chore: drop undo from the docs (#8431)

codex-rs/tui/tooltips.txt

@@ -1,6 +1,5 @@
 Use /compact when the conversation gets long to summarize history and free up context.
 Start a fresh idea with /new; the previous session stays in history.
-If a turn went sideways, /undo asks Codex to revert the last changes.
 Use /feedback to send logs to the maintainers when something looks off.
 Switch models or reasoning effort quickly with /model.
 You can run any shell command from Codex using `!` (e.g. `!ls`)

codex-rs/tui2/tooltips.txt

@@ -1,6 +1,5 @@
 Use /compact when the conversation gets long to summarize history and free up context.
 Start a fresh idea with /new; the previous session stays in history.
-If a turn went sideways, /undo asks Codex to revert the last changes.
 Use /feedback to send logs to the maintainers when something looks off.
 Switch models or reasoning effort quickly with /model.
 You can run any shell command from Codex using `!` (e.g. `!ls`)

docs/config.md

@@ -45,7 +45,6 @@ Supported features:
 | `apply_patch_freeform`                |  false  | Beta         | Include the freeform `apply_patch` tool               |
 | `view_image_tool`                     |  true   | Stable       | Include the `view_image` tool                         |
 | `web_search_request`                  |  false  | Stable       | Allow the model to issue web searches                 |
-| `undo`                                |  true   | Experimental | Capture a ghost snapshot each turn to enable undo     |
 | `enable_experimental_windows_sandbox` |  false  | Experimental | Use the Windows restricted-token sandbox              |
 | `tui2`                                |  false  | Experimental | Use the experimental TUI v2 (viewport) implementation |
 | `skills`                              |  false  | Experimental | Enable discovery and injection of skills              |

docs/example-config.md

@@ -217,7 +217,6 @@ unified_exec = false
 apply_patch_freeform = false
 view_image_tool = true
 web_search_request = false
-undo = true
 enable_experimental_windows_sandbox = false
 skills = false
 

docs/slash_commands.md

@@ -19,7 +19,6 @@ Control Codex’s behavior during an interactive session with slash commands.
 | `/resume`       | resume an old chat                                                         |
 | `/init`         | create an AGENTS.md file with instructions for Codex                       |
 | `/compact`      | summarize conversation to prevent hitting the context limit                |
-| `/undo`         | ask Codex to undo a turn                                                   |
 | `/diff`         | show git diff (including untracked files)                                  |
 | `/mention`      | mention a file                                                             |
 | `/status`       | show current session configuration and token usage                         |