[Bug] Claude Code plugin fails to detect running JetBrains IDE instance

Bug Description
Official Claude Code plugin for JetBrains IDE is not working. RustRover 2026.1 EAP. I receive a notification in the IDE that says "Cannot launch Claude Code". However, the terminal does open and start Claude Code. But it does not connect to the IDE. Entering "/ide" will return:

Connect to an IDE for integrated development features.                                                                                                                                                  
                                                                                                                                                                                                            
No available IDEs detected. Make sure your IDE has the Claude Code extension or plugin installed and is running. 

Environment Info

• Platform: darwin
• Terminal: jetbrains
• Version: 2.1.71
• Feedback ID: c1afba6a-2a11-4a2d-8819-49dbbe94f2f9

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/eduardo/.local/share/claude/versions/2.1.71 (expected in multi-process scenarios)\n    at Xxq (/$bunfs/root/src/entrypoints/cli.js:2603:2066)\n    at zU8 (/$bunfs/root/src/entrypoints/cli.js:2603:1210)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-07T21:11:58.363Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at tZ_ (/$bunfs/root/src/entrypoints/cli.js:2478:18454)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-07T21:11:58.384Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at tZ_ (/$bunfs/root/src/entrypoints/cli.js:2478:18454)\n    at async f (/$bunfs/root/src/entrypoints/cli.js:4594:16495)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-07T21:11:58.495Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at tZ_ (/$bunfs/root/src/entrypoints/cli.js:2478:18454)\n    at async X (/$bunfs/root/src/entrypoints/cli.js:4594:17211)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-07T21:11:58.496Z"}]