[Bug] Statusline context percentage misaligned with actual context usage calculation

Bug Description
Statusline context percentage doesn't match actual context usage.

Environment:

• Claude Code 2.1.31
• Windows 11 + WezTerm
• Model: Opus 4.5

Issue:

• Statusline showed: 84%
• But "Context left until auto-compact" showed: 0%
• Token count: 167483 tokens

Expected: If context is nearly full (0% left), statusline should show ~100%, not 84%.

The statusline percentage appears to lag behind or calculate differently than the actual context window state. This makes it unreliable for monitoring when auto-compact will trigger.

Environment Info

• Platform: win32
• Terminal: WezTerm
• Version: 2.1.31
• Feedback ID: c49399b7-fe0d-43a1-bde3-ebbdb64f85aa

Errors

[{"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:3096:209)","timestamp":"2026-02-04T03:54:14.439Z"},{"error":"Error: Request was aborted.\n    at makeRequest (B:/~BUN/root/claude.exe:379:3940)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-04T06:56:33.388Z"},{"error":"Error: Request was aborted.\n    at makeRequest (B:/~BUN/root/claude.exe:379:3940)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-04T07:33:40.441Z"},{"error":"Error: Request was aborted.\n    at makeRequest (B:/~BUN/root/claude.exe:379:3940)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-04T08:13:54.371Z"},{"error":"Error: Request was aborted.\n    at makeRequest (B:/~BUN/root/claude.exe:379:3940)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-04T08:29:47.201Z"},{"error":"Error\n    at uh (B:/~BUN/root/claude.exe:42:1144)\n    at <anonymous> (B:/~BUN/root/claude.exe:47:10089)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (B:/~BUN/root/claude.exe:49:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-05T01:07:12.938Z"},{"error":"Error\n    at uh (B:/~BUN/root/claude.exe:42:1144)\n    at <anonymous> (B:/~BUN/root/claude.exe:47:10089)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (B:/~BUN/root/claude.exe:49:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-05T01:07:40.996Z"},{"error":"Error\n    at uh (B:/~BUN/root/claude.exe:42:1144)\n    at <anonymous> (B:/~BUN/root/claude.exe:47:10089)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (B:/~BUN/root/claude.exe:49:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-05T01:07:57.960Z"},{"error":"Error\n    at uh (B:/~BUN/root/claude.exe:42:1144)\n    at <anonymous> (B:/~BUN/root/claude.exe:47:10089)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (B:/~BUN/root/claude.exe:49:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-05T01:15:02.240Z"},{"error":"Error: Request was aborted.\n    at makeRequest (B:/~BUN/root/claude.exe:379:3940)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-05T01:36:33.569Z"},{"error":"Error: Request was aborted.\n    at NG$ (B:/~BUN/root/claude.exe:1569:23586)\n    at XnI (B:/~BUN/root/claude.exe:5737:1933)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-05T01:38:30.134Z"},{"error":"Error: Compaction interrupted · This may be due to network issues — please try again.\n    at B0E (B:/~BUN/root/claude.exe:2929:5398)\n    at async y6H (unknown)\n    at async KYI (unknown)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-05T01:38:30.137Z"},{"error":"Error: Request was aborted.\n    at NG$ (B:/~BUN/root/claude.exe:1569:23586)\n    at XnI (B:/~BUN/root/claude.exe:5737:1933)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-05T01:38:30.192Z"}]