fix: correct TestKoboAnalyticsGettests request format to match handler

The test was sending a single object with a "meta" field, but the handler
expects an array of KoboAnalyticsTest objects (matching other Kobo endpoints).

Changed:
- Removed unsupported "meta" field
- Converted single object to array format
- Now matches Kobo protocol pattern used by /markup and /bookmark endpoints

All Kobo tests now pass:
- TestKoboInitialization ✅
- TestKoboLibrarySync ✅
- TestKoboMarkupSync ✅
- TestKoboBookmarkSync ✅
- TestKoboAnalyticsGettests ✅
- TestKoboDeviceHeaderParsing ✅

cmd/server/tests/kobo_test.go

@@ -215,14 +215,13 @@ func TestKoboAnalyticsGettests(t *testing.T) {
 		deviceSetup := setupDeviceTest(t)
 		koboDevice := deviceSetup.CreateDevice(t, "Test Kobo", "kobo", "kobo-clara-analytics")
 
-		reqBody := map[string]interface{}{
-			"meta": map[string]string{
-				"name": "Kobo Analytics Tests",
+		reqBody := []map[string]interface{}{
+			{
+				"ContentId":        mediaItemID,
+				"ReadingEvent":     "Reading",
+				"RemainingTimeMin": 180,
+				"PercentRead":      67.8,
 			},
-			"ContentId":        mediaItemID,
-			"ReadingEvent":     "Reading",
-			"RemainingTimeMin": 180,
-			"PercentRead":      67.8,
 		}
 
 		body, _ := json.Marshal(reqBody)