`/ide` command fails with "onInstall is not defined" error

Description

Running the /ide command in Claude Code fails with the error onInstall is not defined.

Steps to Reproduce

1. Open Claude Code in terminal
2. Run /ide command
3. Error occurs immediately

Error Message

ERROR  onInstall is not defined

file:///Users/terry/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:4084:2901

- Su2 (file:///Users/terry/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:4084:2901)
- m6 (file:///Users/terry/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:597:62981)
- WAA (file:///Users/terry/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:597:76041)
- u$ (file:///Users/terry/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:597:75921)
- WAA (file:///Users/terry/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:597:76830)
- u$ (file:///Users/terry/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:597:75921)
- WAA (file:///Users/terry/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:597:76020)
- u$ (file:///Users/terry/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:597:75921)
- WAA (file:///Users/terry/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:597:76020)
- u$ (file:///Users/terry/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:597:75921)

Environment

• Claude Code version: 2.1.21 (latest)
• Node.js version: v22.14.0
• OS: macOS (Darwin 25.2.0)
• Installation method: npm global install

Expected Behavior

The /ide command should successfully connect Claude Code to the JetBrains IDE.

Actual Behavior

Command fails immediately with onInstall is not defined error.

Workaround

Using Cmd+Esc from within the JetBrains IDE works as an alternative to connect Claude Code with IDE integration.