refactor: убрать qt_pricelist_sync_status, lot_log и лишние права БД

- Удалить все записи в qt_pricelist_sync_status (RecordSyncHeartbeat и
  ensureUserSyncStatusTable); ListUserSyncStatuses переведён на
  qt_client_schema_state
- Подавлять устаревший OFFLINE_UNVERIFIED_SCHEMA в UI когда соединение
  уже восстановлено
- Удалить все обращения к lot_log: repository/price.go, сортировка
  quote_count в component.go, UpdatePopularityScores в stats.go,
  модель LotLog

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/repository/stats.go

@@ -91,25 +91,3 @@ func (r *StatsRepository) ResetMonthlyCounters() error {
 		Update("quotes_last_30d", 0).Error
 }
 
-// UpdatePopularityScores recalculates popularity_score in qt_lot_metadata
-// based on supplier quotes from lot_log table
-func (r *StatsRepository) UpdatePopularityScores() error {
-	// Formula: popularity_score = quotes_last_30d * 3 + quotes_last_90d * 1 + quotes_total * 0.1
-	// This gives more weight to recent supplier activity
-	return r.db.Exec(`
-		UPDATE qt_lot_metadata m
-		LEFT JOIN (
-			SELECT
-				lot,
-				COUNT(*) as quotes_total,
-				SUM(CASE WHEN date >= DATE_SUB(NOW(), INTERVAL 30 DAY) THEN 1 ELSE 0 END) as quotes_last_30d,
-				SUM(CASE WHEN date >= DATE_SUB(NOW(), INTERVAL 90 DAY) THEN 1 ELSE 0 END) as quotes_last_90d
-			FROM lot_log
-			GROUP BY lot
-		) s ON m.lot_name = s.lot
-		SET m.popularity_score = COALESCE(
-			s.quotes_last_30d * 3 + s.quotes_last_90d * 1 + s.quotes_total * 0.1,
-			0
-		)
-	`).Error
-}