Faster rate-limit 2.0.x

Bug Description
rate-limit hitting way more faster with the same regular usage. i almost never hit limit in the past 8 months, now after the 2.0.x updates hitting limits EVERYDAY

Environment Info

• Platform: darwin
• Terminal: ghostty
• Version: 2.1.5
• Feedback ID: 88629855-8078-43d5-bf89-aea1bf0728e4

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/leo/.local/share/claude/versions/2.1.5 (expected in multi-process scenarios)\n    at lhR (/$bunfs/root/claude:2770:2157)\n    at yEA (/$bunfs/root/claude:2770:1268)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-12T03:54:19.182Z"},{"error":"Error: EISDIR: illegal operation on a directory, read\n    at readFileSync (unknown)\n    at <anonymous> (/$bunfs/root/claude:12:535)\n    at p2 (/$bunfs/root/claude:11:34650)\n    at readFileSync (/$bunfs/root/claude:12:494)\n    at UP_ (/$bunfs/root/claude:4612:23313)\n    at call (/$bunfs/root/claude:1615:945)\n    at call (/$bunfs/root/claude:1611:6420)\n    at eB8 (/$bunfs/root/claude:3199:27250)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-12T04:00:21.814Z"},{"error":"Error: Request was aborted.\n    at makeRequest (/$bunfs/root/claude:858:3940)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-12T04:05:24.805Z"},{"error":"Error: 429 {\"type\":\"error\",\"error\":{\"type\":\"rate_limit_error\",\"message\":\"This request would exceed your account's rate limit. Please try again later.\"},\"request_id\":\"req_011CX2po3h6bgq3F5dNJsaeh\"}\n    at generate (/$bunfs/root/claude:442:33840)\n    at makeRequest (/$bunfs/root/claude:858:5435)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-12T04:07:05.361Z"},{"error":"Error: 429 {\"type\":\"error\",\"error\":{\"type\":\"rate_limit_error\",\"message\":\"This request would exceed your account's rate limit. Please try again later.\"},\"request_id\":\"req_011CX2pptsL47toerXjinZ7V\"}\n    at generate (/$bunfs/root/claude:442:33840)\n    at makeRequest (/$bunfs/root/claude:858:5435)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-12T04:07:30.437Z"},{"error":"Error: 429 {\"type\":\"error\",\"error\":{\"type\":\"rate_limit_error\",\"message\":\"This request would exceed your account's rate limit. Please try again later.\"},\"request_id\":\"req_011CX2pptay32Z14MGw81DgP\"}\n    at generate (/$bunfs/root/claude:442:33840)\n    at makeRequest (/$bunfs/root/claude:858:5435)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-12T04:07:30.892Z"},{"error":"SyntaxError: JSON Parse error: Expected '}'\n    at <parse> (:0)\n    at parse (unknown)\n    at <anonymous> (/$bunfs/root/claude:78:708)\n    at A (/$bunfs/root/claude:11:7247)\n    at eb_ (/$bunfs/root/claude:1596:3074)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-12T04:07:30.893Z"},{"error":"Error: 429 {\"type\":\"error\",\"error\":{\"type\":\"rate_limit_error\",\"message\":\"This request would exceed your account's rate limit. Please try again later.\"},\"request_id\":\"req_011CX2sFdfDQBA4BKGj7wZ1t\"}\n    at generate (/$bunfs/root/claude:442:33840)\n    at makeRequest (/$bunfs/root/claude:858:5435)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-12T04:39:19.677Z"}]