feat: add "Confirmed by at least 1 service" filter to QSO view

- Add 'any' confirmation type filter showing QSOs confirmed by LoTW OR DCL
- Backend logic: lotwQslRstatus = 'Y' OR dclQslRstatus = 'Y'
- Frontend dropdown option positioned after "All QSOs"
- Shows all QSOs confirmed by at least one service (LoTW, DCL, or both)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/backend/services/lotw.service.js

@@ -411,6 +411,11 @@ export async function getUserQSOs(userId, filters = {}, options = {}) {
       // Both confirmed: Confirmed by LoTW AND DCL
       conditions.push(eq(qsos.lotwQslRstatus, 'Y'));
       conditions.push(eq(qsos.dclQslRstatus, 'Y'));
+    } else if (filters.confirmationType === 'any') {
+      // Confirmed by at least 1 service: LoTW OR DCL
+      conditions.push(
+        sql`(${qsos.lotwQslRstatus} = 'Y' OR ${qsos.dclQslRstatus} = 'Y')`
+      );
     } else if (filters.confirmationType === 'none') {
       // Not confirmed: Not confirmed by LoTW AND not confirmed by DCL
       conditions.push(

src/frontend/src/routes/qsos/+page.svelte

@@ -592,6 +592,7 @@
 
       <select bind:value={filters.confirmationType} on:change={applyFilters} class="confirmation-filter">
         <option value="all">All QSOs</option>
+        <option value="any">Confirmed by at least 1 service</option>
         <option value="lotw">LoTW Only</option>
         <option value="dcl">DCL Only</option>
         <option value="both">Both Confirmed</option>