FIX: Implement WebDAV Move and simplified move file handler

go_cloud/internal/storage/webdav.go

@@ -216,3 +216,60 @@ func (c *WebDAVClient) Delete(ctx context.Context, remotePath string) error {
 	body, _ := io.ReadAll(resp.Body)
 	return fmt.Errorf("webdav delete failed: %d %s", resp.StatusCode, string(body))
 }
+
+// Move moves/renames a file using WebDAV MOVE method
+func (c *WebDAVClient) Move(ctx context.Context, sourcePath, targetPath string) error {
+	if c == nil {
+		return fmt.Errorf("no webdav client configured")
+	}
+
+	sourceRel := strings.TrimLeft(sourcePath, "/")
+	targetRel := strings.TrimLeft(targetPath, "/")
+	
+	u := c.basePrefix
+	if u == "/" || u == "" {
+		u = ""
+	}
+	u = strings.TrimRight(u, "/")
+
+	// Build source URL
+	var sourceURL string
+	if u == "" {
+		sourceURL = fmt.Sprintf("%s/%s", c.baseURL, url.PathEscape(sourceRel))
+	} else {
+		sourceURL = fmt.Sprintf("%s%s/%s", c.baseURL, u, url.PathEscape(sourceRel))
+	}
+	sourceURL = strings.ReplaceAll(sourceURL, "%2F", "/")
+
+	// Build target URL
+	var targetURL string
+	if u == "" {
+		targetURL = fmt.Sprintf("%s/%s", c.baseURL, url.PathEscape(targetRel))
+	} else {
+		targetURL = fmt.Sprintf("%s%s/%s", c.baseURL, u, url.PathEscape(targetRel))
+	}
+	targetURL = strings.ReplaceAll(targetURL, "%2F", "/")
+
+	req, err := http.NewRequestWithContext(ctx, "MOVE", sourceURL, nil)
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Destination", targetURL)
+	if c.user != "" {
+		req.SetBasicAuth(c.user, c.pass)
+	}
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode >= 200 && resp.StatusCode < 300 {
+		return nil
+	}
+
+	body, _ := io.ReadAll(resp.Body)
+	return fmt.Errorf("webdav move failed: %d %s", resp.StatusCode, string(body))
+}
+