feat(ui): add enter-to-submit toggle for prompt input

packages/ui/src/lib/hooks/use-commands.ts

@@ -31,6 +31,7 @@ export interface UseCommandsOptions {
   toggleShowTimelineTools: () => void
   toggleUsageMetrics: () => void
   toggleAutoCleanupBlankSessions: () => void
+  togglePromptSubmitOnEnter: () => void
   setDiffViewMode: (mode: "split" | "unified") => void
   setToolOutputExpansion: (mode: ExpansionPreference) => void
   setDiagnosticsExpansion: (mode: ExpansionPreference) => void
@@ -423,6 +424,18 @@ export function useCommands(options: UseCommandsOptions) {
       },
     })
 
+    commandRegistry.register({
+      id: "prompt-submit-shortcut",
+      label: () =>
+        options.preferences().promptSubmitOnEnter
+          ? tGlobal("commands.promptSubmitShortcut.label.swapped")
+          : tGlobal("commands.promptSubmitShortcut.label.default"),
+      description: () => tGlobal("commands.promptSubmitShortcut.description"),
+      category: "Input & Focus",
+      keywords: () => splitKeywords("commands.promptSubmitShortcut.keywords"),
+      action: options.togglePromptSubmitOnEnter,
+    })
+
     commandRegistry.register({
       id: "thinking",
       label: () => tGlobal(options.preferences().showThinkingBlocks ? "commands.thinkingBlocks.label.hide" : "commands.thinkingBlocks.label.show"),