[Feature Request] Add option to specify Claude model version

Bug Description
opus4.7 is terrible and breaking things i need option to go back to 4.6

Environment Info

• Platform: darwin
• Terminal: vscode
• Version: 2.1.118
• Feedback ID: 6e674019-0b02-4366-b4be-557f87328f83

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/peter/.local/share/claude/versions/2.1.118 (expected in multi-process scenarios)\n    at ai_ (/$bunfs/root/src/entrypoints/cli.js:2756:2177)\n    at IK8 (/$bunfs/root/src/entrypoints/cli.js:2756:1257)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-23T15:37:33.562Z"},{"error":"Error: 1: Command failed with ERR_STREAM_PREMATURE_CLOSE: code --force --install-extension anthropic.claude-code\nPremature close \n    at jZ1 (/$bunfs/root/src/entrypoints/cli.js:1707:4045)\n    at async wZ1 (/$bunfs/root/src/entrypoints/cli.js:1707:1435)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-23T15:37:34.644Z"}]