style: 统一导航与目录的直角满行布局

src/composables/useTheme.test.ts

@@ -113,7 +113,14 @@ describe('微信风格明暗主题', () => {
             errorColor: tokens.danger
         })
         expect(Layout).toMatchObject({ color: tokens.body, headerColor: tokens.surface, siderColor: tokens.subtle })
-        expect(Menu).toMatchObject({ itemColorActive: tokens.selected, itemTextColorActive: tokens['accent-text'] })
+        expect(Menu).toMatchObject({
+            borderRadius: '0px',
+            itemColorActive: tokens.selected,
+            itemColorActiveCollapsed: tokens.selected,
+            itemTextColorActive: tokens['accent-text']
+        })
+        // 圆角调整只用于导航，表单、普通按钮和弹窗仍保留原有主题。
+        expect(common?.borderRadius).toBe('6px')
         expect(Button?.textColorPrimary).toBe(tokens['on-accent'])
         for (const background of [common!.primaryColor!, common!.primaryColorHover!, common!.primaryColorPressed!]) {
             expect(contrast(String(Button!.textColorPrimary), background)).toBeGreaterThanOrEqual(4.5)

src/composables/useTheme.ts

@@ -94,8 +94,10 @@ export function useTheme() {
                 siderColor: subtle
             },
             Menu: {
+                borderRadius: '0px',
                 itemColorActive: selected,
                 itemColorActiveHover: selected,
+                itemColorActiveCollapsed: selected,
                 itemColorHover: dark ? '#2c2c2c' : '#e8e8e8',
                 itemTextColorActive: accentText,
                 itemTextColorActiveHover: accentText,