fix: pass load_system_fonts=false to WgpuAdapter::new (Phase 6k signature)

WgpuAdapter::new gained the load_system_fonts bool in cce-ui Phase 6k; the
designer's direct call was never updated and the crate has not compiled since.

Co-Authored-By: Claude Fable 5 <[email protected]>

 src/app.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/app.rs b/src/app.rs
index e640955..9b417b6 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -2255,7 +2255,9 @@ pub(crate) fn geometry_to_spreadsheet_data(geom: &Geometry) -> (Vec<String>, Vec
 
         let display_ptr = conn.backend().display_id().as_ptr() as *mut std::ffi::c_void;
         let surface_ptr = wl_surface.id().as_ptr() as *mut std::ffi::c_void;
-        let wgpu_adapter = cce_ui::backend::WgpuAdapter::new(display_ptr, surface_ptr, pw, ph).await;
+        // Bundled fonts only (the 5th param opts into system fonts in the render
+        // FontSystem — Phase 6k; the designer's UI uses bundled families).
+        let wgpu_adapter = cce_ui::backend::WgpuAdapter::new(display_ptr, surface_ptr, pw, ph, false).await;
 
         let device = &wgpu_adapter.device;
         let queue = &wgpu_adapter.queue;