merge: incorporate dev changes and migrate VPN widget

Resolve merge conflicts favoring our simplified caching architecture:
- cron-jobs/index.ts: keep reduced job set (no integration cron jobs)
- en.json: keep reduced cron job labels
- docker-table.tsx: keep refetch() approach, adopt dev's initialData format

Migrate new VPN widget to polling architecture:
- Remove VPN cron job and subscription-based pattern
- Simplify request handler to createIntegrationRequestHandler
- Simplify tRPC router to use getDataAsync + settleIntegrationQueries
- Convert widget from useSuspenseQuery + subscription to useQuery with polling

packages/request-handler/src/vpn.ts

@@ -0,0 +1,28 @@
+import { createLogger } from "@homarr/core/infrastructure/logs";
+import type { IntegrationKindByCategory } from "@homarr/definitions";
+import { createIntegrationAsync } from "@homarr/integrations";
+import type { VpnSummary } from "@homarr/integrations/types";
+
+import { createIntegrationRequestHandler } from "./lib/integration-request-handler";
+
+const logger = createLogger({ module: "vpnRequestHandler" });
+
+export const vpnSummaryHandler = createIntegrationRequestHandler<
+  VpnSummary | null,
+  IntegrationKindByCategory<"vpn">,
+  Record<string, never>
+>({
+  async requestAsync(integration, _input) {
+    try {
+      const integrationInstance = await createIntegrationAsync(integration);
+      return await integrationInstance.getSummaryAsync();
+    } catch (error) {
+      logger.warn("Failed to fetch VPN summary, marking as unavailable", {
+        integrationId: integration.id,
+        integrationKind: integration.kind,
+        error: error instanceof Error ? error.message : String(error),
+      });
+      return null;
+    }
+  },
+});