[Feature Request] Display context usage percentage in Plan Mode options dialog

Bug Description
can you add the current context usage percentage when Plan Mode presents these four options? because if the context useage is still low, i dont want to clear it. but like if its at 75% or more before i accept a plan, then i do want to clear it. but without knowing the current usage, i dont know what i want to do. i included a screenshot for clarity but not sure if it works that way.

<img width="715" height="134" alt="Image" src="https://github.com/user-attachments/assets/3272476b-86ea-45ca-b210-35aeaf7912c7" />

Environment Info

• Platform: win32
• Terminal: windows-terminal
• Version: 2.1.22
• Feedback ID: 9bed852c-2bfe-40bc-9ab2-74909f3ee38a

Errors

[{"error":"Error: ENOENT: no such file or directory, scandir 'C:\\ProgramData\\ClaudeCode\\.claude\\skills'\n    at readdirSync (unknown)\n    at <anonymous> (B:/~BUN/root/claude.exe:12:2063)\n    at oX (B:/~BUN/root/claude.exe:11:35454)\n    at readdirSync (B:/~BUN/root/claude.exe:12:2024)\n    at H6$ (B:/~BUN/root/claude.exe:1756:380)\n    at H6$ (B:/~BUN/root/claude.exe:1756:1350)\n    at <anonymous> (B:/~BUN/root/claude.exe:1756:4670)\n    at <anonymous> (B:/~BUN/root/claude.exe:1756:5401)\n    at A (B:/~BUN/root/claude.exe:11:7259)\n    at pxE (B:/~BUN/root/claude.exe:4818:4342)","timestamp":"2026-01-28T18:39:23.454Z"},{"error":"AbortError: The operation was aborted.\n    at unknown\n    at abortChildProcess (node:child_process:947:42)\n    at onAbortListener2 (node:child_process:35:24)\n    at abort (unknown)\n    at <anonymous> (B:/~BUN/root/claude.exe:6299:13192)","timestamp":"2026-01-28T18:39:34.552Z"}]