Worked on stabilizing PDF processing in the zed-industries/gemini-cli repository by addressing context-window overflow warnings during PDF workflows. The solution involved refining the token estimation logic to exclude binary data, ensuring that large binaries would not trigger overflow conditions. A dedicated function was introduced to estimate the text-only length of requests, further preventing processing issues with lengthy PDFs. All changes were implemented using TypeScript, with a focus on full stack development and thorough testing. Documentation and tests were updated to reflect the new binary-data handling approach, laying groundwork for future improvements in PDF and binary data processing reliability.