feat(ai): add connection tree context

apps/desktop/src/lib/__tests__/ai/addToAiDatabaseContext.spec.ts

@@ -0,0 +1,15 @@
+import { readFileSync } from "node:fs";
+import { describe, expect, it } from "vitest";
+
+const appSource = readFileSync(new URL("../../../App.vue", import.meta.url), "utf8");
+
+describe("add to AI database context", () => {
+  it("accepts database tree nodes with an empty database identifier", () => {
+    const addToAiStart = appSource.indexOf("async function addToAi");
+    const addToAiEnd = appSource.indexOf("function openAiPanel", addToAiStart);
+    const addToAiSource = appSource.slice(addToAiStart, addToAiEnd);
+
+    expect(addToAiSource).toContain("else if (hasTreeNodeDatabaseContext(node))");
+    expect(addToAiSource).not.toContain("else if (node.database)");
+  });
+});

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

@@ -92,6 +92,15 @@ export function supportsQueryExecution(dbType?: DatabaseType): boolean {
   return supportsDatabaseFeature(dbType, "queryExecution");
 }
 
+/**
+ * The AI assistant currently builds its context from database/table metadata.
+ * Connection-only query targets (for example etcd and ZooKeeper) do not expose
+ * that hierarchy, so they must not be offered by sidebar "Add to AI" actions.
+ */
+export function supportsAiAssistantContext(dbType?: DatabaseType): boolean {
+  return supportsQueryExecution(dbType) && !usesConnectionOnlyQueryTarget(dbType);
+}
+
 export function supportsConnectionScopedQueryExecution(dbType?: DatabaseType): boolean {
   return supportsRegisteredConnectionScopedQueryExecution(dbType);
 }