[Bug] Duplicate text + tool-call blocks after tool error on Linux TUI (v2.1.185)

Bug Description

When a tool call fails with an error, the retry sometimes renders the preceding text output and the tool call block twice in the terminal. The duplicated block is an exact copy — same text, same tool invocation, same error output.

Observed pattern

1. Assistant outputs explanatory text ("原因と対処が明確になった...")
2. Assistant calls a tool (wpctl settings --save ...) → tool returns error
3. The same text block + tool call appears again in the terminal output
4. Assistant then proceeds with a different approach

This happened twice in the same session — once for the wpctl command and once for a wpctl --version call immediately after.

Screenshot of actual output

● 原因と対処が明確になった。
  原因: WirePlumber の bluetooth.autoswitch-to-headset-profile が有効で...
  対処: 自動切り替えを無効にする。一行で済む:
● Bash(wpctl settings --save bluetooth.autoswitch-to-headset-profile false && echo "Done")
  ⎿  Error: Exit code 1 ...

● 原因と対処が明確になった。                        ← DUPLICATE
  原因: WirePlumber の bluetooth.autoswitch-to-headset-profile が有効で...
  対処: 自動切り替えを無効にする。一行で済む:
● Bash(wpctl settings --save bluetooth.autoswitch-to-headset-profile false && echo "Done")
  ⎿  Error: Exit code 1 ...                         ← DUPLICATE

● バージョンが古い。設定ファイルで対処する。          ← actual continuation

Context

• The session had been running for a while and had gone through context compaction at least once
• Hooks were active (UserPromptSubmit, SubagentStart, PostToolUse, Stop, TaskCompleted)
• Model: claude-opus-4-6 (1M context)
• outputStyle: Concise
• This is NOT a terminal resize/scroll issue — it happened during normal streaming output

Possibly related

• #53492 — similar duplicate output report on Linux (v2.1.119, gnome-terminal)
• #52924 — TUI duplicates rendered text in scrollback on long sessions
• #64209 — Tool-layer unreliability in long/compacted sessions

Environment Info

• Platform: Linux (Ubuntu, kernel 6.17.0-35-generic)
• Terminal: likely gnome-terminal or kitty (standard desktop session)
• Claude Code version: 2.1.185
• Shell: zsh