fix(web): clamp wgpu surface to CSS pixels on HiDPI to prevent wasm panic

Root cause: fit_canvas_to_parent requests a wgpu surface sized in
physical pixels (CSS pixels × devicePixelRatio). On HiDPI displays
(DPR ≈ 2) the physical size (e.g. 2612×1469) exceeds WebGL2's per-
dimension texture limit of 2048, triggering a wgpu validation panic
that kills the WASM thread immediately on the first window resize.

Fix: add `resolution: WindowResolution::default().with_scale_factor_override(1.0)`
to the primary window so Bevy uses CSS/logical pixels as the surface
dimensions. For a 1306×734 CSS viewport this keeps the framebuffer well
within 2048 regardless of devicePixelRatio.

Also remove the temporary [drag] console logging added in the previous
commit — the panic was causing drag to never run, not a hit-test bug.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

solitaire_engine/src/input_plugin.rs

@@ -621,35 +621,15 @@ fn start_drag(
     {
         return;
     }
-    let Some(layout) = layout else {
-        bevy::log::warn!("[drag] no layout — skipping");
-        return;
-    };
+    let Some(layout) = layout else { return };
     let Some(world) = cursor_world(&windows, &cameras) else {
-        bevy::log::warn!("[drag] cursor_world returned None (no camera?)");
         return;
     };
 
     // Don't pick up the stock — that is handled by handle_stock_click.
     let Some((pile, stack_index, card_ids)) = find_draggable_at(world, &game.0, &layout.0) else {
-        bevy::log::info!(
-            "[drag] no draggable at world {:?} — stock={:?} waste_len={} tab_lens={:?}",
-            world,
-            layout.0.pile_positions.get(&KlondikePile::Stock),
-            game.0.waste_cards().len(),
-            [
-                game.0.pile(KlondikePile::Tableau(Tableau::Tableau1)).len(),
-                game.0.pile(KlondikePile::Tableau(Tableau::Tableau2)).len(),
-                game.0.pile(KlondikePile::Tableau(Tableau::Tableau3)).len(),
-                game.0.pile(KlondikePile::Tableau(Tableau::Tableau4)).len(),
-                game.0.pile(KlondikePile::Tableau(Tableau::Tableau5)).len(),
-                game.0.pile(KlondikePile::Tableau(Tableau::Tableau6)).len(),
-                game.0.pile(KlondikePile::Tableau(Tableau::Tableau7)).len(),
-            ]
-        );
         return;
     };
-    bevy::log::info!("[drag] started: pile={:?} stack_index={} cards={:?}", pile, stack_index, card_ids);
 
     let bottom_pos = card_position(&game.0, &layout.0, &pile, stack_index);