Move the console onto ReUI PRO

Install ReUI (MCP, skill, @reui registry, Tailwind v4, shadcn base-nova) and move
the shared UI onto it: Button, Tag, Check, Input/Textarea, Segmented, Alert, Panel,
Dialog, Tooltip, Menu and Select (Popover), Toast (sonner), the Table frame
(DataGrid), the Dashboard KPI strip, the shnt Ops palette, Geist and the type scale.

Design only: behaviour, texts and roles are unchanged. Tests that asserted the old
DOM were updated; the tests now format numbers in English wherever they run.
docs/reui-migration-plan.md records the plan and its decisions.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/screens/apps/UpdateApp.tsx

@@ -0,0 +1,80 @@
+import { useEffect, useRef, useState } from 'react'
+import { updateApp } from '../../api/apps'
+import { Button } from '../../ui/Button'
+import { Dialog } from '../../ui/Dialog'
+import { LabeledInput } from '../../ui/Field'
+import { error, type AlertState } from './Apps'
+import { Notifier } from '../../ui/Notifier'
+
+/*
+A replica of `showUpdateAppModal` / `updateApp` (apps.js:211-218 and 381-423).
+
+The name comes filled in and DISABLED (index.html:6232): updating is replacing
+the zip of an app that already exists, not renaming it. Only the file is
+validated here, just as in upstream.
+*/
+export function UpdateApp({
+  open,
+  onOpenChange,
+  token,
+  name,
+  onUpdated,
+}: {
+  open: boolean
+  onOpenChange: (o: boolean) => void
+  token: string | null
+  name: string
+  onUpdated: (name: string) => void
+}) {
+  const [alert, setAlert] = useState<AlertState | null>(null)
+  const [busy, setBusy] = useState(false)
+  const fileRef = useRef<HTMLInputElement>(null)
+
+  useEffect(() => {
+    if (open) {
+      setAlert(null)
+      setBusy(false)
+    }
+  }, [open])
+
+  async function update() {
+    const file = fileRef.current?.files?.[0]
+    if (!file) {
+      setAlert({
+        type: 'warning',
+        title: 'Missing!',
+        text: 'Please select an application zip file to update.',
+      })
+      return
+    }
+
+    setBusy(true)
+    const outcome = await updateApp(token, name, file)
+    setBusy(false)
+
+    if (outcome.kind !== 'ok') {
+      setAlert(error(outcome))
+      return
+    }
+    onUpdated(name)
+  }
+
+  return (
+    <Dialog
+      open={open}
+      onOpenChange={onOpenChange}
+      title="Update App"
+      actions={
+        <>
+          <Button variant="primary" disabled={busy} onClick={() => void update()}>
+            Update
+          </Button>
+        </>
+      }
+    >
+      <Notifier notice={alert} onClose={() => setAlert(null)} />
+      <LabeledInput label="App Name" value={name} disabled readOnly />
+      <LabeledInput label="App Zip File" type="file" ref={fileRef} />
+    </Dialog>
+  )
+}