fix(plugins): await async handlers in CLI and TUI dispatch

tests/hermes_cli/test_plugins.py

@@ -21,6 +21,7 @@ from hermes_cli.plugins import (
     get_plugin_command_handler,
     get_plugin_commands,
     get_pre_tool_call_block_message,
+    resolve_plugin_command_result,
     discover_plugins,
     invoke_hook,
 )
@@ -1061,6 +1062,27 @@ class TestPluginCommands:
         assert mgr._plugin_commands["cmd-b"]["plugin"] == "plugin-b"
 
 
+class TestPluginCommandResultResolution:
+    def test_returns_sync_values_unchanged(self):
+        assert resolve_plugin_command_result("ok") == "ok"
+
+    def test_awaits_async_result_without_running_loop(self):
+        async def _handler():
+            return "async-ok"
+
+        assert resolve_plugin_command_result(_handler()) == "async-ok"
+
+    def test_awaits_async_result_with_running_loop(self, monkeypatch):
+        class _Loop:
+            pass
+
+        async def _handler():
+            return "threaded-ok"
+
+        monkeypatch.setattr("hermes_cli.plugins.asyncio.get_running_loop", lambda: _Loop())
+        assert resolve_plugin_command_result(_handler()) == "threaded-ok"
+
+
 # ── TestPluginDispatchTool ────────────────────────────────────────────────