feat (memory): Implement new (opt-in) QMD memory backend

src/memory/backend-config.test.ts

@@ -0,0 +1,58 @@
+import path from "node:path";
+
+import { describe, expect, it } from "vitest";
+
+import type { MoltbotConfig } from "../config/config.js";
+import { resolveAgentWorkspaceDir } from "../agents/agent-scope.js";
+import { resolveMemoryBackendConfig } from "./backend-config.js";
+
+describe("resolveMemoryBackendConfig", () => {
+  it("defaults to builtin backend when config missing", () => {
+    const cfg = { agents: { defaults: { workspace: "/tmp/memory-test" } } } as MoltbotConfig;
+    const resolved = resolveMemoryBackendConfig({ cfg, agentId: "main" });
+    expect(resolved.backend).toBe("builtin");
+    expect(resolved.citations).toBe("auto");
+    expect(resolved.qmd).toBeUndefined();
+  });
+
+  it("resolves qmd backend with default collections", () => {
+    const cfg = {
+      agents: { defaults: { workspace: "/tmp/memory-test" } },
+      memory: {
+        backend: "qmd",
+        qmd: {},
+      },
+    } as MoltbotConfig;
+    const resolved = resolveMemoryBackendConfig({ cfg, agentId: "main" });
+    expect(resolved.backend).toBe("qmd");
+    expect(resolved.qmd?.collections.length).toBeGreaterThanOrEqual(3);
+    expect(resolved.qmd?.command).toBe("qmd");
+    expect(resolved.qmd?.update.intervalMs).toBeGreaterThan(0);
+  });
+
+  it("resolves custom paths relative to workspace", () => {
+    const cfg = {
+      agents: {
+        defaults: { workspace: "/workspace/root" },
+        list: [{ id: "main", workspace: "/workspace/root" }],
+      },
+      memory: {
+        backend: "qmd",
+        qmd: {
+          paths: [
+            {
+              path: "notes",
+              name: "custom-notes",
+              pattern: "**/*.md",
+            },
+          ],
+        },
+      },
+    } as MoltbotConfig;
+    const resolved = resolveMemoryBackendConfig({ cfg, agentId: "main" });
+    const custom = resolved.qmd?.collections.find((c) => c.name.startsWith("custom-notes"));
+    expect(custom).toBeDefined();
+    const workspaceRoot = resolveAgentWorkspaceDir(cfg, "main");
+    expect(custom?.path).toBe(path.resolve(workspaceRoot, "notes"));
+  });
+});