test(sessions): add delivery info regression coverage

src/config/sessions/delivery-info.test.ts

@@ -0,0 +1,94 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import type { SessionEntry } from "./types.js";
+
+const storeState = vi.hoisted(() => ({
+  store: {} as Record<string, SessionEntry>,
+}));
+
+vi.mock("../io.js", () => ({
+  loadConfig: () => ({}),
+}));
+
+vi.mock("./paths.js", () => ({
+  resolveStorePath: () => "/tmp/sessions.json",
+}));
+
+vi.mock("./store.js", () => ({
+  loadSessionStore: () => storeState.store,
+}));
+
+import { extractDeliveryInfo } from "./delivery-info.js";
+
+const buildEntry = (deliveryContext: SessionEntry["deliveryContext"]): SessionEntry => ({
+  sessionId: "session-1",
+  updatedAt: Date.now(),
+  deliveryContext,
+});
+
+beforeEach(() => {
+  storeState.store = {};
+});
+
+describe("extractDeliveryInfo", () => {
+  it("returns deliveryContext for direct session keys", () => {
+    const sessionKey = "agent:main:webchat:dm:user-123";
+    storeState.store[sessionKey] = buildEntry({
+      channel: "webchat",
+      to: "webchat:user-123",
+      accountId: "default",
+    });
+
+    const result = extractDeliveryInfo(sessionKey);
+
+    expect(result).toEqual({
+      deliveryContext: {
+        channel: "webchat",
+        to: "webchat:user-123",
+        accountId: "default",
+      },
+      threadId: undefined,
+    });
+  });
+
+  it("falls back to base sessions for :thread: keys", () => {
+    const baseKey = "agent:main:slack:channel:C0123ABC";
+    const threadKey = `${baseKey}:thread:1234567890.123456`;
+    storeState.store[baseKey] = buildEntry({
+      channel: "slack",
+      to: "slack:C0123ABC",
+      accountId: "workspace-1",
+    });
+
+    const result = extractDeliveryInfo(threadKey);
+
+    expect(result).toEqual({
+      deliveryContext: {
+        channel: "slack",
+        to: "slack:C0123ABC",
+        accountId: "workspace-1",
+      },
+      threadId: "1234567890.123456",
+    });
+  });
+
+  it("falls back to base sessions for :topic: keys", () => {
+    const baseKey = "agent:main:telegram:group:98765";
+    const topicKey = `${baseKey}:topic:55`;
+    storeState.store[baseKey] = buildEntry({
+      channel: "telegram",
+      to: "group:98765",
+      accountId: "main",
+    });
+
+    const result = extractDeliveryInfo(topicKey);
+
+    expect(result).toEqual({
+      deliveryContext: {
+        channel: "telegram",
+        to: "group:98765",
+        accountId: "main",
+      },
+      threadId: "55",
+    });
+  });
+});