refactor(pairing): centralize reply formatting

src/pairing/pairing-messages.test.ts

@@ -0,0 +1,44 @@
+import { describe, expect, it } from "vitest";
+
+import { buildPairingReply } from "./pairing-messages.js";
+
+describe("buildPairingReply", () => {
+  const cases = [
+    {
+      provider: "discord",
+      idLine: "Your Discord user id: 1",
+      code: "ABC123",
+    },
+    {
+      provider: "slack",
+      idLine: "Your Slack user id: U1",
+      code: "DEF456",
+    },
+    {
+      provider: "signal",
+      idLine: "Your Signal number: +15550001111",
+      code: "GHI789",
+    },
+    {
+      provider: "imessage",
+      idLine: "Your iMessage sender id: +15550002222",
+      code: "JKL012",
+    },
+    {
+      provider: "whatsapp",
+      idLine: "Your WhatsApp sender id: +15550003333",
+      code: "MNO345",
+    },
+  ] as const;
+
+  for (const testCase of cases) {
+    it(`formats pairing reply for ${testCase.provider}`, () => {
+      const text = buildPairingReply(testCase);
+      expect(text).toContain(testCase.idLine);
+      expect(text).toContain(`Pairing code: ${testCase.code}`);
+      expect(text).toContain(
+        `clawdbot pairing approve --provider ${testCase.provider} <code>`,
+      );
+    });
+  }
+});