feat(bot): /start without a code on the demo stand opens a private copy of veteran Andrey

Refs #108

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_telegram.py

@@ -22,6 +22,7 @@ from app.channels.telegram import (
     render_markup,
     split_text,
 )
+from app.config import get_settings
 from app.db import identity_repo, session
 from app.db.bootstrap import init_db
 from app.dialog.contracts import Button, Event, Reply
@@ -163,7 +164,10 @@ async def test_verified_token_without_identity_record(dbs: None, engine: Recordi
     assert sender.texts == [load_texts().code_invalid]
 
 
-async def test_unbound_chat_gets_not_connected(dbs: None, engine: RecordingEngine) -> None:
+async def test_unbound_chat_gets_not_connected(
+    dbs: None, engine: RecordingEngine, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    monkeypatch.setattr(get_settings(), "demo_clock", False)
     sender = FakeSender()
     channel = TelegramChannel(sender)
     await channel.on_start(CHAT, None)
@@ -251,6 +255,18 @@ async def test_outbox_pushes_to_bound_chat_and_falls_back(dbs: None, engine: Rec
     assert [r.text for r in fallback.drain(TOKEN2)] == ["Как вы сегодня?"]
 
 
+async def test_start_without_code_on_demo_stand_binds_a_demo_copy(
+    dbs: None, engine: RecordingEngine, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    monkeypatch.setattr(get_settings(), "demo_clock", True)
+    sender = FakeSender()
+    channel = TelegramChannel(sender)
+    await channel.on_start(CHAT, None)
+    token = await channel.directory.token_for(CHAT)
+    assert token is not None and token.startswith("tok-andrey-")
+    assert [c[1].type for c in engine.calls] == ["start"]
+
+
 async def test_start_is_noop_without_token(monkeypatch: pytest.MonkeyPatch) -> None:
     monkeypatch.setattr(telegram, "get_settings", lambda: type("S", (), {"tg_bot_token": ""})())
     before = integrations.outbox