test: harden resize capture verification

Issue: #293
User-Visible: no

demo/smoke_resize_pointer_real_plan.mjs

@@ -80,6 +80,7 @@ const target = await page.evaluate(() => {
     start: [rect.left + rect.width / 2, rect.top + rect.height / 2],
     end: screen(cx + 10 * (1000 / 240), cy),
     mappedStart: screen(cx, cy),
+    hitWidth: rect.width,
     count: handles.length,
   };
 });
@@ -148,9 +149,10 @@ if (target) {
   // The second gesture leaves the circle by much more than its hit radius.
   // Pointer capture must keep the real browser stream alive; Esc then cancels
   // the already-visible overlay without a second persistence write.
+  const outsideDistance = Math.max(120, target.hitWidth * 2);
   await page.mouse.move(...target.start);
   await page.mouse.down();
-  await page.mouse.move(target.start[0] + 60, target.start[1], { steps: 12 });
+  await page.mouse.move(target.start[0] + outsideDistance, target.start[1], { steps: 12 });
   await settle();
   check('resize_pointer.capture_beyond_handle', await domHasSharedX(400), false);
   await page.keyboard.press('Escape');

docs/RESIZE.md

@@ -171,7 +171,8 @@ building the preview frame itself.
 - `demo/smoke_resize_pointer_real_plan.mjs`: the tracked second-floor fixture
   entering through `config/get`, real browser mouse events, ten-grid-step live
   preview and atomic commit, wall metadata, Undo, pointer capture outside the
-  handle, foreign-pointer isolation, Escape and capture-loss cancellation;
+  handle by at least two hit diameters, foreign-pointer isolation, Escape and
+  capture-loss cancellation;
 - `test/resize-optimize.test.mjs` and
   `demo/smoke_resize_outer_reconciliation.mjs`: an exact outer-wall partition
   blocks a zero-range handle, Optimize safely rehosts its windows and removes

docs/TESTING.md

@@ -43,7 +43,8 @@
       ещё байт-в-байт исходный. Pointerup создаёт одну history-команду и одну
       запись; wall count и набор толщин сохраняются; Ctrl+Z возвращает исходную
       геометрию.
-- [ ] Pointer capture продолжает жест более чем в 60 px от хэндла, чужой
+- [ ] Pointer capture продолжает жест минимум в двух диаметрах и 120 px от
+      хэндла, чужой
       pointer id игнорируется, а Escape и `lostpointercapture` возвращают DOM и
       config без дополнительной записи.
 - [ ] Невозможная физическая preview-геометрия останавливает стену на последней