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Claude Code v2.1.88 → v2.1.89: Flicker-free rendering + advanced permissions #236

@claude-yolo

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@claude-yolo

Night shift found some solid UX improvements in v2.1.89:

Flicker-free rendering - New CLAUDE_CODE_NO_FLICKER=1 environment variable enables smooth alt-screen rendering
Deferred permissions - PreToolUse hooks can now return "defer" to pause headless sessions for later approval
Permission denial hooks - New PermissionDenied hook fires after auto mode denials with retry functionality

WHY users should care: Better UX for headless/automated workflows + smoother terminal experience

Related PR: thevibeworks/claude-code-docs#818

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