feat: release 2.1.0 with optional Flash final AI review

Default Flash final review to off and persist the setting across the UI,
MCP, SDK and queued tasks. Keep execution separate from test verdicts.

Bundle UI fonts and licenses to remove Google Fonts from startup builds.
Align backend/frontend versions and document installation and upgrades.

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

@@ -12,6 +12,7 @@ interface Capabilities {
   video_enabled: boolean;
   recording_enabled: boolean;
   outputter_enabled: boolean;
+  flash_final_check_enabled: boolean;
   step_summarizer_enabled: boolean;
   screenshot_limit_enabled: boolean;
   screenshot_max_long_edge: number;
@@ -28,7 +29,7 @@ interface Capabilities {
   template: `
     <section aria-label="功能开关">
       <h3>功能开关</h3>
-      <p>按需启用，保存后对新任务生效。</p>
+      <p>按需启用，保存后对尚未开始的任务生效，不影响运行中的任务。</p>
       <label><input type="checkbox" role="switch" [(ngModel)]="config.adb_auto_connect" [disabled]="busy() || loading() || !loaded()" />
         <span>自动连接设备<small>刷新设备时发现本机常见模拟器，并重连手动连接过的 TCP 设备；重启 ADB 后也会重连。不扫描局域网，不自动选择任务设备。保存后立即生效。</small></span></label>
       <label><input type="checkbox" role="switch" [(ngModel)]="config.video_enabled" [disabled]="busy() || loading() || !loaded()" />
@@ -51,6 +52,8 @@ interface Capabilities {
       }
       <label><input type="checkbox" role="switch" [(ngModel)]="config.outputter_enabled" [disabled]="busy() || loading() || !loaded()" />
         <span>最终报告生成<small>根据执行记录生成任务结果报告。</small></span></label>
+      <label><input type="checkbox" role="switch" aria-label="Flash 最终 AI 判定与分析" [(ngModel)]="config.flash_final_check_enabled" [disabled]="busy() || loading() || !loaded()" />
+        <span>Flash 最终 AI 判定与分析<small>默认关闭。开启后，在 Flash 执行结束时根据用例需求和执行步骤复核结果，会增加耗时。关闭时显示“执行完成 · 未做 AI 判定”，仍保留步骤和报告。不影响 Pro。</small></span></label>
       <label><input type="checkbox" role="switch" [(ngModel)]="config.step_summarizer_enabled" [disabled]="busy() || loading() || !loaded()" />
         <span>步骤摘要压缩<small>Flash 模式下在后台生成摘要，减少长任务的上下文占用。</small></span></label>
       <label><input type="checkbox" role="switch" [(ngModel)]="config.screenshot_limit_enabled" [disabled]="busy() || loading() || !loaded()" />
@@ -96,7 +99,7 @@ interface Capabilities {
 export class CapabilitySettingsComponent implements OnInit {
   changed = output<Capabilities>();
   private http = inject(HttpClient);
-  config: Capabilities = { adb_auto_connect: true, adb_discovery_interval_seconds: 10, adb_discovery_timeout_seconds: 5, video_enabled: false, recording_enabled: false, outputter_enabled: true, step_summarizer_enabled: true, screenshot_limit_enabled: true, screenshot_max_long_edge: 2048, task_timeout_seconds: 1800, observation_timeout_seconds: 60, observation_max_attempts: 3, device_command_timeout_seconds: 10, action_failure_attempts: 3, worker_cleanup_timeout_seconds: 30 };
+  config: Capabilities = { adb_auto_connect: true, adb_discovery_interval_seconds: 10, adb_discovery_timeout_seconds: 5, video_enabled: false, recording_enabled: false, outputter_enabled: true, flash_final_check_enabled: false, step_summarizer_enabled: true, screenshot_limit_enabled: true, screenshot_max_long_edge: 2048, task_timeout_seconds: 1800, observation_timeout_seconds: 60, observation_max_attempts: 3, device_command_timeout_seconds: 10, action_failure_attempts: 3, worker_cleanup_timeout_seconds: 30 };
   busy = signal(false); loading = signal(true); loaded = signal(false); message = signal(''); error = signal('');
   ngOnInit(): void {
     this.http.get<Capabilities>('/api/system/capability-settings').pipe(timeout(UI_READ_TIMEOUT_MS), finalize(() => this.loading.set(false))).subscribe({