feat(ui): peer requests confirm via modal with optional message

Request-to-Peer (Federation Discover modal + Web5 Node Visibility list)
no longer fires instantly: a BaseModal confirm shows the target, an
optional 280-char message (handshake.connect already carried it), and
Send/Cancel with the standard orange CTA.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

neode-ui/src/components/federation/PeerRequestModal.vue

@@ -0,0 +1,66 @@
+<template>
+  <BaseModal
+    :show="show"
+    title="Request to Peer"
+    max-width="max-w-md"
+    :z-index="'z-[3200]'"
+    @close="$emit('cancel')"
+  >
+    <p class="text-white/70 text-sm mb-1">
+      Send a connection request to
+      <span class="text-white font-medium">{{ targetLabel }}</span>
+    </p>
+    <p class="text-white/45 text-xs mb-4">
+      They'll see your request and approve or decline it. Approved peers connect
+      at the Peer level — never trusted automatically.
+    </p>
+
+    <label class="block text-xs text-white/60 mb-1">Message (optional)</label>
+    <textarea
+      v-model="message"
+      rows="3"
+      maxlength="280"
+      placeholder="Hey — mind if we peer?"
+      class="w-full rounded-lg bg-white/[0.06] border border-white/10 text-white px-3 py-2 text-sm focus:outline-none focus:border-orange-400/60 resize-none"
+    ></textarea>
+    <p class="text-[11px] text-white/30 text-right mt-1">{{ message.length }}/280</p>
+
+    <div class="flex gap-2 mt-4">
+      <button class="flex-1 glass-button px-4 py-2 rounded-lg text-sm" @click="$emit('cancel')">
+        Cancel
+      </button>
+      <button
+        class="flex-1 glass-button glass-button-warning px-4 py-2 rounded-lg text-sm font-medium disabled:opacity-50"
+        :disabled="sending"
+        @click="$emit('send', message.trim() || undefined)"
+      >
+        {{ sending ? 'Sending…' : 'Send Request' }}
+      </button>
+    </div>
+  </BaseModal>
+</template>
+
+<script setup lang="ts">
+import { ref, watch } from 'vue'
+import BaseModal from '@/components/BaseModal.vue'
+
+const props = defineProps<{
+  show: boolean
+  targetLabel: string
+  sending?: boolean
+}>()
+
+defineEmits<{
+  send: [message: string | undefined]
+  cancel: []
+}>()
+
+const message = ref('')
+
+watch(
+  () => props.show,
+  (visible) => {
+    if (visible) message.value = ''
+  },
+)
+</script>