refactor(api): Phase B P1 可靠性強化 (2 項)

1. send_cicd_progress 重試機制 (指數退避 1,2,4 秒)
2. K8s Repository 封裝 (IK8sRepository + K8sRepository)

首席架構師審查 P1 改進 - 模組化合規

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

apps/api/src/repositories/interfaces.py

@@ -371,3 +371,67 @@ class IEmbeddingCacheRepository(Protocol):
     async def remove(self, playbook_id: str) -> bool:
         """移除 Playbook 向量"""
         ...
+
+
+@runtime_checkable
+class IK8sRepository(Protocol):
+    """
+    K8s Repository Protocol
+
+    職責: K8s API 操作 (Pods/Deployments/Events)
+    實作: K8sRepository (kubernetes_asyncio)
+
+    版本: v1.0
+    建立: 2026-03-30 (台北時區)
+    建立者: Claude Code (首席架構師 P1 改進)
+
+    設計原則:
+    - Service 層不直接呼叫 kubernetes_asyncio
+    - 透過 Repository 進行 K8s 操作
+    - 符合 leWOOOgo 積木化原則
+    """
+
+    async def list_pods(
+        self,
+        namespace: str = "awoooi",
+    ) -> list[dict]:
+        """
+        列出 Namespace 下的 Pods
+
+        Returns:
+            list[{name, phase, ready, restarts, age}]
+        """
+        ...
+
+    async def list_deployments(
+        self,
+        namespace: str = "awoooi",
+    ) -> list[dict]:
+        """
+        列出 Namespace 下的 Deployments
+
+        Returns:
+            list[{name, ready_replicas, replicas, available}]
+        """
+        ...
+
+    async def get_pod_status_summary(
+        self,
+        namespace: str = "awoooi",
+    ) -> dict:
+        """
+        取得 Pod 狀態摘要
+
+        Returns:
+            {total, running, pending, failed, problem_pods: [...]}
+        """
+        ...
+
+    async def is_available(self) -> bool:
+        """
+        檢查 K8s API 是否可用
+
+        Returns:
+            True 如果 K8s 連線正常
+        """
+        ...