Stray '>' character appears at prompt line after response completes

Description

A stray > character intermittently appears at the beginning of the Claude Code prompt line after a response completes. The prompt shows ❯_> instead of just ❯_.

Environment

• OS: macOS (Darwin 25.3.0)
• Terminal: iTerm2
• Shell: zsh
• Status line: enabled (bypass permissions on)
• Voice: enabled
• Hooks: Stop hook (session-summary.py writing to stderr only)

Reproduction

• Happens intermittently after responses complete
• Not tied to any specific response content or tool usage
• The > is cosmetic only — typing normally clears it and input is unaffected
• Observed across multiple sessions

Analysis

Checked potential causes:

• Shell prompt ($PROMPT): %T: — no > character
• Hooks: Both Stop hooks (session-summary.py, speak-response.py) write to stderr/files, not stdout
• Settings: No custom keybindings or prompt configuration

Likely a TUI rendering artifact from ANSI escape sequences or status line updates leaving behind a character.

Expected behavior

Prompt should show only ❯ with the cursor, no extra characters.

Actual behavior

Prompt occasionally shows ❯_> with a stray > character after a response completes.