fix(gateway): run adapter config hooks for nested-only platform blocks

The plugin apply_yaml_config_fn dispatch loop only ran when a top-level
platform block (e.g. `discord:`) existed. Configs that defined a platform
only under `platforms.<name>` or `gateway.platforms.<name>` skipped the
hook, so `platforms.discord.extra.allow_from` never reached
DISCORD_ALLOWED_USERS. Fall back to those nested blocks when the top-level
one is absent.

Also map byquenox@gmail.com -> Que0x for the salvaged commits.

gateway/config.py

@@ -916,6 +916,18 @@ def load_gateway_config() -> GatewayConfig:
                     if entry.apply_yaml_config_fn is None:
                         continue
                     platform_cfg = yaml_cfg.get(entry.name)
+                    # Fall back to the platform's block under ``platforms`` /
+                    # ``gateway.platforms`` so adapter hooks still run when the
+                    # user configured the platform only under those nested paths
+                    # (e.g. ``platforms.discord.extra.allow_from``) and not via a
+                    # top-level ``discord:`` block.
+                    if not isinstance(platform_cfg, dict):
+                        for _src in (gateway_platforms, yaml_cfg.get("platforms")):
+                            if isinstance(_src, dict):
+                                _candidate = _src.get(entry.name)
+                                if isinstance(_candidate, dict):
+                                    platform_cfg = _candidate
+                                    break
                     if not isinstance(platform_cfg, dict):
                         continue
                     try: