Revert "peek panels: load full page editor in iframe + resize handles"

This reverts commit d13f13785b.

app/routers/board.py

@@ -946,9 +946,7 @@ async def delete_page(request: Request, page_id: int):
 
 @router.get("/pages/{page_id}", response_class=HTMLResponse)
 async def view_page(request: Request, page_id: int):
-    """Render a page as HTML, or a file viewer for uploaded files.
-    ?embed=1 — minimal mode for side peek (no sidebar/topbar)."""
-    embed = request.query_params.get("embed") == "1"
+    """Render a page as HTML, or a file viewer for uploaded files."""
     from jinja2 import Environment, FileSystemLoader
     env = Environment(loader=FileSystemLoader("app/templates"))
     with get_conn() as conn:
@@ -1005,8 +1003,7 @@ async def view_page(request: Request, page_id: int):
            "page_data": page_data,
            "breadcrumb_items": nav_crumbs,
            "nav_workspace_id": page.get("workspace_id") or 0,
-           "nav_page_id": page_id,
-           "embed_mode": embed}
+           "nav_page_id": page_id}
     template = env.get_template("page_editor.html")
     response = template.render(**ctx)
     return HTMLResponse(content=response, headers={"Cache-Control": "no-store, max-age=0"})