feat(ui): lightning channels All/Active/Pending/Closed tabs + closed-channel history

Consumes the lnd.closedchannels RPC and closing/force_closing statuses
that shipped backend-side in 00b7e179 but never reached the panel:
- tab bar with per-state counts; pending covers pending_open/closing/force_closing
- closed-channel cards with close type, settled balance, block height and
  closing-tx explorer link
- closing/force_closing status dots + closing-tx link on in-flight closes
- Close button hidden for channels already mid-close

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

neode-ui/mock-backend.js

@@ -3453,12 +3453,26 @@ app.post('/rpc/v1', (req, res) => {
           { chan_id: '840921088114689', remote_pubkey: '03abcdef12345678901234567890123456789012345678901234567890abcdef12', capacity: 2000000, local_balance: 1200000, remote_balance: 800000, active: true, status: 'active', channel_point: randomHex(32) + ':1', peer_alias: 'WalletOfSatoshi' },
           { chan_id: '840921088114690', remote_pubkey: '02fedcba98765432109876543210987654321098765432109876543210fedcba98', capacity: 10000000, local_balance: 4500000, remote_balance: 5500000, active: true, status: 'active', channel_point: randomHex(32) + ':0', peer_alias: 'Voltage' },
           { chan_id: '840921088114691', remote_pubkey: '03456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123', capacity: 3000000, local_balance: 100000, remote_balance: 2900000, active: false, status: 'inactive', channel_point: randomHex(32) + ':0', peer_alias: 'Kraken' },
+          { chan_id: '', remote_pubkey: '028d98b9969fbed53784a36617eb489a59ab6dc9b9d77fcdca9ff55307cd98e3c4', capacity: 500000, local_balance: 500000, remote_balance: 0, active: false, status: 'pending_open', channel_point: randomHex(32) + ':0', peer_alias: 'ACINQ' },
+          { chan_id: '', remote_pubkey: '02c16cca44562b590dd279c942200bdccfd4f990c3a69fad620c10ef2f8228eaff', capacity: 800000, local_balance: 350000, remote_balance: 450000, active: false, status: 'closing', channel_point: randomHex(32) + ':0', closing_txid: randomHex(32), peer_alias: 'Bitrefill' },
         ]
         return res.json({
           result: {
             channels,
-            total_outbound: channels.reduce((s, c) => s + c.local_balance, 0),
-            total_inbound: channels.reduce((s, c) => s + c.remote_balance, 0),
+            // Totals sum open channels only, matching the real backend.
+            total_outbound: channels.filter(c => ['active', 'inactive'].includes(c.status)).reduce((s, c) => s + c.local_balance, 0),
+            total_inbound: channels.filter(c => ['active', 'inactive'].includes(c.status)).reduce((s, c) => s + c.remote_balance, 0),
+          },
+        })
+      }
+
+      case 'lnd.closedchannels': {
+        return res.json({
+          result: {
+            channels: [
+              { chan_id: '840921088110001', remote_pubkey: '03864ef025fde8fb587d989186ce6a4a186895ee44a926bfc370e2c366597a3f8f', capacity: 1000000, settled_balance: 612000, close_type: 'COOPERATIVE_CLOSE', closing_tx_hash: randomHex(32), channel_point: randomHex(32) + ':0', close_height: 903112 },
+              { chan_id: '840921088110002', remote_pubkey: '0298f6074a454a1f5345cb2a7c6f9fce206cd0bf675d177cdbf0ca7508dd28852f', capacity: 250000, settled_balance: 0, close_type: 'REMOTE_FORCE_CLOSE', closing_tx_hash: randomHex(32), channel_point: randomHex(32) + ':1', close_height: 897540 },
+            ],
           },
         })
       }

neode-ui/src/components/LightningChannelsPanel.vue

@@ -75,7 +75,7 @@
     </div>
 
     <!-- No Channels -->
-    <div v-else-if="channels.length === 0" key="empty" class="glass-card p-8 text-center">
+    <div v-else-if="channels.length === 0 && closedChannels.length === 0" key="empty" class="glass-card p-8 text-center">
       <svg class="w-16 h-16 text-white/20 mx-auto mb-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
         <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 10V3L4 14h7v7l9-11h-7z" />
       </svg>
@@ -85,6 +85,23 @@
 
