[Bug] Bash Mode: Tab Completion Broken, Triggers Thinking Mode

Bug Description
When using ! (bash mode), tab turns on thinking mode instead of doing path completion.

What's wrong
When pressing ! at the start of the line, it turns into Bash Mode, when I want to use a long command like "claude-session-uuid", I type cl<tab> it doesn't update the command to claude (nearest match) and instead turns on Thinking mode.

What should happen
Thinking mode toggle should be turned off in bash mode, it should complete using bash-completion or similar.

Steps to Reproduce

1. Press ! to get the pink Bash Mode prompt.
2. Type clau
3. Press <tab>
4. Thinking mode turns, clau isn't completed to claude

Claude Code Version
v2.0.5

Operating System
Linux (ArchLinux)

Terminal/Shell
Kitty / Bash