fix: unify inbound sender labels

src/telegram/bot-message-context.sender-prefix.test.ts

@@ -0,0 +1,52 @@
+import { describe, expect, it, vi } from "vitest";
+
+import { buildTelegramMessageContext } from "./bot-message-context.js";
+
+describe("buildTelegramMessageContext sender prefix", () => {
+  it("prefixes group bodies with sender label", async () => {
+    const ctx = await buildTelegramMessageContext({
+      primaryCtx: {
+        message: {
+          message_id: 1,
+          chat: { id: -99, type: "supergroup", title: "Dev Chat" },
+          date: 1700000000,
+          text: "hello",
+          from: { id: 42, first_name: "Alice" },
+        },
+        me: { id: 7, username: "bot" },
+      } as never,
+      allMedia: [],
+      storeAllowFrom: [],
+      options: {},
+      bot: {
+        api: {
+          sendChatAction: vi.fn(),
+          setMessageReaction: vi.fn(),
+        },
+      } as never,
+      cfg: {
+        agents: { defaults: { model: "anthropic/claude-opus-4-5", workspace: "/tmp/clawd" } },
+        channels: { telegram: {} },
+        messages: { groupChat: { mentionPatterns: [] } },
+      } as never,
+      account: { accountId: "default" } as never,
+      historyLimit: 0,
+      groupHistories: new Map(),
+      dmPolicy: "open",
+      allowFrom: [],
+      groupAllowFrom: [],
+      ackReactionScope: "off",
+      logger: { info: vi.fn() },
+      resolveGroupActivation: () => undefined,
+      resolveGroupRequireMention: () => false,
+      resolveTelegramGroupConfig: () => ({
+        groupConfig: { requireMention: false },
+        topicConfig: undefined,
+      }),
+    });
+
+    expect(ctx).not.toBeNull();
+    const body = ctx?.ctxPayload?.Body ?? "";
+    expect(body).toContain("Alice (42): hello");
+  });
+});