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## Why Interrupting an active turn is currently fixed to `Esc`, which is easy to hit accidentally and cannot be customized through `/keymap`. This gives users a less accidental binding while preserving the existing default. ## What Changed - Adds `tui.keymap.chat.interrupt_turn` to `/keymap`, defaulting to `esc` and supporting remapping or unbinding. - Uses the configured interrupt binding for running-turn status, queued steer interruption, and `request_user_input`, including the visible hints. - Preserves local `Esc` behavior for popups, Vim insert mode, and `/agent` editing while validating conflicts with fixed/backtrack and request-input navigation bindings. - Adds behavior and snapshot coverage for remapped interruption paths. ## How to Test 1. Run Codex and open `/keymap`, then set **Interrupt Turn** to `f12`. 2. Start a turn and confirm `Esc` no longer interrupts it while `f12` does; the running hint should display `f12 to interrupt`. 3. Queue a steer while a turn is running and confirm the preview displays `f12`; pressing it should interrupt and submit the steer immediately. 4. Trigger a `request_user_input` prompt and confirm its footer uses `f12`; with notes open, `Esc` should still clear notes while `f12` interrupts the turn. 5. Clear the Interrupt Turn binding and confirm the key-specific interrupt hint is removed while `Ctrl+C` remains available. Targeted validation: - `just write-config-schema` - `just fix -p codex-config` - `just fix -p codex-tui` - `just fmt` - `just argument-comment-lint-from-source -p codex-config -p codex-tui` - `just test -p codex-config` - `cargo insta pending-snapshots --manifest-path tui/Cargo.toml` - `just test -p codex-tui keymap_setup::tests` - `just test -p codex-tui` (fails in two pre-existing guardian feature-flag tests unrelated to this diff; the intentional picker snapshot updates were reviewed and accepted)