     <!-- Channel List -->
     <div v-else key="channels" class="space-y-3">
+      <!-- Status tabs -->
+      <div class="flex gap-1 p-1 bg-white/5 rounded-lg">
+        <button
+          v-for="tab in tabs"
+          :key="tab.key"
+          @click="activeTab = tab.key"
+          class="flex-1 px-2 py-1.5 rounded text-xs font-medium transition-colors flex items-center justify-center gap-1.5"
+          :class="activeTab === tab.key ? 'bg-white/15 text-white' : 'text-white/50 hover:text-white/80'"
+        >
+          {{ tab.label }}
+          <span
+            class="px-1.5 py-0.5 rounded-full text-[10px] leading-none"
+            :class="activeTab === tab.key ? 'bg-white/15 text-white/80' : 'bg-white/10 text-white/40'"
+          >{{ tab.count }}</span>
+        </button>
+      </div>
+
       <div v-if="loading" class="p-2 text-center text-white/45 text-xs flex items-center justify-center gap-2">
         <svg class="animate-spin h-3.5 w-3.5" fill="none" viewBox="0 0 24 24">
           <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
@@ -96,7 +113,7 @@
         {{ error }}
       </div>
       <div
-        v-for="ch in channels"
+        v-for="ch in filteredChannels"
         :key="ch.chan_id || ch.channel_point"
         class="glass-card p-4"
         :class="{ 'bg-white/5': compact }"
@@ -109,12 +126,14 @@
                 'bg-green-400': channelStatus(ch) === 'active',
                 'bg-yellow-400': channelStatus(ch) === 'pending_open',
                 'bg-red-400': channelStatus(ch) === 'inactive',
+                'bg-orange-400': channelStatus(ch) === 'closing',
+                'bg-purple-400': channelStatus(ch) === 'force_closing',
               }"
             ></span>
             <span class="text-white/80 text-sm font-medium capitalize">{{ channelStatus(ch).replace('_', ' ') }}</span>
           </div>
           <button
-            v-if="channelStatus(ch) !== 'pending_open'"
+            v-if="!['pending_open', 'closing', 'force_closing'].includes(channelStatus(ch))"
             @click="confirmClose(ch)"
             class="text-red-400/70 hover:text-red-400 text-xs transition-colors"
           >
@@ -148,9 +167,10 @@
           </p>
         </div>
 
-        <!-- Funding tx -->
-        <div v-if="fundingTxid(ch)" class="flex justify-end">
+        <!-- Funding / closing tx -->
+        <div v-if="fundingTxid(ch) || ch.closing_txid" class="flex justify-end gap-3">
           <button
+            v-if="fundingTxid(ch)"
             @click="openInMempool(fundingTxid(ch))"
             class="flex items-center gap-1 text-blue-400/70 hover:text-blue-400 text-xs transition-colors"
             :title="fundingTxid(ch)"
@@ -160,8 +180,66 @@
               <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10 6H6a2 2 0 00-2 2v10a2 2 0 002 2h10a2 2 0 002-2v-4M14 4h6m0 0v6m0-6L10 14" />
             </svg>
           </button>
+          <button
+            v-if="ch.closing_txid"
+            @click="openInMempool(ch.closing_txid!)"
+            class="flex items-center gap-1 text-orange-400/70 hover:text-orange-400 text-xs transition-colors"
+            :title="ch.closing_txid"
+          >
+            Closing tx in Mempool
+            <svg class="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10 6H6a2 2 0 00-2 2v10a2 2 0 002 2h10a2 2 0 002-2v-4M14 4h6m0 0v6m0-6L10 14" />
+            </svg>
+          </button>
         </div>
       </div>
+
+      <!-- Closed channel history (All + Closed tabs) -->
+      <div
+        v-for="ch in filteredClosed"
+        :key="'closed-' + (ch.chan_id || ch.channel_point || ch.closing_tx_hash)"
+        class="glass-card p-4 opacity-75"
+        :class="{ 'bg-white/5': compact }"
+      >
+        <div class="flex items-center justify-between mb-3">
+          <div class="flex items-center gap-2">
+            <span class="w-2 h-2 rounded-full bg-white/30"></span>
+            <span class="text-white/60 text-sm font-medium">Closed</span>
+            <span v-if="closeTypeLabel(ch)" class="text-white/40 text-xs">· {{ closeTypeLabel(ch) }}</span>
+          </div>
+          <span v-if="ch.close_height" class="text-white/35 text-xs">Block {{ ch.close_height.toLocaleString() }}</span>
+        </div>
+
+        <p class="text-white/40 text-xs font-mono mb-3 truncate" :title="ch.remote_pubkey">
+          {{ ch.remote_pubkey }}
+        </p>
+
+        <div class="flex justify-between text-xs text-white/50 mb-2">
+          <span>Settled: {{ formatSats(ch.settled_balance) }}</span>
+          <span>Capacity: {{ formatSats(ch.capacity) }}</span>
+        </div>
+
+        <div v-if="ch.closing_tx_hash" class="flex justify-end">
+          <button
+            @click="openInMempool(ch.closing_tx_hash)"
+            class="flex items-center gap-1 text-blue-400/70 hover:text-blue-400 text-xs transition-colors"
+            :title="ch.closing_tx_hash"
+          >
+            Closing tx in Mempool
+            <svg class="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10 6H6a2 2 0 00-2 2v10a2 2 0 002 2h10a2 2 0 002-2v-4M14 4h6m0 0v6m0-6L10 14" />
+            </svg>
+          </button>
+        </div>
+      </div>
+
+      <!-- Per-tab empty state -->
+      <div
+        v-if="filteredChannels.length === 0 && filteredClosed.length === 0"
+        class="glass-card p-6 text-center"
+      >
+        <p class="text-white/50 text-sm">{{ emptyTabMessage }}</p>
+      </div>
     </div>
     </Transition>
 
