fix: avoid silent telegram empty replies (#3796) (#3796)

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

@@ -1,5 +1,6 @@
 import { describe, expect, it } from "vitest";
 
+import { SILENT_REPLY_TOKEN } from "../tokens.js";
 import { normalizeReplyPayload } from "./normalize-reply.js";
 
 // Keep channelData-only payloads so channel-specific replies survive normalization.
@@ -19,4 +20,30 @@ describe("normalizeReplyPayload", () => {
     expect(normalized?.text).toBeUndefined();
     expect(normalized?.channelData).toEqual(payload.channelData);
   });
+
+  it("records silent skips", () => {
+    const reasons: string[] = [];
+    const normalized = normalizeReplyPayload(
+      { text: SILENT_REPLY_TOKEN },
+      {
+        onSkip: (reason) => reasons.push(reason),
+      },
+    );
+
+    expect(normalized).toBeNull();
+    expect(reasons).toEqual(["silent"]);
+  });
+
+  it("records empty skips", () => {
+    const reasons: string[] = [];
+    const normalized = normalizeReplyPayload(
+      { text: "   " },
+      {
+        onSkip: (reason) => reasons.push(reason),
+      },
+    );
+
+    expect(normalized).toBeNull();
+    expect(reasons).toEqual(["empty"]);
+  });
 });