feat(docs): export data dictionary as PDF

apps/desktop/src/lib/database/__tests__/dataDictionarySupport.spec.ts

@@ -0,0 +1,17 @@
+import { describe, expect, it } from "vitest";
+import { supportsDataDictionary, supportsSchemaDiagram } from "@/lib/database/databaseFeatureSupport";
+
+describe("supportsDataDictionary", () => {
+  it("is available for relational engines, including ones without a diagram", () => {
+    expect(supportsDataDictionary("mysql")).toBe(true);
+    expect(supportsDataDictionary("oracle")).toBe(true);
+    expect(supportsDataDictionary("postgres")).toBe(true);
+    expect(supportsDataDictionary("doris")).toBe(true);
+    expect(supportsSchemaDiagram("doris")).toBe(false);
+  });
+
+  it("is hidden for engines that cannot list table metadata", () => {
+    expect(supportsDataDictionary("redis")).toBe(false);
+    expect(supportsDataDictionary("plugin")).toBe(false);
+  });
+});

apps/desktop/src/lib/database/databaseFeatureSupport.ts

@@ -198,6 +198,11 @@ export function supportsSchemaDiagram(dbType?: DatabaseType): boolean {
   return supportsDatabaseFeature(dbType, "diagram");
 }
 
+/** Relational engines that can list tables and columns. Independent of diagram support. */
+export function supportsDataDictionary(dbType?: DatabaseType): boolean {
+  return supportsDatabaseFeature(dbType, "metadataBrowse");
+}
+
 export function supportsDatabaseSearch(dbType?: DatabaseType): boolean {
   return supportsDatabaseFeature(dbType, "schemaSearch");
 }