[Bug] Claude 3.5 Opus regression: Logic errors in file operations and data handlingc

Bug Description
over multiple sessions today, Opus 4.7 is making dumb mistakes. Dumb mistakes I never saw with 4.6 - confusing a credit with a spend, confusing issue numbers, overwriting files that clearly shouldn't have been. I'm not one of these users that complains everytime you have a new version. This really seems like a regression.

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.117
• Feedback ID: 83d213f3-715e-4480-9788-4a9dc32c42cf

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/greg/.local/share/claude/versions/2.1.117 (expected in multi-process scenarios)\n    at fn_ (/$bunfs/root/src/entrypoints/cli.js:2754:2177)\n    at H98 (/$bunfs/root/src/entrypoints/cli.js:2754:1257)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T16:35:09.309Z"}]