TypeError in settings validation: Cannot assign to read only property '0' of object '[object String]'

## Bug Description
Claude Code throws a TypeError when validating settings.json with hook configuration.

## Error Output
TypeError: Cannot assign to read only property '0' of object '[object String]'
at KOB (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:609:6891)
at UOB (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:609:7092)
at YyB (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:609:31595)
at LyB (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:609:32717)
at file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:1806:87
at Array.forEach ()
at Sl6 (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:1806:38)
at file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:1806:593
at Array.map ()
at iJB (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:1806:444)

## Settings Configuration
```json
{
"hooks": {
"tool-use-submit": [
{
"command": "if [[ \"$CLAUDE_TOOL_NAME\" == \"Bash\" && (\"$CLAUDE_COMMAND\" == \"mvn test\" || \"$CLAUDE_COMMAND\" == \"mvn clean test\") ]]; then exit 0; else exit 1; fi",
"description": "Auto-approve Maven test commands"
}
]
}
}

## Steps to Reproduce

  1. Create ~/.claude/settings.json with the above content
  2. Run claude /doctor
  3. Error occurs during settings validation

  Environment

  - OS: macOS (Darwin 24.5.0)
  - claude --version: 1.0.56 (Claude Code)

---
Claude wrote almost all of this bug report after i fed it the output of "claude /doctor".  I fixed the formatting a tiny bit & I added the claude version number at the end.  Please let me know if you need something else.