docs: add CLI v0.31.0 changelog entry (#486)

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

Author: factory-ben

docs/changelog/cli-updates.mdx

@@ -4,6 +4,29 @@ description: "Recent features and improvements to Factory CLI"
 rss: true
 ---
 
+<Update label="December 4" rss={{ title: "CLI Updates", description: "GPT-5.1-Codex-Max model, image compression, IDE auto-connect, and input fixes" }}>
+  `v0.31.0`
+
+  ## New features
+
+  * **GPT-5.1-Codex-Max model** - Added support for GPT-5.1-Codex-Max model
+  * **Image compression** - Images are now compressed before upload to reduce bandwidth
+  * **IDE auto-connect setting** - Added setting to automatically connect to IDE from external terminals
+  * **Disable hooks flag** - Added `--no-hooks` flag to disable hooks execution
+
+  ## Bug fixes
+
+  * Improved Droid docs search
+  * Long Execute tool commands now truncated in the UI header
+  * Fixed on-disk images not being cleared after upload
+  * Fixed thinking level changing mid-conversation by locking it per agent turn
+  * Fixed review preset items using incorrect color for non-selected items
+  * Fixed input box handling of multi-width characters like CJK and emoji
+  * Fixed left/right arrow key navigation when @ suggestion menu is open
+  * Bundled code-signed ripgrep binary for improved security and reliability
+
+</Update>
+
 <Update label="December 3" rss={{ title: "CLI Updates", description: "Hidden file search, session search, image indicators, and ESC key fixes" }}>
   `v0.30.0`