feat: add official Codex skill and harden task execution

Install and update artemis-use with task diagnostics and plugin guidance. Preserve cross-device file receipts, review canonical reports, guard stage transitions and reduce small history summaries. Improve exploration lifecycle, request recovery and browser live connections.

apps/showcase_ui/src/app/components/model-settings/model-settings.component.ts

@@ -1,7 +1,8 @@
 import { Component, OnInit, inject, signal, output } from '@angular/core';
 import { FormsModule } from '@angular/forms';
 import { HttpClient } from '@angular/common/http';
-import { finalize } from 'rxjs';
+import { finalize, timeout } from 'rxjs';
+import { UI_READ_TIMEOUT_MS } from '../../core/http-timeouts';
 import { SettingSliderComponent, REASONING_VALUES, REASONING_LABELS } from '../setting-slider/setting-slider.component';
 
 interface ModelSettings {
@@ -128,7 +129,7 @@ export class ModelSettingsComponent implements OnInit {
   message = signal(''); error = signal('');
 
   ngOnInit(): void {
-    this.http.get<ModelSettings>('/api/system/model-settings').pipe(finalize(() => this.loading.set(false))).subscribe({
+    this.http.get<ModelSettings>('/api/system/model-settings').pipe(timeout(UI_READ_TIMEOUT_MS), finalize(() => this.loading.set(false))).subscribe({
       next: config => this.apply(config),
       error: () => this.error.set('配置加载失败，请刷新页面重试。')
     });