fix: handle close errors

integrations/jikan/client.go

@@ -236,11 +236,6 @@ func (c *Client) setCache(parentCtx context.Context, key string, data any, ttl t
 	})
 }
 
-type cacheResult struct {
-	data     any
-	hasStale bool
-}
-
 // isEmptyResult detects if response contains no meaningful data.
 func isEmptyResult(out any) bool {
 	switch v := out.(type) {
@@ -336,7 +331,7 @@ func (c *Client) fetchWithRetry(ctx context.Context, urlStr string, out any) err
 			}
 
 			if retryable && attempt < maxRetries-1 {
-				resp.Body.Close()
+				_ = resp.Body.Close()
 				delay := max(retryAfter, retryDelay(attempt))
 
 				if retryErr := waitForRetry(ctx, delay); retryErr != nil {
@@ -347,7 +342,7 @@ func (c *Client) fetchWithRetry(ctx context.Context, urlStr string, out any) err
 			}
 
 			err = json.NewDecoder(resp.Body).Decode(out)
-			resp.Body.Close()
+			_ = resp.Body.Close()
 			if err == nil {
 				return nil
 			}
@@ -356,7 +351,7 @@ func (c *Client) fetchWithRetry(ctx context.Context, urlStr string, out any) err
 		}
 
 		err = json.NewDecoder(resp.Body).Decode(out)
-		resp.Body.Close()
+		_ = resp.Body.Close()
 		if err == nil {
 			return nil
 		}

integrations/jikan/relations.go

@@ -155,7 +155,7 @@ func (c *Client) GetFullRelations(ctx context.Context, id int) ([]RelationEntry,
 	}
 
 	go func() {
-		g.Wait()
+		_ = g.Wait()
 		close(results)
 	}()
 

integrations/watchorder/watch_order.go

@@ -106,7 +106,7 @@ func fetchDocument(ctx context.Context, httpClient *http.Client, url string) (*g
 	if err != nil {
 		return nil, fmt.Errorf("request failed: %w", err)
 	}
-	defer response.Body.Close()
+	defer func() { _ = response.Body.Close() }()
 
 	if response.StatusCode != http.StatusOK {
 		// limit body read for error context; avoid reading large error pages
@@ -235,7 +235,7 @@ func fetchProxyText(ctx context.Context, httpClient *http.Client, url string) (s
 	if err != nil {
 		return "", fmt.Errorf("proxy request failed: %w", err)
 	}
-	defer response.Body.Close()
+	defer func() { _ = response.Body.Close() }()
 
 	if response.StatusCode != http.StatusOK {
 		return "", fmt.Errorf("proxy status %d", response.StatusCode)