[Bug] Excessive token usage for short messages (4% usage for "hi")

Bug Description
my message "hi" ate 4% of my usage. Is this real and expected to be?

Environment Info

• Platform: darwin
• Terminal: WarpTerminal
• Version: 2.1.81
• Feedback ID: d3ae45f7-1609-42c7-9936-8919c5a52c02

Errors

[{"error":"Error: EISDIR: illegal operation on a directory, read '/Users/jr/Downloads/src/tools/shared'\n    at B$_ (/$bunfs/root/src/entrypoints/cli.js:925:8336)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-01T16:14:22.930Z"},{"error":"Error: EISDIR: illegal operation on a directory, read '/Users/jr/Downloads/src/tools/AgentTool'\n    at B$_ (/$bunfs/root/src/entrypoints/cli.js:925:8336)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-01T16:14:28.001Z"},{"error":"Error: EISDIR: illegal operation on a directory, read '/Users/jr/Downloads/src/services/api'\n    at B$_ (/$bunfs/root/src/entrypoints/cli.js:925:8336)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-01T16:14:31.460Z"},{"error":"Error: EISDIR: illegal operation on a directory, read '/Users/jr/Downloads/src/bootstrap'\n    at B$_ (/$bunfs/root/src/entrypoints/cli.js:925:8336)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-01T16:14:42.527Z"},{"error":"Error: File does not exist. Note: your current working directory is /Users/jr/Downloads/src. Did you mean useCanUseTool.tsx?\n    at call (/$bunfs/root/src/entrypoints/cli.js:4321:6398)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-01T16:14:47.546Z"},{"error":"Error: EISDIR: illegal operation on a directory, read '/Users/jr/Downloads/src'\n    at B$_ (/$bunfs/root/src/entrypoints/cli.js:925:8336)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-01T16:14:54.574Z"}]