1. Enforce maxRetries: track auto-fix attempts per query chain in toolHooks.ts
and stop feeding errors back after the configured limit is reached.
2. Wire abort signal to subprocess: subscribe to AbortController signal in
runCommand() and kill the process tree on abort. Uses detached process
groups on Unix to ensure child processes are also terminated.
3. Replace hardcoded bash with shell:true: use Node's cross-platform shell
resolution instead of spawn('bash', ['-c', ...]) so auto-fix commands
work on Windows and non-bash environments.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>