feat: multi-gateway profile support, provider management overhaul, and model settings tab

- Profile-aware proxy: inject API key from profile-specific .env, route requests via X-Hermes-Profile header
- Remove auth.json dependency: built-in providers use .env, custom providers use config.yaml
- Add allProviders field to available-models response with all hardcoded provider catalogs
- Add Models tab in Settings for editing provider API keys (built-in → .env, custom → config.yaml)
- Add PUT /api/config/providers/:poolKey for updating provider credentials
- ProviderFormModal uses backend allProviders for preset dropdown
- Gateway log format support: parse both agent and gateway log formats
- Add webui server.log to log viewer with log rotation at 3MB
- Fix provider delete loading state and OAuth provider cleanup
- Setup script: require Node.js 23+, auto-upgrade if version too low

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/client/src/views/hermes/SettingsView.vue

@@ -12,6 +12,7 @@ import AgentSettings from "@/components/hermes/settings/AgentSettings.vue";
 import MemorySettings from "@/components/hermes/settings/MemorySettings.vue";
 import SessionSettings from "@/components/hermes/settings/SessionSettings.vue";
 import PrivacySettings from "@/components/hermes/settings/PrivacySettings.vue";
+import ModelSettings from "@/components/hermes/settings/ModelSettings.vue";
 
 const settingsStore = useSettingsStore();
 const { t } = useI18n();
@@ -49,6 +50,9 @@ onMounted(() => {
           <NTabPane name="privacy" :tab="t('settings.tabs.privacy')">
             <PrivacySettings />
           </NTabPane>
+          <NTabPane name="models" :tab="t('settings.tabs.models')">
+            <ModelSettings />
+          </NTabPane>
         </NTabs>
       </NSpin>
     </div>