fix(game-ui): 툴팁 점선 장식을 제거한다

툴팁의 hover와 키보드 focus 동작은 유지하면서 게임 정보에 반복되던 점선·파선 밑줄을 제거한다. 실제 Chromium에서 내정보, 장수 일람, 국가 전략, NPC 선택 흐름을 검증한다.

app/game-frontend/e2e/directoryLists.spec.ts

@@ -629,6 +629,10 @@ test('nation directory reuses only the public general-directory row on hover and
         await expect(preview.locator('[data-general-card-id="10"]')).toContainText('대담');
         await expect(preview.locator('[data-directory-tooltip="card-special-domestic-10"]')).toContainText('상재');
         await expect(preview.locator('[data-directory-tooltip="card-special-war-10"]')).toContainText('귀모');
+        await expect(preview.locator('[data-directory-tooltip="card-special-domestic-10"]')).toHaveCSS(
+            'text-decoration-line',
+            'none'
+        );
         await expect(preview).not.toContainText('user-');
         await expect(preview).not.toContainText('secret');
 

app/game-frontend/e2e/inGameMenus.spec.ts

@@ -1429,6 +1429,7 @@ test('내 정보 항목과 국가 성향은 HTML 리치 툴팁을 마우스와
     const showWithMouse = async (testId: string, expectedTexts: readonly string[]) => {
         const trigger = page.locator(`[data-rich-tooltip="${testId}"]`);
         await expect(trigger).toHaveAttribute('tabindex', '0');
+        await expect(trigger).toHaveCSS('text-decoration-line', 'none');
         await trigger.hover();
         await expect(visibleTooltip).toHaveCount(1);
         await expect(visibleTooltip).toHaveAttribute('role', 'tooltip');

app/game-frontend/e2e/mainNavigation.spec.ts

@@ -2106,6 +2106,7 @@ test('main cards and command input stay inside their Ref-sized grid slots', asyn
     expect(Math.max(...nationRowHeights) - Math.min(...nationRowHeights)).toBeLessThanOrEqual(0.01);
     const strategicCell = nationCard.locator('.strategic');
     const strategicTooltip = strategicCell.getByRole('tooltip');
+    await expect(strategicCell).toHaveCSS('text-decoration-line', 'none');
     await expect(strategicTooltip).toBeHidden();
     await strategicCell.hover();
     await expect(strategicTooltip).toBeVisible();

app/game-frontend/e2e/npcPossession.spec.ts

@@ -266,6 +266,7 @@ test('renders Ref-shaped token cards, preserves keep cooldown and retries posses
     });
     const tooltip = page.locator('.npc-tooltip').first();
     const tooltipPopup = tooltip.getByRole('tooltip');
+    await expect(tooltip).toHaveCSS('text-decoration-line', 'none');
     await expect(tooltipPopup).toBeHidden();
     await tooltip.hover();
     await expect(tooltipPopup).toBeVisible();

app/game-frontend/src/components/directory/DirectoryTooltip.vue

@@ -29,8 +29,6 @@ defineProps<{
 }
 .directory-tooltip--enabled {
     cursor: help;
-    text-decoration: underline dotted rgb(150 210 255 / 85%);
-    text-underline-offset: 2px;
 }
 .directory-tooltip--enabled:focus-visible {
     border-radius: 2px;

app/game-frontend/src/components/main/NationBasicCard.vue

@@ -284,7 +284,6 @@ const displayChiefName = (chief: NationChief | undefined): string => {
 
 .strategic.has-tooltip {
     overflow: visible;
-    text-decoration: underline dashed red;
 }
 
 .cooldown-tooltip {

app/game-frontend/src/components/ui/RichTooltip.vue

@@ -97,8 +97,6 @@ watch(
 
 .rich-tooltip-trigger--enabled {
     cursor: help;
-    text-decoration: underline dotted rgb(150 210 255 / 85%);
-    text-underline-offset: 2px;
 }
 
 .rich-tooltip-trigger--enabled:focus-visible {

app/game-frontend/src/views/JoinView.vue

@@ -1733,7 +1733,6 @@ onUnmounted(() => {
 .npc-tooltip {
     position: relative;
     cursor: help;
-    text-decoration: underline dotted;
 }
 
 .npc-tooltip [role='tooltip'] {