refactor: rename resolve_herdr_workspace to resolve_herdr_session and use herdr_session database field consistently

tests/test_challenger_m2.py

@@ -124,7 +124,7 @@ d['herdr_sessions'] = [{{
     'name': '{session_name}',
     'status': 'running',
     'role': 'Creator',
-    'herdr_workspace': 'my-custom-workspace',
+    'herdr_session': 'my-custom-workspace',
     'pane': {{
         'cwd': 'WS_PLACEHOLDER',
         'pid': 7777,

tests/test_tier1_unit.py

@@ -104,15 +104,15 @@ def test_create_validate_env_key(mam_sandbox):
 # FEATURE 2: Resume Session (6 Test Cases)
 # ==============================================================================
 
-def test_resume_resolve_herdr_workspace_default(mam_sandbox):
-    """Test resolve_herdr_workspace fallback behavior when session is not in YAML."""
-    res = run_lib_func(mam_sandbox, "resolve_herdr_workspace", "non-existent-session")
+def test_resume_resolve_herdr_session_default(mam_sandbox):
+    """Test resolve_herdr_session fallback behavior when session is not in YAML."""
+    res = run_lib_func(mam_sandbox, "resolve_herdr_session", "non-existent-session")
     assert res.returncode == 0
     assert res.stdout.strip() == "default"
 
-def test_resume_resolve_herdr_workspace_env(mam_sandbox):
-    """Test resolve_herdr_workspace fallback to HERDR_SERVER_NAME env var."""
-    res = run_lib_func(mam_sandbox, "resolve_herdr_workspace", "non-existent-session", env={"HERDR_SERVER_NAME": "custom_server"})
+def test_resume_resolve_herdr_session_env(mam_sandbox):
+    """Test resolve_herdr_session fallback to HERDR_SERVER_NAME env var."""
+    res = run_lib_func(mam_sandbox, "resolve_herdr_session", "non-existent-session", env={"HERDR_SERVER_NAME": "custom_server"})
     assert res.returncode == 0
     assert res.stdout.strip() == "custom_server"
 

tests/test_tier3_integration.py

@@ -63,7 +63,7 @@ def test_integration_create_options_combination(mam_sandbox, mock_herdr, mock_ag
     session = sessions[0]
     
     assert session["role"] == "Creator"
-    assert session["herdr_server"] == "custom_server"
+    assert session.get("herdr_session") == "custom_server"
     assert session["delegate_job_id"] is not None
     assert session["status"] == "running"