the default, "footer", or "none") and `nav_label`. The page is validated with the same checks update_variation_file runs (content first, then code); a refusal writes NOTHING and returns the issues. A slug, file name or content key the design already has is refused — to change an EXISTING page use update_variation_file / patch_variation_content instead. On success it returns the page's slug, file and content key plus `how_to_edit`, and lands as one entry in version history (`version`; `history_warning` means it saved but was not recorded). Nothing is live until publish_site.
To try an alternative version of an EXISTING page without touching the live one, use create_page_draft, not this tool.
ON A SITE THAT STILL HOLDS SEVERAL DESIGNS this builds the site: Mondovo copies the chosen design into the working site (or reuses the copy made earlier), adds to that, and the response carries its new `site_id` and a `build_transition` — relay its `tell_user` and use the new site_id from then on. Pass `variation_id` (from list_variations) for the design the user picked; omitted, Mondovo uses the design already built or the only one edited, and otherwise answers `choose_design` so you can ask the user.
