fix(backup): hide unsupported database backup entries

apps/desktop/src/components/sidebar/SidebarTreeRuntimeHost.vue

@@ -174,6 +174,7 @@ import { runBatchTableTruncate } from "@/lib/table/batchTableTruncate";
 import { runBatchTableDrop } from "@/lib/table/batchTableDrop";
 import { buildSidebarDdlTemplateSql, sidebarDdlTargetsForExecutionContext } from "@/lib/sidebar/sidebarDdlTemplate";
 import { sidebarStructureExportTargets } from "@/lib/sidebar/sidebarExportRuntime";
+import { supportsScheduledDatabaseBackup } from "@/lib/backup/scheduledDatabaseBackup";
 import { isTauriRuntime } from "@/lib/backend/tauriRuntime";
 import { copyToClipboard } from "@/lib/common/clipboard";
 import { rankSavedSqlHistory, type SavedSqlHistoryScope } from "@/lib/savedSql/savedSqlHistory";
@@ -4076,6 +4077,13 @@ const canExportAllDatabases = computed(() => {
   return !["redis", "mongodb", "dynamodb", "elasticsearch", "easysearch", "meilisearch", "qdrant", "milvus", "weaviate", "chromadb", "etcd", "zookeeper", "consul", "mq", "nacos"].includes(dbType || "");
 });
 
+const canOpenScheduledBackups = computed(() => {
+  // Match the backup page/engine, which filter and key off the raw db_type
+  // (effectiveDatabaseTypeForConnection maps gbase/mysql-dialect jdbc to "mysql",
+  // which would show an entry the backup dialog then can't list).
+  return isTauriRuntime() && supportsScheduledDatabaseBackup(rawDatabaseType());
+});
+
 const canOpenDiagram = computed(() => {
   return !!activeNode.value.database && supportsSchemaDiagram(currentDatabaseType());
 });
@@ -4872,9 +4880,9 @@ function buildConnectionSidebarMenu(context: SidebarMenuFactoryContext): boolean
     }
     if (canExportAllDatabases.value) {
       items.push({ label: t("contextMenu.exportAllDatabases"), action: openAllDatabasesExport, icon: Upload });
-      if (isTauriRuntime()) {
-        items.push({ label: t("databaseBackup.title"), action: openScheduledBackups, icon: CalendarClock });
-      }
+    }
+    if (canOpenScheduledBackups.value) {
+      items.push({ label: t("databaseBackup.title"), action: openScheduledBackups, icon: CalendarClock });
     }
     if (canCreateDatabase.value) {
       items.push({

apps/desktop/src/components/sidebar/__tests__/SidebarTreeRuntimeHost.backupMenu.spec.ts

@@ -0,0 +1,11 @@
+import { readFileSync } from "node:fs";
+import { describe, expect, it } from "vitest";
+
+const source = readFileSync(new URL("../SidebarTreeRuntimeHost.vue", import.meta.url), "utf8");
+
+describe("SidebarTreeRuntimeHost database backup menu", () => {
+  it("uses the database backup support matrix independently from full-database export", () => {
+    expect(source).toMatch(/const canOpenScheduledBackups = computed\(\(\) => \{[\s\S]*supportsScheduledDatabaseBackup\(rawDatabaseType\(\)\)/);
+    expect(source).toMatch(/if \(canOpenScheduledBackups\.value\) \{[\s\S]*action: openScheduledBackups/);
+  });
+});

packages/app-tests/scheduledDatabaseBackup.test.ts

@@ -268,6 +268,7 @@ test("explicit backup databases fail when any configured target is missing", ()
 test("scheduled backups are limited to databases with consistent snapshot support", () => {
   assert.equal(supportsScheduledDatabaseBackup("postgres"), true);
   assert.equal(supportsScheduledDatabaseBackup("mysql"), true);
+  assert.equal(supportsScheduledDatabaseBackup("dameng"), false);
   assert.equal(supportsScheduledDatabaseBackup("sqlite"), false);
   assert.equal(supportsScheduledDatabaseBackup("sqlserver"), false);
 });