## What's changed
- Added an optional `spellcheck` setting that underlines misspelled words in the prompt input as you type, using your installed `aspell`, `hunspell`, or `ispell`
- Fixed whole-prompt-cache invalidation when a language server disconnected or reconnected mid-session
- Fixed nested markdown list items misaligning at depth 3+ and added a hanging indent to wrapped list items in the terminal UI
- Fixed prompt input highlights (slash commands, keywords, mentions) appearing shifted by one or more characters in some multi-line prompts
- Fixed Shift+Tab inside the permission prompt's comment field approving the edit and granting session-wide edit permission instead of closing the field
- Fixed the Agent tool advertising a general-purpose default in sessions where that agent is unavailable: an omitted `subagent_type` there now gets a clear error listing the available agents
- Fixed notebook cell delete/replace approval dialogs silently omitting the existing cell content when the notebook or cell could not be read; the dialog now says why
- Fixed slash commands run while Claude is responding showing HTML entities instead of the actual characters
- Fixed the prompt footer not showing the "Update installed" restart notice after a background auto-update
- Fixed the expanded task list (`ctrl+t`) always starting collapsed when resuming or relaunching into a session that still has open tasks
- Improved memory and CPU usage while cloud sessions such as `/ultrareview` or `/autofix-pr` run in the background — their event streams are no longer re-scanned and re-rendered on every update
- Improved permission dialogs: display text and "don't ask again" options now always match what a grant would cover, and "don't ask again" is withheld when contents cannot be fully displayed
- Improved the embedded `grep` in native macOS/Linux builds: pathological patterns now fail fast instead of exhausting memory, and `-m N` with `-A/-C` prints correct context
- Improved the context-limit error to say when auto-compact is off and point to `/config` to re-enable it
- Vim mode: NORMAL mode and cursor position are now preserved when toggling the detailed transcript (ctrl+o) or closing a panel
- Dialogs: arrow keys and Enter pressed in quick succession now select the option you navigated to instead of the previously highlighted one
- `SendMessage` now refuses messages too large for cross-session delivery up front instead of silently dropping them
- Remote Control: `claude rc` now applies the same enterprise-gateway availability check as interactive startup
- [VSCode] Fixed focus jumping between open Claude tabs on its own when a window with several Claude panels is restored or reloaded