This pull request updates the documentation on WordPress Playground limitations, improving both the English and Spanish versions. The changes clarify technical details, update performance expectations, and add a new section highlighting recent improvements. The Spanish translation is also significantly enhanced for accuracy, clarity, and consistency with the English source.

Documentation improvements:

• Added a "Recent improvements" section to both English and Spanish docs, outlining resolved limitations such as large file downloads, PHP curl uploads, long-running PHP responses, and improved error handling for failed downloads. [1] [2]
• Updated performance expectations: clarified WASM file sizes (now 5–15MB per PHP version), initial memory allocation, and browser/device-specific performance notes. [1] [2]
• Improved explanations for iframe quirks, WP-CLI support, and how to persist work in Playground, with clearer instructions and more accurate technical details. [1] [2]

Spanish translation enhancements:

• Significantly revised the Spanish translation for accuracy, clarity, and consistency, including improvements to terminology, formatting, and explanatory comments.
• Updated Spanish content to match new English sections, including the "Recent improvements" section and revised guidance on performance, browser support, and development tips. [1] [2]