Termux Bash Shell Not Working After Update

Bug Description
The bash mode was working till the last update. I use termux on android and when I try to run a bash command I have this error (SHELL env var is set):

````
Command failed: No suitable shell found. Claude CLI
requires a Posix shell environment. Please ensure
you have a valid shell installed and the SHELL
environment variable set.

````

Environment Info

• Platform: linux
• Terminal: xterm-256color
• Version: 0.2.30
• Feedback ID: b6deef64-eac7-4377-8ee9-7007eafad16a