fix: load_cli_config() now carries over non-default config keys

load_cli_config() only merged keys present in its hardcoded defaults
dict, silently dropping user-added keys like platform_toolsets (saved
by 'hermes tools'), provider_routing, memory, honcho, etc.

Added a second pass to carry over all file_config keys that aren't in
defaults, so 'hermes tools' changes actually take effect in CLI mode.

The gateway was unaffected (reads YAML directly via yaml.safe_load).

cli.py

@@ -229,7 +229,8 @@ def load_cli_config() -> Dict[str, Any]:
                     # Old format: model is a dict with default/base_url
                     defaults["model"].update(file_config["model"])
             
-            # Deep merge other keys with defaults
+            # Deep merge file_config into defaults.
+            # First: merge keys that exist in both (deep-merge dicts, overwrite scalars)
             for key in defaults:
                 if key == "model":
                     continue  # Already handled above
@@ -239,6 +240,12 @@ def load_cli_config() -> Dict[str, Any]:
                     else:
                         defaults[key] = file_config[key]
             
+            # Second: carry over keys from file_config that aren't in defaults
+            # (e.g. platform_toolsets, provider_routing, memory, honcho, etc.)
+            for key in file_config:
+                if key not in defaults and key != "model":
+                    defaults[key] = file_config[key]
+            
             # Handle root-level max_turns (backwards compat) - copy to agent.max_turns
             if "max_turns" in file_config and "agent" not in file_config:
                 defaults["agent"]["max_turns"] = file_config["max_turns"]