feat(api): enhance strategy handling by integrating claw402 wallet key validation

Added validation for the claw402 model's wallet key during strategy test runs. If the selected AI model is claw402, the server now checks for a valid wallet key and returns appropriate error messages if it's missing or if the model fails to load. This ensures better error handling and user feedback when working with AI models.

api/strategy.go

@@ -516,8 +516,31 @@ func (s *Server) handleStrategyTestRun(c *gin.Context) {
 		req.PromptVariant = "balanced"
 	}
 
+	claw402WalletKey := ""
+	if req.AIModelID != "" {
+		model, err := s.store.AIModel().Get(userID, req.AIModelID)
+		if err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{
+				"error":       "Failed to load selected AI model",
+				"ai_response": "",
+			})
+			return
+		}
+
+		if model.Provider == "claw402" {
+			claw402WalletKey = string(model.APIKey)
+			if claw402WalletKey == "" {
+				c.JSON(http.StatusBadRequest, gin.H{
+					"error":       "Selected claw402 model is missing wallet private key",
+					"ai_response": "",
+				})
+				return
+			}
+		}
+	}
+
 	// Create strategy engine to build prompt
-	engine := kernel.NewStrategyEngine(&req.Config)
+	engine := kernel.NewStrategyEngine(&req.Config, claw402WalletKey)
 
 	// Get candidate coins
 	candidates, err := engine.GetCandidateCoins()