fix(cleanup): remove empty isolation stubs and dead symbols (P2-2 / C-3a / C-4)

tests/test_tier1_unit.py

@@ -28,7 +28,7 @@ def get_mqtt_common(mam_sandbox):
 
 
 # ==============================================================================
-# FEATURE 1: Create Session (7 Test Cases)
+# FEATURE 1: Create Session (5 Test Cases)
 # ==============================================================================
 
 def test_create_derive_session_name_standard(mam_sandbox):
@@ -49,43 +49,14 @@ def test_create_derive_session_name_weird_characters(mam_sandbox):
     assert res.returncode == 0
     assert res.stdout.strip() == "bc-d-ef-creator-hermes"
 
-def test_create_isolation_lever(mam_sandbox):
-    """Test isolation_lever outputs for each supported agent."""
-    agents = {
-        "claude": "none",
-        "cline": "none",
-        "agy": "none",
-        "hermes": "none",
-        "unknown": ""
-    }
-    for agent, expected in agents.items():
-        res = run_lib_func(mam_sandbox, "isolation_lever", agent)
-        assert res.returncode == 0
-        assert res.stdout.strip() == expected
-
-def test_create_isolation_env_prefix(mam_sandbox):
-    """Test isolation_env_prefix format outputs."""
-    res = run_lib_func(mam_sandbox, "isolation_env_prefix", "claude", "/tmp/iso")
-    assert res.returncode == 0
-    assert res.stdout == ""
-
-    res2 = run_lib_func(mam_sandbox, "isolation_env_prefix", "agy", "/tmp/iso")
-    assert res2.returncode == 0
-    assert res2.stdout == ""
-
-    res3 = run_lib_func(mam_sandbox, "isolation_env_prefix", "cline", "/tmp/iso")
-    assert res3.returncode == 0
-    assert res3.stdout == ""
-
-def test_create_isolation_cmd_args(mam_sandbox):
-    """Test isolation_cmd_args format outputs."""
-    res = run_lib_func(mam_sandbox, "isolation_cmd_args", "cline", "/tmp/iso")
-    assert res.returncode == 0
-    assert res.stdout == ""
-
-    res2 = run_lib_func(mam_sandbox, "isolation_cmd_args", "claude", "/tmp/iso")
-    assert res2.returncode == 0
-    assert res2.stdout == ""
+def test_create_session_legacy_isolate_flags_noop(mam_sandbox):
+    """Legacy --isolate/--no-isolate must stay a documented no-op, not an arg-parser error."""
+    create_script = mam_sandbox / "skills" / "multi-agent-mux-create" / "scripts" / "create_session.sh"
+    for flag in ["--isolate", "--no-isolate"]:
+        res = subprocess.run(["bash", str(create_script), flag, "-h"], capture_output=True, text=True)
+        assert res.returncode == 0, f"{flag} rejected by arg parser: {res.stderr}"
+        assert "NOTE: --isolate/--no-isolate is a no-op" in res.stderr
+        assert flag in res.stdout, f"{flag} missing from usage() help text"
 
 def test_create_validate_env_key(mam_sandbox):
     """Test _validate_env_key function with valid and blocked environment keys."""