fix: polish reply threading + tool dedupe (thanks @mneves75) (#326)

src/auto-reply/reply/reply-threading.test.ts

@@ -0,0 +1,53 @@
+import { describe, expect, it } from "vitest";
+
+import type { ClawdbotConfig } from "../../config/config.js";
+import {
+  createReplyToModeFilter,
+  resolveReplyToMode,
+} from "./reply-threading.js";
+
+const emptyCfg = {} as ClawdbotConfig;
+
+describe("resolveReplyToMode", () => {
+  it("defaults to first for Telegram", () => {
+    expect(resolveReplyToMode(emptyCfg, "telegram")).toBe("first");
+  });
+
+  it("defaults to off for Discord and Slack", () => {
+    expect(resolveReplyToMode(emptyCfg, "discord")).toBe("off");
+    expect(resolveReplyToMode(emptyCfg, "slack")).toBe("off");
+  });
+
+  it("defaults to all when channel is unknown", () => {
+    expect(resolveReplyToMode(emptyCfg, undefined)).toBe("all");
+  });
+
+  it("uses configured value when present", () => {
+    const cfg = {
+      telegram: { replyToMode: "all" },
+      discord: { replyToMode: "first" },
+      slack: { replyToMode: "all" },
+    } as ClawdbotConfig;
+    expect(resolveReplyToMode(cfg, "telegram")).toBe("all");
+    expect(resolveReplyToMode(cfg, "discord")).toBe("first");
+    expect(resolveReplyToMode(cfg, "slack")).toBe("all");
+  });
+});
+
+describe("createReplyToModeFilter", () => {
+  it("drops replyToId when mode is off", () => {
+    const filter = createReplyToModeFilter("off");
+    expect(filter({ text: "hi", replyToId: "1" }).replyToId).toBeUndefined();
+  });
+
+  it("keeps replyToId when mode is all", () => {
+    const filter = createReplyToModeFilter("all");
+    expect(filter({ text: "hi", replyToId: "1" }).replyToId).toBe("1");
+  });
+
+  it("keeps only the first replyToId when mode is first", () => {
+    const filter = createReplyToModeFilter("first");
+    expect(filter({ text: "hi", replyToId: "1" }).replyToId).toBe("1");
+    expect(filter({ text: "next", replyToId: "1" }).replyToId).toBeUndefined();
+  });
+});