fix: respect DEFAULT_SETTINGS provider and use effective provider for URL writes

- useEffectiveSearchProvider falls back to DEFAULT_SETTINGS.searchProvider
  (not hardcoded 'algolia') so test env (default 'npm') no longer mismatches
  SSR vs hydration.
- useGlobalSearch URL-write paths now use the effective provider so a
  ?p= override survives subsequent keystrokes/Enter.

Author: Adebesin-Cell

app/composables/useGlobalSearch.ts

@@ -8,7 +8,6 @@ const SEARCH_DEBOUNCE_MS = 100
 
 export function useGlobalSearch(place: 'header' | 'content' = 'content') {
   const { settings } = useSettings()
-  const { searchProvider } = useSearchProvider()
   const searchProviderValue = useEffectiveSearchProvider()
 
   const router = useRouter()
@@ -81,7 +80,7 @@ export function useGlobalSearch(place: 'header' | 'content' = 'content') {
     committedSearchQuery.value = searchQuery.value
     // When instant search is off the debounce queue is empty, so call directly
     if (!settings.value.instantSearch) {
-      updateUrlQueryImpl(searchQuery.value, searchProvider.value)
+      updateUrlQueryImpl(searchQuery.value, searchProviderValue.value)
     } else {
       updateUrlQuery.flush()
     }
@@ -98,9 +97,9 @@ export function useGlobalSearch(place: 'header' | 'content' = 'content') {
 
       // Leading debounce implementation as it doesn't work properly out of the box (https://github.com/unjs/perfect-debounce/issues/43)
       if (!updateUrlQuery.isPending()) {
-        updateUrlQueryImpl(value, searchProvider.value)
+        updateUrlQueryImpl(value, searchProviderValue.value)
       }
-      updateUrlQuery(value, searchProvider.value)
+      updateUrlQuery(value, searchProviderValue.value)
     },
   })
 

app/composables/useSettings.ts

@@ -239,8 +239,8 @@ export function useEffectiveSearchProvider() {
     const p = normalizeSearchParam(route.query.p)
     if (p === 'npm') return 'npm'
     if (p === 'algolia') return 'algolia'
-    if (storedProviderReady.value && searchProvider.value === 'npm') return 'npm'
-    return 'algolia'
+    if (storedProviderReady.value) return searchProvider.value === 'npm' ? 'npm' : 'algolia'
+    return DEFAULT_SETTINGS.searchProvider
   })
 }