fix(compressor): ABC compliance — total_tokens, api_mode, logger consistency

tests/agent/test_last_total_tokens.py

@@ -0,0 +1,22 @@
+"""Test that last_total_tokens is correctly set by ContextCompressor."""
+
+from agent.context_compressor import ContextCompressor
+
+
+def test_update_from_response_sets_total_tokens():
+    """ABC contract: last_total_tokens must be set from API response."""
+    c = ContextCompressor(model="test", quiet_mode=True, config_context_length=200000)
+
+    c.update_from_response({"prompt_tokens": 100, "completion_tokens": 30, "total_tokens": 130})
+    assert c.last_total_tokens == 130
+
+    c.update_from_response({"prompt_tokens": 100, "completion_tokens": 30})
+    assert c.last_total_tokens == 130
+
+
+def test_session_reset_clears_total_tokens():
+    """on_session_reset must zero total_tokens."""
+    c = ContextCompressor(model="test", quiet_mode=True, config_context_length=200000)
+    c.update_from_response({"prompt_tokens": 100, "completion_tokens": 30, "total_tokens": 130})
+    c.on_session_reset()
+    assert c.last_total_tokens == 0

tests/run_agent/test_plugin_context_engine_init.py

@@ -87,5 +87,4 @@ def test_plugin_engine_update_model_args():
     assert kw["context_length"] == 131_072
     assert "model" in kw
     assert "provider" in kw
-    # Should NOT pass api_mode — the ABC doesn't accept it
-    assert "api_mode" not in kw
+    assert "api_mode" in kw