fix(app): mark prompt submit/newline commands disabled

Per Copilot review on anomalyco#23430: registering the commands with their
default Enter / Shift+Enter keybinds put them in the global command
keymap. When focus was on a non-editable target (a <button>, etc.) the
global handler would match, call preventDefault/stopPropagation, and
invoke the undefined onSelect \u2014 silently swallowing Enter across the
whole app.

`disabled: true` excludes them from `keymap()` build in
context/command.tsx while the catalog, options, and settings UI still
list them (none of those code paths filter by disabled). Local dispatch
in prompt-input.tsx is unaffected because handleKeyDown reads keybinds
directly from `settings.keybinds`, not from the registered command
option.

Author: CasualDeveloper

packages/app/src/components/prompt-input.tsx

@@ -127,16 +127,24 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
   // the Keyboard Shortcuts settings UI (grouped under "Prompt" via the
   // "prompt." id prefix). The actual dispatch stays local in handleKeyDown
   // below so the editor always wins over the global keymap.
+  //
+  // `disabled: true` excludes these from the global keymap in context/command
+  // so a focused non-editable target (e.g. a <button>) pressing Enter isn't
+  // silently swallowed by the global handler. The catalog entries remain
+  // visible in settings-keybinds.tsx because catalog population doesn't
+  // filter by disabled.
   command.register(() => [
     {
       id: PROMPT_SUBMIT_ID,
       title: language.t("command.prompt.submit"),
       keybind: DEFAULT_PROMPT_SUBMIT_KEYBIND,
+      disabled: true,
     },
     {
       id: PROMPT_NEWLINE_ID,
       title: language.t("command.prompt.newline"),
       keybind: DEFAULT_PROMPT_NEWLINE_KEYBIND,
+      disabled: true,
     },
   ])