From dd905888cbf016a76457b1c17e2bb8d57143645f Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Sun, 27 Sep 2026 17:54:21 +0300
Subject: [PATCH] =?UTF-8?q?test(mutation):=20=D1=81=D0=B2=D0=B8=D0=B4?=
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#659 закрыл реестр браузерных гвардов ровно на 200 и проверяет число
точно: два новых смок-свидетеля #676 подняли его до 202, и юниты на
ребейзнутом кандидате покраснели («browser guard inventory is reviewed,
capped and exact»).

Оба инварианта — проводка Lit-шаблонов, которую без браузера не
импортировать, но можно засвидетельствовать по исходнику, как #659 сделал
для прежних трёх лестничных мутантов: подавление синтезированного click
после жеста (`_suppressClick` на один тик в конце протяжки и жеста узла,
`@click=${stop}` на обоих видах узлов) и условие подсказки Просмотра
(`if (!active) return;` — тот же признак, что делает лестницу ссылкой).
Мутанты переведены в группу `unitGuard('test/stairs-box.test.mjs')`,
свидетель — новый тест в `mutation-browser-offload.test.mjs`; поведение в
Chromium по-прежнему держит `demo/smoke_stairs.mjs` (AC6, AC8).

Issue: #676
User-Visible: no
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
---
 scripts/mutation-registry.mjs          |  6 ++++++
 test/mutation-browser-offload.test.mjs | 24 ++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/scripts/mutation-registry.mjs b/scripts/mutation-registry.mjs
index c20fada0..e4b0c29c 100644
--- a/scripts/mutation-registry.mjs
+++ b/scripts/mutation-registry.mjs
@@ -13149,6 +13149,12 @@ const UNIT_GUARD_GROUPS = [
     'stairs-link-auto-creates-target-object',
     'stairs-broken-targets-become-active',
   ]],
+  // #676: gesture-click suppression and the tooltip's `active` gate are template
+  // wiring; the box model beside them is pure and tested in stairs-box.test.mjs.
+  [unitGuard('test/stairs-box.test.mjs'), [
+    'stairs-gesture-click-reaches-plan-tool',
+    'stairs-view-tooltip-ignores-target-state',
+  ]],
   [unitGuard('test/device-hit-owner.test.mjs'), [
     'device-hit-scroll-observer-disabled',
   ]],
diff --git a/test/mutation-browser-offload.test.mjs b/test/mutation-browser-offload.test.mjs
index 50221128..d8381090 100644
--- a/test/mutation-browser-offload.test.mjs
+++ b/test/mutation-browser-offload.test.mjs
@@ -150,3 +150,27 @@ test('#659 room gear drag keeps the click suppression window after a real move',
   contains('src/room-gear-drag.ts',
     'this.suppressClickUntil = performance.now() + 700;');
 });
+
+test('#676 stair gestures swallow the synthesized click and the View tooltip keeps the link condition', () => {
+  // Gesture → click suppression: the drag end (draft or handle) arms the host's
+  // `_suppressClick` for one tick, and every frame handle stops its own click.
+  // `demo/smoke_stairs.mjs` proves the behaviour in Chromium (AC6/AC8); this is
+  // the Node witness for the wiring that Lit templates cannot expose.
+  const editor = contains('src/stairs-editor.ts',
+    '    this.owner._suppressClick = true;\n'
+      + '    setTimeout(() => { this.owner._suppressClick = false; }, 0);\n',
+    '      this.draft = null;\n      this.swallowNextClick();\n',
+    '    if (!drag || drag.pid !== event.pointerId) return false;\n    this.swallowNextClick();\n',
+    "@pointerdown=${(event: PointerEvent) => this.pointerDown(event, stair, 'resize', { sx: handle.sx, sy: handle.sy })}\n"
+      + '        @click=${stop}></circle>',
+    "@pointerdown=${(event: PointerEvent) => this.pointerDown(event, stair, 'rotate')}\n"
+      + '          @click=${stop}></circle>',
+  );
+  assert.equal((editor.match(/@click=\$\{stop\}/g) || []).length, 2, 'both handle kinds stop their click');
+  // Tooltip only where the stair is a link: the same `active` that gates navigation.
+  const view = contains('src/stairs-view.ts',
+    '      const tip = (event: PointerEvent): void => {\n        if (!active) return;\n',
+    "this.owner._showTip(event, this.owner._t('stairs.tooltip_navigate', { title: targetTitle }), '');",
+  );
+  assert.doesNotMatch(view, /const tip = \(event: PointerEvent\): void => \{\n\s*this\.owner\._showTip/);
+});