- HookError now includes optional stack field
- Hook error display shows stack trace in dim color below error message
- tools.ts: create SettingsListTheme using the theme passed to ctx.ui.custom()
instead of using getSettingsListTheme() which depends on global theme
- /tools command opens SettingsList-based selector for all loaded tools
- Space/Enter toggles individual tools between enabled/disabled
- Changes apply immediately on toggle (like /settings)
- Tool selection persisted to session via appendEntry()
- State restored from current branch on session_start, session_tree, session_branch
- Uses getBranch() to respect branch-specific tool configuration
- Export getSettingsListTheme and getSelectListTheme for hooks to use
