Peel off another tiny display-component cleanup batch (#318)

This third pass continues the issue #314 cleanup series with four very small display-oriented components. The changes only remove unused React imports and reconnect existing Props aliases or parameter types where the files were otherwise surfacing straightforward compiler noise.

Constraint: Keep the pass limited to trivial display components with uniform low-risk cleanup shape
Rejected: Mix in files with unrelated missing-module or broader logic noise | weakens review focus and muddies verification
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Prefer these tiny homogeneous slices while the repo still has wider baseline no-unused noise
Tested: bun run build; bun run smoke; targeted noUnused grep for touched files via bun x tsc --noEmit --noUnusedLocals --noUnusedParameters --pretty false
Not-tested: full repo typecheck (broader baseline noise remains outside this pass)

Co-authored-by: anandh8x <test@example.com>

src/components/ChannelDowngradeDialog.tsx

@@ -1,5 +1,4 @@
 import { c as _c } from "react-compiler-runtime";
-import React from 'react';
 import { Text } from '../ink.js';
 import { Select } from './CustomSelect/index.js';
 import { Dialog } from './design-system/Dialog.js';
@@ -13,7 +12,7 @@ type Props = {
  * Dialog shown when switching from latest to stable channel.
  * Allows user to choose whether to downgrade or stay on current version.
  */
-export function ChannelDowngradeDialog(t0) {
+export function ChannelDowngradeDialog(t0: Props) {
   const $ = _c(17);
   const {
     currentVersion,
@@ -21,7 +20,7 @@ export function ChannelDowngradeDialog(t0) {
   } = t0;
   let t1;
   if ($[0] !== onChoice) {
-    t1 = function handleSelect(value) {
+    t1 = function handleSelect(value: ChannelDowngradeChoice) {
       onChoice(value);
     };
     $[0] = onChoice;