feat(agents): add Cursor CLI agent support - #187

Process completed with exit code 1.

Error: spawn EFTYPE ❯ src/core/agents/cursor.ts:286:21 ❯ CursorAgent.run src/core/agents/cursor.ts:284:12 ❯ src/core/agents/cursor.linger.integration.test.ts:53:32 ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Serialized Error: { errno: -4028, code: 'EFTYPE', syscall: 'spawn' }