feat(memory): harden legacy history migration and Dream UX

tests/channels/test_telegram_channel.py

@@ -185,6 +185,9 @@ async def test_start_creates_separate_pools_with_proxy(monkeypatch) -> None:
     assert builder.request_value is api_req
     assert builder.get_updates_request_value is poll_req
     assert any(cmd.command == "status" for cmd in app.bot.commands)
+    assert any(cmd.command == "dream" for cmd in app.bot.commands)
+    assert any(cmd.command == "dream-log" for cmd in app.bot.commands)
+    assert any(cmd.command == "dream-restore" for cmd in app.bot.commands)
 
 
 @pytest.mark.asyncio
@@ -962,6 +965,27 @@ async def test_forward_command_does_not_inject_reply_context() -> None:
     assert handled[0]["content"] == "/new"
 
 
+@pytest.mark.asyncio
+async def test_forward_command_preserves_dream_log_args_and_strips_bot_suffix() -> None:
+    channel = TelegramChannel(
+        TelegramConfig(enabled=True, token="123:abc", allow_from=["*"], group_policy="open"),
+        MessageBus(),
+    )
+    channel._app = _FakeApp(lambda: None)
+    handled = []
+
+    async def capture_handle(**kwargs) -> None:
+        handled.append(kwargs)
+
+    channel._handle_message = capture_handle
+    update = _make_telegram_update(text="/dream-log@nanobot_test deadbeef", reply_to_message=None)
+
+    await channel._forward_command(update, None)
+
+    assert len(handled) == 1
+    assert handled[0]["content"] == "/dream-log deadbeef"
+
+
 @pytest.mark.asyncio
 async def test_on_help_includes_restart_command() -> None:
     channel = TelegramChannel(
@@ -977,3 +1001,6 @@ async def test_on_help_includes_restart_command() -> None:
     help_text = update.message.reply_text.await_args.args[0]
     assert "/restart" in help_text
     assert "/status" in help_text
+    assert "/dream" in help_text
+    assert "/dream-log" in help_text
+    assert "/dream-restore" in help_text