fix(wallet): gate lightning on node STATE, gate send too, add a shared CopyButton

Three defects from testing the previous commit on archi-dev-box:

1. The gate keyed on `id in packages`, which is not "installed and usable" —
   package-data carries an entry for a Lightning app that is known but not
   running. On a box with no lnd container at all the gate passed and the raw
   error came through as "Operation failed. Check server logs for details."
   Now keyed on PackageState.Running.

2. Because installed-but-stopped is a real and different situation, the modal
   has two modes: absent offers the install choices, stopped says the node
   isn't running and offers "Open My Apps". Neither dead-ends in an error.

3. Lightning SEND let you walk all the way to confirm-send with no node. The
   gate now runs in review(), before the confirm step — failing at submit
   after a review screen is the defect, not a smaller version of it.

Also adds CopyButton, the start of one consistent copy affordance: icon +
label, an emerald tick held 1.6s, a fixed box so the width never jumps, and a
document.execCommand fallback so copy still works over plain http on a LAN IP
(navigator.clipboard rejects on insecure origins, which is how a lot of nodes
are reached). Converted the wallet's own copies — the lightning invoice the
user reported, plus the on-chain/Ark addresses and the payment hash/txid.

20 of 25 copy sites across 15 other files still use ad-hoc markup; converting
them is mechanical but was not attempted here rather than half-done.

Verified: 5 gate tests; npm run build clean.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

neode-ui/src/components/ReceiveBitcoinModal.vue

@@ -25,7 +25,7 @@
             <canvas ref="lightningQrCanvas" class="mx-auto mb-3 rounded-lg" style="image-rendering: pixelated;"></canvas>
             <p class="text-white/50 text-xs mb-1">{{ t('receiveBitcoin.invoiceShareLabel') }}</p>
             <p class="text-xs font-mono text-white/80 break-all">{{ invoiceResult }}</p>
-            <button @click="copyText(invoiceResult)" class="mt-2 text-xs text-orange-400 hover:text-orange-300">{{ t('common.copy') }}</button>
+            <CopyButton :value="invoiceResult" :label="t('common.copy')" class="mt-2" />
           </div>
         </div>
 
@@ -38,7 +38,7 @@
             <canvas ref="onchainQrCanvas" class="mx-auto mb-3 rounded-lg" style="image-rendering: pixelated;"></canvas>
             <p class="text-white/50 text-xs mb-2">{{ t('receiveBitcoin.yourBitcoinAddress') }}</p>
             <p class="text-sm font-mono text-white/90 break-all">{{ onchainAddress }}</p>
-            <button @click="copyText(onchainAddress)" class="mt-2 text-xs text-orange-400 hover:text-orange-300">{{ t('common.copy') }}</button>
+            <CopyButton :value="onchainAddress" :label="t('common.copy')" class="mt-2" />
           </div>
           <div v-else class="mb-3 text-center">
             <p class="text-white/50 text-sm mb-2">{{ t('web5.generateFreshAddress') }}</p>
@@ -52,7 +52,7 @@
             <canvas ref="arkQrCanvas" class="mx-auto mb-3 rounded-lg" style="image-rendering: pixelated;"></canvas>
             <p class="text-white/50 text-xs mb-2">Your Ark address</p>
             <p class="text-sm font-mono text-white/90 break-all">{{ arkAddress }}</p>
-            <button @click="copyText(arkAddress)" class="mt-2 text-xs text-orange-400 hover:text-orange-300">{{ t('common.copy') }}</button>
+            <CopyButton :value="arkAddress" :label="t('common.copy')" class="mt-2" />
           </div>
           <div v-else class="mb-3 text-center">
             <p class="text-white/50 text-sm mb-2">Generate a fresh Ark address to receive off-chain sats instantly.</p>
@@ -90,6 +90,7 @@ import { ref, nextTick, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { rpcClient } from '@/api/rpc-client'
 import BaseModal from '@/components/BaseModal.vue'
+import CopyButton from '@/components/CopyButton.vue'
 import { explainReceiveAddressFailure } from '@/utils/bitcoinReceive'
 import { useLightningRequired } from '@/composables/useLightningRequired'
 
@@ -147,10 +148,6 @@ function close() {
   emit('close')
 }
 
-function copyText(text: string) {
-  navigator.clipboard.writeText(text).catch(() => {})
-}
-
 async function receive() {
   processing.value = true
   error.value = ''