fix(gateway): load display config from routed profile

gateway/run.py

@@ -1260,7 +1260,7 @@ _ensure_ssl_certs()
 sys.path.insert(0, str(Path(__file__).parent.parent))
 
 # Resolve Hermes home directory (respects HERMES_HOME override)
-from hermes_constants import get_hermes_home
+from hermes_constants import get_hermes_home, get_hermes_home_override
 from utils import atomic_json_write, atomic_yaml_write, base_url_host_matches, is_truthy_value
 _hermes_home = get_hermes_home()
 
@@ -2249,6 +2249,14 @@ def _teams_pipeline_plugin_enabled() -> bool:
     return "teams_pipeline" in enabled or "teams-pipeline" in enabled
 
 
+def _gateway_config_home() -> Path:
+    """Return the Hermes home that gateway config reads should use."""
+    override = get_hermes_home_override()
+    if override:
+        return Path(override)
+    return _hermes_home
+
+
 def _load_gateway_config() -> dict:
     """Load and parse ~/.hermes/config.yaml, returning {} on any error.
 
@@ -2260,7 +2268,8 @@ def _load_gateway_config() -> dict:
     gateway honors administrator-pinned values — neither read_raw_config nor a
     direct yaml.safe_load carries the managed merge on its own. Fail-open.
     """
-    config_path = _hermes_home / 'config.yaml'
+    config_home = _gateway_config_home()
+    config_path = config_home / 'config.yaml'
     raw: dict = {}
     used_canonical = False
     try:

tests/gateway/test_multiplex_phase0.py

@@ -10,7 +10,9 @@ Covers the three Phase 0 deliverables:
 """
 import pytest
 from unittest.mock import patch
+import yaml
 
+from hermes_constants import reset_hermes_home_override, set_hermes_home_override
 from gateway.config import GatewayConfig, Platform
 from gateway.session import SessionSource, SessionStore, build_session_key
 
@@ -127,6 +129,43 @@ class TestMultiplexConfigFlag:
         cfg = GatewayConfig.from_dict(GatewayConfig(multiplex_profiles=True).to_dict())
         assert cfg.multiplex_profiles is True
 
+    def test_gateway_config_loader_honors_profile_runtime_scope(self, tmp_path, monkeypatch):
+        """Multiplexed turns must resolve display settings from the routed profile."""
+        import gateway.run as gateway_run
+
+        root_home = tmp_path / "root"
+        profile_home = tmp_path / "profiles" / "quiet"
+        root_home.mkdir(parents=True)
+        profile_home.mkdir(parents=True)
+
+        (root_home / "config.yaml").write_text(
+            yaml.safe_dump(
+                {"display": {"tool_progress": "all", "interim_assistant_messages": True}},
+                sort_keys=False,
+            ),
+            encoding="utf-8",
+        )
+        (profile_home / "config.yaml").write_text(
+            yaml.safe_dump(
+                {"display": {"tool_progress": False, "interim_assistant_messages": False}},
+                sort_keys=False,
+            ),
+            encoding="utf-8",
+        )
+
+        monkeypatch.setattr(gateway_run, "_hermes_home", root_home)
+
+        assert gateway_run._load_gateway_config()["display"]["tool_progress"] == "all"
+
+        token = set_hermes_home_override(profile_home)
+        try:
+            scoped_config = gateway_run._load_gateway_config()
+        finally:
+            reset_hermes_home_override(token)
+
+        assert scoped_config["display"]["tool_progress"] is False
+        assert scoped_config["display"]["interim_assistant_messages"] is False
+
 
 class TestSessionStoreProfileResolution:
     """SessionStore._generate_session_key honors the flag: legacy namespace
@@ -162,4 +201,3 @@ class TestSessionStoreProfileResolution:
         with patch("hermes_cli.profiles.get_active_profile_name", return_value="default"):
             assert store._generate_session_key(s) == "agent:main:telegram:dm:99"
 
-