Fix tab selection on discovery page (#353)

* Fix: Ensure first tab is selected when no valid tab is active

Co-authored-by: jxxghp <jxxghp@163.com>

* Fix discover page tab selection logic when no tab is active

Co-authored-by: jxxghp <jxxghp@163.com>

* Fix tab selection logic in discover page lifecycle hooks

Co-authored-by: jxxghp <jxxghp@163.com>

* Remove unnecessary onMounted hook in discover page

Co-authored-by: jxxghp <jxxghp@163.com>

* Move dynamic header tab registration after tabs initialization

Co-authored-by: jxxghp <jxxghp@163.com>

* Refactor dynamic header tab registration in discover page

Co-authored-by: jxxghp <jxxghp@163.com>

* Fix tab selection logic in discover page to ensure first tab is selected

Co-authored-by: jxxghp <jxxghp@163.com>

* Update useDynamicHeaderTab to sync modelValue in tab configuration

Co-authored-by: jxxghp <jxxghp@163.com>

* Remove auto-tab selection logic from discover page

Co-authored-by: jxxghp <jxxghp@163.com>

---------

Co-authored-by: Cursor Agent <cursoragent@cursor.com>

src/composables/useDynamicHeaderTab.ts

@@ -91,6 +91,8 @@ export function useDynamicHeaderTab() {
       tabConfig.routePath = route.path
       // 确保items是最新的
       tabConfig.items = Array.isArray(config.items) ? config.items : config.items.value
+      // 确保modelValue是最新的
+      tabConfig.modelValue = config.modelValue.value
 
       if (registerDynamicHeaderTab) {
         registerDynamicHeaderTab(tabConfig)