@@ -299,7 +377,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted } from 'vue'
+import { ref, computed, onMounted } from 'vue'
 import { rpcClient } from '@/api/rpc-client'
 import { useTxExplorer } from '@/composables/useTxExplorer'
 
@@ -314,6 +392,18 @@ interface Channel {
   active: boolean
   status?: string
   channel_point?: string
+  closing_txid?: string
+}
+
+interface ClosedChannel {
+  chan_id?: string
+  remote_pubkey: string
+  capacity: number
+  settled_balance: number
+  close_type?: string
+  closing_tx_hash?: string
+  channel_point?: string
+  close_height?: number
 }
 
 /** Status with a fallback derived from `active` for backends that omit it */
@@ -321,6 +411,48 @@ function channelStatus(ch: Channel): string {
   return ch.status ?? (ch.active ? 'active' : 'inactive')
 }
 
+type ChannelTab = 'all' | 'active' | 'pending' | 'closed'
+const activeTab = ref<ChannelTab>('all')
+
+/** pending_open, closing and force_closing all live on the Pending tab */
+function isPendingState(ch: Channel): boolean {
+  return ['pending_open', 'closing', 'force_closing'].includes(channelStatus(ch))
+}
+
+const tabs = computed((): { key: ChannelTab; label: string; count: number }[] => [
+  { key: 'all', label: 'All', count: channels.value.length + closedChannels.value.length },
+  { key: 'active', label: 'Active', count: channels.value.filter(ch => !isPendingState(ch)).length },
+  { key: 'pending', label: 'Pending', count: channels.value.filter(isPendingState).length },
+  { key: 'closed', label: 'Closed', count: closedChannels.value.length },
+])
+
+const filteredChannels = computed((): Channel[] => {
+  switch (activeTab.value) {
+    case 'closed': return []
+    case 'active': return channels.value.filter(ch => !isPendingState(ch))
+    case 'pending': return channels.value.filter(isPendingState)
+    default: return channels.value
+  }
+})
+
+const filteredClosed = computed((): ClosedChannel[] =>
+  activeTab.value === 'all' || activeTab.value === 'closed' ? closedChannels.value : []
+)
+
+const emptyTabMessage = computed((): string => {
+  switch (activeTab.value) {
+    case 'active': return 'No open channels.'
+    case 'pending': return 'No pending or closing channels.'
+    case 'closed': return 'No closed channels yet.'
+    default: return 'No channels yet.'
+  }
+})
+
+/** "COOPERATIVE_CLOSE" / "cooperative_close" → "cooperative close" */
+function closeTypeLabel(ch: ClosedChannel): string {
+  return (ch.close_type || '').toLowerCase().replace(/_/g, ' ')
+}
+
 type FeePreset = 'standard' | 'medium' | 'fast' | 'custom'
 
 const feePresets: { key: FeePreset; label: string; hint?: string; confTarget?: number }[] = [
@@ -333,6 +465,7 @@ const feePresets: { key: FeePreset; label: string; hint?: string; confTarget?: n
 const loading = ref(true)
 const error = ref<string | null>(null)
 const channels = ref<Channel[]>([])
+const closedChannels = ref<ClosedChannel[]>([])
 const summary = ref({ total_inbound: 0, total_outbound: 0 })
 
 // Olympus by ZEUS — the LSP node behind the Zeus mobile wallet.
@@ -419,6 +552,17 @@ async function loadChannels() {
       total_inbound: result.total_inbound || 0,
       total_outbound: result.total_outbound || 0,
     }
+    // Closed history is a separate RPC — a failure here keeps the previous
+    // list rather than blanking the main channel view.
+    try {
+      const closed = await rpcClient.call<{ channels: ClosedChannel[] }>({
+        method: 'lnd.closedchannels',
+        timeout: 15000,
+      })
+      closedChannels.value = closed.channels || []
+    } catch {
+      /* keep previous closed list */
+    }
   } catch (err: unknown) {
     error.value = err instanceof Error ? err.message : 'Failed to load channels'
     if (!hadChannels) channels.value = []