Fix BanTable to use props exclusively (complete dual state source refactoring)

- BanTable now requires all filter props (timeRange, origin, source)
- Removed useDashboardFilters() hook dependency from BanTable
- Eliminated context fallback chain using ?? operator
- Component now exclusively reads from props, never from context

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

frontend/src/components/BanTable.tsx

@@ -9,7 +9,6 @@
  */
 
 import { memo, useMemo } from "react";
-import { useDashboardFilters } from "../providers/DashboardFilterProvider";
 import {
   Badge,
   Button,
@@ -42,16 +41,16 @@ interface BanTableProps {
    * Active time-range preset — controlled by the parent `DashboardPage`.
    * Changing this value triggers a re-fetch.
    */
-  timeRange?: TimeRange;
+  timeRange: TimeRange;
   /**
    * Active origin filter — controlled by the parent `DashboardPage`.
    * Changing this value triggers a re-fetch and resets to page 1.
    */
-  origin?: BanOriginFilter;
+  origin: BanOriginFilter;
   /**
    * Data source used for the table query.
    */
-  source?: "fail2ban" | "archive";
+  source: "fail2ban" | "archive";
 }
 
 // ---------------------------------------------------------------------------
@@ -194,14 +193,10 @@ function buildBanColumns(styles: ReturnType<typeof useStyles>): TableColumnDefin
  */
 export const BanTable = memo(function BanTable({ timeRange, origin, source }: BanTableProps): React.JSX.Element {
   const styles = useStyles();
-  const context = useDashboardFilters();
-  const effectiveTimeRange = timeRange ?? context.timeRange;
-  const effectiveOrigin = origin ?? context.originFilter;
-  const effectiveSource = source ?? context.source;
   const { banItems, total, page, setPage, loading, error, refresh } = useBans(
-    effectiveTimeRange,
-    effectiveOrigin,
-    effectiveSource,
+    timeRange,
+    origin,
+    source,
   );
 
   const banColumns = useMemo(() => buildBanColumns(styles), [styles]);