[Feature Request] Fix input prompt bar to bottom of screen for visibility when scrolled

Bug Description
Hello. It would be great to have the input prompt typing bar to be fixed at the bottom of screen such that i can see what i am typing even when i have scrolled up a lot.

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.0.75
• Feedback ID: 1ce32643-c9b7-4b3c-b1bb-78ca0bc841a1

Errors

[{"error":"Error: Request was aborted.\n    at _createMessage (/$bunfs/root/claude:458:3157)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-21T02:43:21.679Z"},{"error":"Error: Request was aborted.\n    at _createMessage (/$bunfs/root/claude:458:3157)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-21T02:43:57.619Z"},{"error":"Error: Request was aborted.\n    at _createMessage (/$bunfs/root/claude:458:3157)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-21T02:44:28.910Z"}]