core/cli: /history last and --full with Rich markdown

tests/test_cli/test_repl_commands.py

@@ -109,9 +109,11 @@ async def test_help_command_usage_line(state: ReplState, capsys: pytest.CaptureF
 async def test_help_history_no_fake_options(state: ReplState, capsys: pytest.CaptureFixture[str]) -> None:
     assert await handle_slash(state, "/help history") is True
     out = capsys.readouterr().out
-    assert "Usage: /history [N]" in out
-    assert "Options:" not in out
-    assert "--help" not in out
+    assert "Usage: /history" in out
+    # Real flags for full/preview are documented; Click's meta --help is not.
+    assert "--full" in out
+    assert "--preview" in out
+    assert "  --help" not in out
 
 
 async def test_help_stream_clearer(state: ReplState, capsys: pytest.CaptureFixture[str]) -> None:
@@ -444,10 +446,61 @@ async def test_history(state: ReplState, capsys: pytest.CaptureFixture[str]) ->
     ]
     assert await handle_slash(state, "/history") is True
     out = capsys.readouterr().out
+    assert "mode=preview" in out
     assert "user: hello" in out
     assert "assistant: hi there" in out
 
 
+async def test_history_last_full(state: ReplState, capsys: pytest.CaptureFixture[str]) -> None:
+    from plyngent.lmproto.openai_compatible.model import AssistantChatMessage, UserChatMessage
+
+    long_body = "# Title\n\n" + ("paragraph text. " * 20)
+    state.agent.messages = [
+        UserChatMessage(content="hello"),
+        AssistantChatMessage(content=long_body),
+    ]
+    assert await handle_slash(state, "/history last") is True
+    out = capsys.readouterr().out
+    assert "mode=full" in out
+    assert "assistant:" in out
+    # Full mode should not use the 200-char preview ellipsis on the body alone
+    assert long_body[:50] in out or "Title" in out
+
+
+async def test_history_one_full(state: ReplState, capsys: pytest.CaptureFixture[str]) -> None:
+    from plyngent.lmproto.openai_compatible.model import UserChatMessage
+
+    state.agent.messages = [UserChatMessage(content="only me")]
+    assert await handle_slash(state, "/history 1") is True
+    out = capsys.readouterr().out
+    assert "mode=full" in out
+    assert "only me" in out
+
+
+async def test_history_one_preview_flag(state: ReplState, capsys: pytest.CaptureFixture[str]) -> None:
+    from plyngent.lmproto.openai_compatible.model import UserChatMessage
+
+    state.agent.messages = [UserChatMessage(content="x" * 250)]
+    assert await handle_slash(state, "/history 1 --preview") is True
+    out = capsys.readouterr().out
+    assert "mode=preview" in out
+    assert "…" in out
+
+
+async def test_history_full_flag(state: ReplState, capsys: pytest.CaptureFixture[str]) -> None:
+    from plyngent.lmproto.openai_compatible.model import AssistantChatMessage, UserChatMessage
+
+    body = "full " * 100
+    state.agent.messages = [
+        UserChatMessage(content="u"),
+        AssistantChatMessage(content=body),
+    ]
+    assert await handle_slash(state, "/history 2 --full") is True
+    out = capsys.readouterr().out
+    assert "mode=full" in out
+    assert body[:40] in out
+
+
 async def test_rounds(state: ReplState) -> None:
     assert await handle_slash(state, "/rounds 40") is True
     assert state.max_rounds == 40