fix(moonshot): resolve 401 Unauthorized errors by trimming API keys and improving request compatibility

internal/config/config.go

@@ -203,5 +203,5 @@ func (c *Config) GetAPIKey(provider string) (string, error) {
 	if val == "" {
 		return "", fmt.Errorf("environment variable %s not set for %s", envVar, provider)
 	}
-	return val, nil
+	return strings.TrimSpace(val), nil
 }

internal/providers/helpers.go

@@ -58,9 +58,20 @@ func MessagesToOpenAIJSON(messages []models.UnifiedMessage) ([]interface{}, erro
 			}
 		}
 
+		var finalContent interface{}
+		if len(parts) == 1 {
+			if p, ok := parts[0].(map[string]interface{}); ok && p["type"] == "text" {
+				finalContent = p["text"]
+			} else {
+				finalContent = parts
+			}
+		} else {
+			finalContent = parts
+		}
+
 		msg := map[string]interface{}{
 			"role":    m.Role,
-			"content": parts,
+			"content": finalContent,
 		}
 
 		if m.ReasoningContent != nil {

internal/providers/moonshot.go

@@ -21,7 +21,7 @@ func NewMoonshotProvider(cfg config.MoonshotConfig, apiKey string) *MoonshotProv
 	return &MoonshotProvider{
 		client: resty.New(),
 		config: cfg,
-		apiKey: apiKey,
+		apiKey: strings.TrimSpace(apiKey),
 	}
 }
 
@@ -43,11 +43,15 @@ func (p *MoonshotProvider) ChatCompletion(ctx context.Context, req *models.Unifi
 		}
 	}
 
+	baseURL := strings.TrimRight(p.config.BaseURL, "/")
+
 	resp, err := p.client.R().
 		SetContext(ctx).
 		SetHeader("Authorization", "Bearer "+p.apiKey).
+		SetHeader("Content-Type", "application/json").
+		SetHeader("Accept", "application/json").
 		SetBody(body).
-		Post(fmt.Sprintf("%s/chat/completions", p.config.BaseURL))
+		Post(fmt.Sprintf("%s/chat/completions", baseURL))
 
 	if err != nil {
 		return nil, fmt.Errorf("request failed: %w", err)
@@ -79,12 +83,16 @@ func (p *MoonshotProvider) ChatCompletionStream(ctx context.Context, req *models
 		}
 	}
 
+	baseURL := strings.TrimRight(p.config.BaseURL, "/")
+
 	resp, err := p.client.R().
 		SetContext(ctx).
 		SetHeader("Authorization", "Bearer "+p.apiKey).
+		SetHeader("Content-Type", "application/json").
+		SetHeader("Accept", "text/event-stream").
 		SetBody(body).
 		SetDoNotParseResponse(true).
-		Post(fmt.Sprintf("%s/chat/completions", p.config.BaseURL))
+		Post(fmt.Sprintf("%s/chat/completions", baseURL))
 
 	if err != nil {
 		return nil, fmt.Errorf("request failed: %w", err)