feat: prepare 2.2.0 with UI and execution fixes

Add dark theme, richer Markdown and readable plugin results.
Improve Android input evidence, response integrity and diagnostics.
Unify lifecycle, guidance receipts and evidence sources across clients.
Keep direct action dispatch without an added AI quota approval layer.
Align version metadata at 2.2.0 and bundle Helper 1.2.2.

Validation: 3063 backend tests before the version bump; 44 after.
Frontend: 317 tests and production build passed.

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

@@ -29,7 +29,7 @@ interface Capabilities {
   template: `
     <section aria-label="功能开关">
       <h3>功能开关</h3>
-      <p>按需启用，保存后对尚未开始的任务生效，不影响运行中的任务。</p>
+      <p>Flash 最终 AI 判定切换后自动保存；其余设置点击底部按钮保存。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()" />
@@ -52,7 +52,7 @@ 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()" />
+      <label><input type="checkbox" role="switch" aria-label="Flash 最终 AI 判定与分析" [ngModel]="config.flash_final_check_enabled" (ngModelChange)="saveFlashFinalCheck($event)" [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>
@@ -77,33 +77,55 @@ interface Capabilities {
       @if (error()) { <p role="alert" class="error">{{ error() }}</p> }
     </section>
   `,
-  styles: [`section { margin-top: 24px; padding-top: 20px; border-top: 1px solid #64748b55; }
-    h3 { margin: 0 0 8px; } p, small { color: #64748b; line-height: 1.6; }
+  styles: [`section { margin-top: 24px; padding-top: 20px; border-top: 1px solid rgb(var(--app-border-control-rgb, 100 116 139) / 0.3333); }
+    h3 { margin: 0 0 8px; } p, small { color: var(--app-text-muted, #64748b); line-height: 1.6; }
     label { display: flex; gap: 12px; align-items: flex-start; padding: 14px 0; cursor: pointer; }
-    input { width: 20px; height: 20px; accent-color: #0284c7; flex-shrink: 0; }
+    input { width: 20px; height: 20px; accent-color: var(--app-info-text, #0284c7); flex-shrink: 0; }
     small { display: block; margin-top: 4px; } button { padding: 10px 18px; border-radius: 10px; border: 1px solid #38bdf877; background: #0284c7; color: white; font: inherit; cursor: pointer; }
-    button:disabled { opacity: .5; cursor: default; } .error { color: #be123c; }
-    .execution-settings { margin: 12px 0 20px; padding: 12px 14px; border: 1px solid #cbd5e1; border-radius: 10px; background: #f8fafc; }
-    summary { cursor: pointer; font-weight: 600; color: #334155; }
+    button:disabled { opacity: .5; cursor: default; } .error { color: var(--app-error-text, #be123c); }
+    .execution-settings { margin: 12px 0 20px; padding: 12px 14px; border: 1px solid var(--app-border-control, #cbd5e1); border-radius: 10px; background: var(--app-surface-soft, #f8fafc); }
+    summary { cursor: pointer; font-weight: 600; color: var(--app-text-control, #334155); }
     .number-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; }
-    .number-fields label { display: block; padding: 0; color: #334155; }
-    .number-fields input, .number-fields select { box-sizing: border-box; display: block; width: 100%; height: auto; margin-top: 8px; padding: 9px; border: 1px solid #cbd5e1; border-radius: 8px; font: inherit; }
-    section {font-size:13px;border-color:#e2e8f0}h3 {font-size:15px;color:#334155}
-    section > label {align-items:center;flex-direction:row-reverse;justify-content:space-between;border-bottom:1px solid #f1f5f9;gap:20px}section > label > span {flex:1}small {font-size:12px}
-    input[role=switch] {appearance:none;position:relative;width:36px;height:22px;border:1px solid #cbd5e1;border-radius:20px;background:#e2e8f0;cursor:pointer;transition:background .15s}
-    input[role=switch]::after {content:'';position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0f172a25;transition:transform .15s}
-    input[role=switch]:checked {background:#6366f1;border-color:#6366f1}input[role=switch]:checked::after {transform:translateX(14px)}input[role=switch]:focus-visible {outline:2px solid #a5b4fc;outline-offset:3px}input:disabled {opacity:.5;cursor:default}
-    button {background:#4f46e5;border-color:#4f46e5;border-radius:12px;font-weight:600}.execution-settings {border-color:#e2e8f0;border-radius:14px;padding:14px 16px}.number-fields input,.number-fields select {background:#fff;border-color:#dbe3ec}
