Add nip 01 login flow to mobile

src/app/components/SignUpKeyConfirm.svelte

@@ -0,0 +1,66 @@
+<script lang="ts">
+  import {preventDefault, copyToClipboard} from "@lib/html"
+  import Icon from "@lib/components/Icon.svelte"
+  import Field from "@lib/components/Field.svelte"
+  import Button from "@lib/components/Button.svelte"
+  import ModalHeader from "@lib/components/ModalHeader.svelte"
+  import ModalFooter from "@lib/components/ModalFooter.svelte"
+  import SignUpProfile from "@app/components/SignUpProfile.svelte"
+  import {pushToast} from "@app/toast"
+  import {pushModal} from "@app/modal"
+
+  type Props = {
+    secret: string
+    pubkey: string
+    ncryptsec: string
+  }
+
+  const {secret, pubkey, ncryptsec}: Props = $props()
+
+  const back = () => history.back()
+
+  const copy = () => {
+    copyToClipboard(ncryptsec)
+    pushToast({message: "Your secret key has been copied to your clipboard!"})
+  }
+
+  const next = () => {
+    pushModal(SignUpProfile, {secret, pubkey})
+  }
+</script>
+
+<form class="column gap-4" onsubmit={preventDefault(next)}>
+  <ModalHeader>
+    {#snippet title()}
+      <div>Download your key</div>
+    {/snippet}
+  </ModalHeader>
+  <p>
+    Great! We've encrypted your secret key and saved it to your device. If that didn't work, or if
+    you'd rather save your key somewhere else, you can find the encrypted version below:
+  </p>
+  <Field>
+    {#snippet label()}
+      Encrypted Secret Key
+    {/snippet}
+    {#snippet input()}
+      <label class="input input-bordered flex w-full items-center gap-2">
+        <Icon icon="key" />
+        <input value={ncryptsec} class="ellipsize grow" />
+        <Button onclick={copy} class="flex items-center">
+          <Icon icon="copy" />
+        </Button>
+      </label>
+    {/snippet}
+  </Field>
+  <ModalFooter>
+    <Button class="btn btn-link" onclick={back}>
+      <Icon icon="alt-arrow-left" />
+      Go back
+    </Button>
+    <Button class="btn btn-primary" type="submit">
+      Fill out your profile
+      <Icon icon="alt-arrow-right" />
+    </Button>
+  </ModalFooter>
+</form>