"/terminal-setup command missing in Alacritty terminal"

Bug Description
/terminal-setup command isn't available on alacritty - I don't know if this is due to some limitation of alacritty, but the command not being available is confusing. I think at very least, the command should be available, and give a message that my terminal emulator isn't supported if that's the case.

Environment Info

• Platform: macos
• Terminal: alacritty
• Version: 1.0.3
• Feedback ID: 0e920629-8097-4eae-a997-b024fc584186

Errors

[{"error":"Error: Command failed: security find-generic-password -a $USER -w -s \"Claude Code\"\nsecurity: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n\n    at genericNodeError (node:internal/errors:983:15)\n    at wrappedFn (node:internal/errors:537:14)\n    at checkExecSyncError (node:child_process:882:11)\n    at execSync (node:child_process:954:15)\n    at cG (file:///Users/greg/.nvm/versions/node/v22.12.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:644:3513)\n    at file:///Users/greg/.nvm/versions/node/v22.12.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:574:15313\n    at Q (file:///Users/greg/.nvm/versions/node/v22.12.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:532:13335)\n    at sR1 (file:///Users/greg/.nvm/versions/node/v22.12.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:574:14562)\n    at aI (file:///Users/greg/.nvm/versions/node/v22.12.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:574:14179)\n    at FU2 (file:///Users/greg/.nvm/versions/node/v22.12.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1965:20997)","timestamp":"2025-05-25T01:49:20.059Z"}]