feedbackSurveyRate: 0 does not suppress session quality survey

Bug

Setting feedbackSurveyRate: 0 in ~/.claude/settings.json does not suppress the session quality survey prompt ("How is Claude doing this session?"). The prompt continues to appear despite the setting being correctly configured.

Steps to Reproduce

1. Add { "feedbackSurveyRate": 0 } to ~/.claude/settings.json
2. Use Claude Code normally
3. Survey prompt still appears

Expected Behavior

The survey prompt should never appear when feedbackSurveyRate is set to 0.

Environment

• macOS (Darwin 25.3.0)
• Claude Code CLI

Additional Context

Pressing 0 (Dismiss) on the prompt itself also does not permanently suppress it. There is no reliable way for users to disable this prompt. The number input (1/2/3/0) gets submitted as a message to the conversation, causing confusion.