refactor: ClawBot → OpenClaw 全域更名

- 刪除舊版 clawbot.py (已有新版 openclaw.py)
- 更新 models/ai.py 類型定義 (ClawBotAnalysisRequest/Response)
- 更新 api/v1/ai.py import 與註解
- 更新 Discord username
- 更新所有註解與文檔

依據: feedback_openclaw_naming.md (統帥 2026-03-20 正式命名決議)

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

apps/api/src/plugins/finops/cost_analyzer.py

@@ -9,7 +9,7 @@ Phase 3.3: 商業變現能力 - Day-1 ROI
 
 輸出格式:
 - total_wasted_usd: 每月浪費金額
-- recommended_actions: ClawBot 可執行的建議清單
+- recommended_actions: OpenClaw 可執行的建議清單
 """
 
 import logging
@@ -78,7 +78,7 @@ class SavingsType(str, Enum):
 
 @dataclass
 class RecommendedAction:
-    """建議的優化動作 (ClawBot 可執行)"""
+    """建議的優化動作 (OpenClaw 可執行)"""
     action_id: str
     action_type: Literal["delete", "scale_down", "resize", "migrate"]
     resource_type: ResourceType
@@ -87,7 +87,7 @@ class RecommendedAction:
     description: str
     estimated_savings_usd: float
     risk_level: Literal["low", "medium", "high", "critical"]
-    command_hint: str  # 給 ClawBot 的執行提示
+    command_hint: str  # 給 OpenClaw 的執行提示
     savings_type: SavingsType = SavingsType.REALIZABLE  # 節省類型
 
     def to_dict(self) -> dict:
@@ -107,7 +107,7 @@ class RecommendedAction:
 
 @dataclass
 class CostReport:
-    """成本報告 (ClawBot 整合用)"""
+    """成本報告 (OpenClaw 整合用)"""
     scan_id: str
     scanned_at: datetime
     cluster_name: str
@@ -126,13 +126,13 @@ class CostReport:
     waste_by_namespace: dict[str, float]
 
     def to_dict(self) -> dict:
-        """輸出 ClawBot 可讀取的 JSON 格式"""
+        """輸出 OpenClaw 可讀取的 JSON 格式"""
         return {
             "scanId": self.scan_id,
             "scannedAt": self.scanned_at.isoformat(),
             "clusterName": self.cluster_name,
 
-            # ClawBot 核心關注
+            # OpenClaw 核心關注
             "totalWastedUsd": round(self.total_wasted_usd, 2),
             "totalResourcesScanned": self.total_resources_scanned,
             "wastedResourcesCount": self.wasted_resources_count,
@@ -217,7 +217,7 @@ class IdleResourceScanner:
     閒置資源掃描器
 
     偵測並量化 K8s 叢集中的浪費資源，
-    轉換為美金金額，供 ClawBot 決策
+    轉換為美金金額，供 OpenClaw 決策
     """
 
     def __init__(self, pricing: PricingConfig | None = None):
@@ -490,7 +490,7 @@ class IdleResourceScanner:
         wasted: list[WastedResource],
     ) -> list[RecommendedAction]:
         """
-        產生優化建議 (ClawBot 可執行)
+        產生優化建議 (OpenClaw 可執行)
         """
         actions = []
         action_counter = 0
@@ -585,7 +585,7 @@ class IdleResourceScanner:
         ╚════════════════════════════════════════════════════════════════╝
 
         Returns:
-            ClawBot 可直接使用的 JSON 格式
+            OpenClaw 可直接使用的 JSON 格式
         """
         realizable = sum(
             a.estimated_savings_usd