refactor(ai_client): remove unused history management and bleed stats helpers

tests/test_gemini_cli_parity_regression.py

@@ -11,16 +11,3 @@ def test_send_invokes_adapter_send() -> None:
   ai_client.set_provider("gemini_cli", "gemini-2.0-flash")
   res = ai_client.send("context", "msg")
   assert res == "Hello from mock adapter"
-
-def test_get_history_bleed_stats() -> None:
- import src.ai_client as ai_client
- ai_client._gemini_cli_adapter = None
- with patch('src.gemini_cli_adapter.subprocess.Popen') as mock_popen:
-  mock_process = MagicMock()
-  mock_process.communicate.return_value = ('{"type": "message", "content": "txt"}', '')
-  mock_process.returncode = 0
-  mock_popen.return_value = mock_process
-  ai_client.set_provider("gemini_cli", "gemini-2.0-flash")
-  ai_client.send("context", "msg")
-  stats = ai_client.get_history_bleed_stats()
-  assert stats["provider"] == "gemini_cli"

tests/test_history_management.py

@@ -112,22 +112,4 @@ def test_history_persistence_across_turns(tmp_path: Path) -> None:
  reloaded = project_manager.load_project(str(project_path))
  active_disc = reloaded["discussion"]["active"]
  h2 = reloaded["discussion"]["discussions"][active_disc]["history"]
- assert len(h2) >= 2
-
-def test_get_history_bleed_stats_basic() -> None:
- """Tests basic retrieval of history bleed statistics from the AI client."""
- ai_client.set_provider("gemini", "gemini-2.5-flash-lite")
- # Before any message, it might be 0 or based on an empty context
- stats = ai_client.get_history_bleed_stats()
- assert "provider" in stats
- assert stats["provider"] == "gemini"
- assert "current" in stats
- assert "limit" in stats, "Stats dictionary should contain 'limit'"
- 
- # Test with a different limit
- ai_client.set_model_params(0.0, 8192, 500)
- stats = ai_client.get_history_bleed_stats()
- assert "current" in stats, "Stats dictionary should contain 'current' token usage"
- assert 'limit' in stats, "Stats dictionary should contain 'limit'"
- assert stats['limit'] == 500
- assert isinstance(stats['current'], int) and stats['current'] >= 0
+ assert len(h2) >= 2

tests/test_minimax_provider.py

@@ -18,13 +18,6 @@ def test_minimax_list_models() -> None:
  assert "MiniMax-M2.1" in models
  assert "MiniMax-M2" in models
 
-def test_minimax_history_bleed_stats() -> None:
- ai_client.set_provider("minimax", "MiniMax-M2.5")
- ai_client.reset_session()
- stats = ai_client.get_history_bleed_stats(md_content="Test context")
- assert stats["provider"] == "minimax"
- assert stats["limit"] == 204800
-
 def test_minimax_in_providers_list() -> None:
  from src.models import PROVIDERS
  assert "minimax" in PROVIDERS

tests/test_token_viz.py

@@ -47,13 +47,6 @@ def test_add_bleed_derived_headroom_clamped_to_zero() -> None:
  result = ai_client._add_bleed_derived(d)
  assert result["headroom"] == 0
 
-def test_get_history_bleed_stats_returns_all_keys_unknown_provider() -> None:
- """get_history_bleed_stats must return a valid dict even if provider is unknown."""
- ai_client.set_provider("unknown", "unknown")
- stats = ai_client.get_history_bleed_stats()
- for key in ["provider", "limit", "current", "percentage", "estimated_prompt_tokens", "headroom", "would_trim", "sys_tokens", "tool_tokens", "history_tokens"]:
-  assert key in stats
-
 def test_app_token_stats_initialized_empty(app_instance: Any) -> None:
  """App._token_stats should start empty."""
  assert app_instance.controller._token_stats == {}