chore(visual): remove temporary Extension anchor logging

src/app/view/mod.rs

@@ -968,30 +968,6 @@ bg={bg_ms:.1}ms n={view_count}"
                     let (base, tip) = ost_project_ray(origin, dir, rot, eye, rect)?;
                     Some(iced::Point::new(tip.x - base.x, tip.y - base.y))
                 });
-            // Temporary visual diagnostic for the Extension-origin drift.
-            // Enable explicitly with OCS_EXT_DIAG=1; normal rendering is unchanged.
-            #[cfg(not(target_arch = "wasm32"))]
-            if std::env::var_os("OCS_EXT_DIAG").is_some() {
-                static SAMPLES: std::sync::atomic::AtomicUsize =
-                    std::sync::atomic::AtomicUsize::new(0);
-                if let Some(hit) = tab
-                    .snap_result
-                    .filter(|hit| hit.snap_type == crate::snap::SnapType::Extension)
-                {
-                    if SAMPLES.fetch_add(1, std::sync::atomic::Ordering::Relaxed) % 12 == 0 {
-                        eprintln!(
-                            "[EXTDIAG] screen={:?} engine_base={:?} drawn_base={:?}                              origin_world={:?} snap_world={:?} dir_world={:?}                              captured_points={:?}",
-                            hit.screen,
-                            hit.extension_base,
-                            snap_ext_base,
-                            hit.extension_origin,
-                            hit.world,
-                            hit.extension_dir,
-                            self.snapper.tracking_points
-                        );
-                    }
-                }
-            }
             let ost_points: Vec<crate::ui::overlay::OstTrackPoint> =
                 if let Some((view_rot, eye, ob)) = otrack_proj {
                     self.snapper