claude-app/.claude/settings.json

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "Edit|Write",
        "hooks": [
          {
            "type": "command",
            "command": "$CLAUDE_PROJECT_DIR/.claude/hooks/format-rs.sh",
            "statusMessage": "Formatting Rust code..."
          }
        ]
      }
    ],
    "PreToolUse": [
      {
        "matcher": "Edit|Write",
        "hooks": [
          {
            "type": "command",
            "command": "$CLAUDE_PROJECT_DIR/.claude/hooks/block-cargo-lock.sh"
          }
        ]
      }
    ]
  }
}