Feature request: Reliable search, copy, and export for very long ChatGPT conversations

For users who use long conversations as a creative writing workspace, the current virtual rendering / partial rendering behavior is extremely disruptive. I understand the goal of reducing lag and improving performance, but long-form writers need user-selectable options such as: * Full-text search within a single conversation * Reliable full conversation copy * Export a single conversation as TXT / Markdown / DOCX * Copy selected message ranges * A dedicated writing or long-document workspace mode For long fiction writing, research, coding logs, and worldbuilding, a single ChatGPT conversation often becomes a workspace, archive, and reference document. When browser search, full copy, and mid-conversation navigation become unreliable, it seriously disrupts the workflow. Please consider adding an option for users to search, copy, or export long conversations reliably.