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/llm-request-status/llm-request-status.component.html

@@ -47,7 +47,7 @@
               @if (review.last_failure_category) { <dt>最近错误类别</dt><dd>{{ review.last_failure_category }}</dd> }
               @if (review.status === 'budget_exhausted') { <dt>结束原因</dt><dd class="error">取证、模型请求与重试已耗尽验收总预算；未确认通过。</dd> }
               @if (review.status === 'request_retries_exhausted') { <dt>结束原因</dt><dd class="error">验收模型请求重试已用尽；未确认通过，没有重跑设备操作。</dd> }
-              @if (review.status === 'cancelled') { <dt>结束原因</dt><dd>验收被停止或指导中断，不作为请求超时重试。</dd> }
+              @if (review.status === 'cancelled') { <dt>结束原因</dt><dd>{{ cancellationReason(review.cancel_reason) }}</dd> }
             </dl>
           </details>
         }
@@ -57,7 +57,12 @@
             <dl>
               <dt>本地请求编号</dt><dd>{{ request.request_id }}</dd>
               <dt>本次尝试编号</dt><dd>{{ request.attempt_id }}</dd>
+              @if (request.previous_attempt_id) { <dt>上次尝试编号</dt><dd>{{ request.previous_attempt_id }}</dd> }
+              <dt>出站请求编号</dt><dd>{{ request.client_request_id || '未记录' }}</dd>
               <dt>服务端请求编号</dt><dd>{{ request.server_request_id || '服务未提供' }}</dd>
+              <dt>响应编号</dt><dd>{{ request.response_id || '服务未提供' }}</dd>
+              @if (request.server_trace_id) { <dt>服务端链路编号</dt><dd>{{ request.server_trace_id }}</dd> }
+              @if (request.traceparent) { <dt>链路上下文</dt><dd>{{ request.traceparent }}</dd> }
               <dt>模型配置</dt><dd>{{ request.model || '未记录' }} / {{ request.reasoning_effort || '默认' }} · 第 {{ request.attempt }} 次请求，最多重试 {{ request.max_retries }} 次</dd>
               @if (request.final_review; as review) { <dt>所属最终验收</dt><dd>{{ review.review_id }} · {{ reviewStage(review) }} · 请求记录时剩余 {{ review.remaining_seconds }} 秒</dd> }
               <dt>输出 Token 上限</dt><dd>{{ request.max_output_tokens || '未设置（由模型服务决定）' }}</dd>
@@ -68,6 +73,8 @@
               <dt>首个有效输出</dt><dd>{{ request.first_output_at ? (request.first_output_at * 1000 | date:'HH:mm:ss.SSS') : '未收到／未记录' }}</dd>
               <dt>最后有效输出</dt><dd>{{ request.last_output_at ? (request.last_output_at * 1000 | date:'HH:mm:ss.SSS') : '未收到／未记录' }}</dd>
               <dt>结束时间</dt><dd>{{ request.ended_at ? (request.ended_at * 1000 | date:'HH:mm:ss.SSS') : '尚未记录' }}</dd>
+              @if (termination(request); as reason) { <dt>结束原因</dt><dd>{{ reason }}</dd> }
+              @if (request.cancel_phase) { <dt>中断阶段</dt><dd>{{ phase(request.cancel_phase) }}</dd> }
               <dt>输入图片</dt><dd>{{ request.images.length }} 张 @for (image of request.images; track $index) { <span class="image-size">{{ image.width && image.height ? image.width + ' × ' + image.height : '尺寸未知' }}</span> }</dd>
               <dt>Token 用量</dt><dd>{{ request.usage ? '输入 ' + request.usage.prompt_tokens + ' / 输出 ' + request.usage.completion_tokens + ' / 合计 ' + request.usage.total_tokens : '未知（服务未报告）' }}</dd>
               @if (request.error) { <dt>失败原因</dt><dd class="error">{{ request.error_type }} · {{ request.error }} · 阶段 {{ phase(request.failure_phase || '') }} @if (request.category) { · {{ request.category }} }</dd> }