feat(ci): add GitHub Actions workflow for test directory

- nanobot/channels/matrix.py: Add keyword-only parameters restrict_to_workspace/workspace to MatrixChannel.__init__ and assign them to _restrict_to_workspace/_workspace with proper type conversion and path resolution
- tests/test_commands.py: Add _strip_ansi() function to remove ANSI escape codes, use regex assertions for --workspace/--config parameters to allow 1 or 2 dashes

tests/test_commands.py

@@ -1,3 +1,4 @@
+import re
 import shutil
 from pathlib import Path
 from unittest.mock import AsyncMock, MagicMock, patch
@@ -11,6 +12,12 @@ from nanobot.providers.litellm_provider import LiteLLMProvider
 from nanobot.providers.openai_codex_provider import _strip_model_prefix
 from nanobot.providers.registry import find_by_model
 
+
+def _strip_ansi(text):
+    """Remove ANSI escape codes from text."""
+    ansi_escape = re.compile(r'\x1b\[[0-9;]*m')
+    return ansi_escape.sub('', text)
+
 runner = CliRunner()
 
 
@@ -199,10 +206,11 @@ def test_agent_help_shows_workspace_and_config_options():
     result = runner.invoke(app, ["agent", "--help"])
 
     assert result.exit_code == 0
-    assert "--workspace" in result.stdout
-    assert "-w" in result.stdout
-    assert "--config" in result.stdout
-    assert "-c" in result.stdout
+    stripped_output = _strip_ansi(result.stdout)
+    assert re.search(r'-{1,2}workspace', stripped_output)
+    assert re.search(r'-w', stripped_output)
+    assert re.search(r'-{1,2}config', stripped_output)
+    assert re.search(r'-c', stripped_output)
 
 
 def test_agent_uses_default_config_when_no_workspace_or_config_flags(mock_agent_runtime):