+    .number-fields label { display: block; padding: 0; color: var(--app-text-control, #334155); }
+    .number-fields input, .number-fields select { box-sizing: border-box; display: block; width: 100%; height: auto; margin-top: 8px; padding: 9px; border: 1px solid var(--app-border-control, #cbd5e1); border-radius: 8px; font: inherit; }
+    section {font-size:13px;border-color:var(--app-border, #e2e8f0)}h3 {font-size:15px;color:var(--app-text-control, #334155)}
+    section > label {align-items:center;flex-direction:row-reverse;justify-content:space-between;border-bottom:1px solid var(--app-border, #f1f5f9);gap:20px}section > label > span {flex:1}small {font-size:12px}
+    input[role=switch] {appearance:none;position:relative;width:36px;height:22px;border:1px solid var(--app-border-control, #cbd5e1);border-radius:20px;background:var(--app-surface-raised, #e2e8f0);cursor:pointer;transition:background .15s}
+    input[role=switch]::after {content:'';position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:var(--app-surface, #fff);box-shadow:0 1px 3px #0f172a25;transition:transform .15s}
+    input[role=switch]:checked {background:#6366f1;border-color:#6366f1}input[role=switch]:checked::after {transform:translateX(14px)}input[role=switch]:focus-visible {outline:2px solid var(--app-primary-border, #a5b4fc);outline-offset:3px}input:disabled {opacity:.5;cursor:default}
+    button {background:#4f46e5;border-color:#4f46e5;border-radius:12px;font-weight:600}.execution-settings {border-color:var(--app-border, #e2e8f0);border-radius:14px;padding:14px 16px}.number-fields input,.number-fields select {background:var(--app-surface, #fff);border-color:var(--app-border, #dbe3ec)}
     @media(max-width: 480px) { .number-fields { grid-template-columns: 1fr; } }`]
 })
 export class CapabilitySettingsComponent implements OnInit {
   changed = output<Capabilities>();
   private http = inject(HttpClient);
+  private savedConfig: Capabilities | null = null;
   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({
-      next: config => { this.config = config; this.loaded.set(true); this.changed.emit(config); }, error: () => this.error.set('功能配置加载失败，请刷新页面重试。')
+      next: config => { this.savedConfig = structuredClone(config); this.config = config; this.loaded.set(true); this.changed.emit(config); }, error: () => this.error.set('功能配置加载失败，请刷新页面重试。')
+    });
+  }
+  saveFlashFinalCheck(enabled: boolean): void {
+    if (this.busy() || !this.loaded() || !this.savedConfig) return;
+    const previous = this.savedConfig.flash_final_check_enabled;
+    this.config.flash_final_check_enabled = enabled;
+    this.busy.set(true); this.message.set('正在保存 Flash 判定设置…'); this.error.set('');
+    // Preserve other settings that are still being edited, including invalid drafts.
+    const update = { ...this.savedConfig, flash_final_check_enabled: enabled };
+    this.http.post<Capabilities>('/api/system/capability-settings', update).pipe(finalize(() => this.busy.set(false))).subscribe({
+      next: config => {
+        this.savedConfig = structuredClone(config);
+        this.config.flash_final_check_enabled = config.flash_final_check_enabled;
+        this.changed.emit(config);
+        this.message.set(`Flash 最终 AI 判定已${config.flash_final_check_enabled ? '开启' : '关闭'}，尚未开始的任务将使用此设置，无需重启服务。`);
+      },
+      error: () => {
+        this.config.flash_final_check_enabled = previous;
+        this.message.set('');
+        this.error.set('Flash 判定设置保存失败，开关已恢复。请检查连接后重新切换。');
+      }
     });
   }
   save(): void {
@@ -113,7 +135,7 @@ export class CapabilitySettingsComponent implements OnInit {
     }
     this.busy.set(true); this.message.set(''); this.error.set('');
     this.http.post<Capabilities>('/api/system/capability-settings', this.config).pipe(finalize(() => this.busy.set(false))).subscribe({
-      next: config => { this.config = config; this.changed.emit(config); this.message.set('功能设置已保存，新任务将使用此配置。'); },
+      next: config => { this.savedConfig = structuredClone(config); this.config = config; this.changed.emit(config); this.message.set('功能设置已保存，新任务将使用此配置。'); },
       error: () => this.error.set('保存失败，请检查服务器连接和 .env 文件权限。')
     });
   }