feat(api): ADR-030 Phase 2 診斷資料收集強化

實作智能自動修復系統的資料收集層：

1. k8s_diagnostics.py - K8s 診斷服務
   - Pod Events/Logs/ResourceUsage 收集
   - CrashLoopBackOff/OOM/ImagePull 偵測
   - 非同步並行收集 + 錯誤容忍

2. diagnosis_aggregator.py - 診斷聚合器
   - 整合 K8s + SignOz + Expert Rules
   - DiagnosisContext 提供結構化 LLM Prompt
   - DiagnosisSignal 信號分析

3. decision_manager.py - 決策引擎整合
   - Step 2.5 加入診斷收集
   - 傳遞 diagnosis_context 給 LLM

4. openclaw.py - LLM Prompt 增強
   - 整合 K8s/SignOz 深度診斷上下文
   - 支援 diagnosis_signals 摘要

ADR-030 架構: 診斷先行，根因分析，非盲目重啟

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api/src/services/openclaw.py

@@ -1119,10 +1119,22 @@ Trace URL: {signoz_trace_url}
 """
 
         # 2026-03-27: 整合 Expert System 診斷上下文
+        # 2026-03-26: ADR-030 Phase 2 - 加入 K8s/SignOz 診斷上下文
         expert_diagnosis_context = ""
         if expert_context:
             diagnosis_cmds = expert_context.get("suggested_diagnosis_commands", [])
             diagnosis_cmds_str = "\n".join([f"  - `{cmd}`" for cmd in diagnosis_cmds]) if diagnosis_cmds else "  - (無)"
+
+            # ADR-030: 加入完整診斷上下文 (如果有)
+            full_diagnosis = expert_context.get("diagnosis_context", "")
+            diagnosis_signals = expert_context.get("diagnosis_signals", [])
+            signals_summary = ""
+            if diagnosis_signals:
+                signals_summary = "\n".join([
+                    f"  - [{s.get('severity', 'info').upper()}] {s.get('source', 'unknown')}: {s.get('message', 'N/A')[:100]}"
+                    for s in diagnosis_signals[:5]
+                ])
+
             expert_diagnosis_context = f"""
 ## 🔍 Expert System Initial Diagnosis
 - **Matched Rule**: {expert_context.get('initial_diagnosis', 'unknown')}
@@ -1132,8 +1144,15 @@ Trace URL: {signoz_trace_url}
 - **Suggested Diagnosis Commands**:
 {diagnosis_cmds_str}
 
-**IMPORTANT**: The Expert System has provided an initial diagnosis.
-Consider this context but apply your own analysis. If Expert says "human review required",
+{f'''## 🩺 K8s/SignOz Deep Diagnosis (ADR-030)
+{full_diagnosis}
+
+### Diagnosis Signals
+{signals_summary if signals_summary else "  - (No signals detected)"}
+''' if full_diagnosis else ''}
+
+**IMPORTANT**: The Expert System and Diagnostic Aggregator have provided context.
+Consider this data but apply your own analysis. If Expert says "human review required",
 provide diagnostic guidance rather than automated fixes.
 """