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### `desktopSessionCleanupPeriodDays`
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626626| [`crossSessionInbound`](#crosssessioninbound) | Choose whether Claude Code delivers [messages from your other sessions](/docs/en/cross-session-messaging#control-inbound-messages), shows a notice without delivering them, or refuses them | Agents, sessions, and worktrees | Any file |
627627| [`defaultShell`](#defaultshell) | Choose whether Bash or PowerShell runs the shell commands you type with the [`!` prefix](/docs/en/interactive-mode#shell-mode-with-prefix) | Interface and terminal | Any file |
628628| [`deniedMcpServers`](#deniedmcpservers) | Block specific [MCP servers](/docs/en/mcp) by URL, command, or name | MCP | Any file |
629| [`desktopSessionCleanupPeriodDays`](#desktopsessioncleanupperioddays) | Set an age limit in days for [Claude Desktop and Cowork transcripts](/docs/en/claude-directory#cleaned-up-automatically) | Privacy and telemetry | User or managed |
629630| [`dialogExpiry`](#dialogexpiry) | Set how long Claude Code waits for [Remote Control](/docs/en/remote-control) or an SDK host to answer a forwarded dialog before it cancels the dialog | Interface and terminal | User or managed |
630631| [`diffTool`](#difftool) | Choose whether Claude's proposed file changes open in the [VS Code](/docs/en/vs-code) or [JetBrains](/docs/en/jetbrains#features) diff viewer or stay in the terminal | Global config settings | Global config |
631632| [`disableAgentView`](#disableagentview) | Turn off background agents and [agent view](/docs/en/agent-view) | Agents, sessions, and worktrees | Any file |
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34263427 * `false`: voice dictation is off, unless `voice.enabled` is set
34273428* **Default**: unset
34283429
3429```json settings.json theme={null}
3430{
3431 "voiceEnabled": true
3432}
3433```
3434
3435### `wheelScrollAccelerationEnabled`
3436
3437Accelerate mouse-wheel scroll speed during fast scrolls in [fullscreen rendering](/docs/en/fullscreen#mouse-wheel-scrolling). Set it to `false` for a constant scroll rate per wheel notch. Requires Claude Code v2.1.174 or later.
3438
3439* **Scope**: [`Any file`](#scopes)
3440* **Type**: Boolean
3441 * `t
3430```js
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