feat: BIP-39 master seed for unified key derivation

Replace fragmented random key generation with a single 24-word BIP-39
mnemonic that deterministically derives all node keys: Ed25519 (DID),
secp256k1 (Nostr/Bitcoin), BIP-84 xprv (Bitcoin Core), and LND aezeed
entropy. New onboarding flow: seed generate → word verification → identity
naming. Restore path enabled via 24-word entry. Includes seed RPC handlers,
mock backend support, LND/Bitcoin Core wallet-from-seed integration, and
UI polish across settings and discover views.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

neode-ui/src/views/settings/AccountInfoSection.vue

@@ -114,9 +114,9 @@ init()
   </div>
 
   <!-- Info Grid -->
-  <div data-controller-container tabindex="0" class="grid grid-cols-1 md:grid-cols-2 gap-4 mb-6">
-    <!-- Server Name Card (editable) -->
-    <div class="bg-black/20 rounded-xl px-5 py-4 border border-white/10">
+  <div class="grid grid-cols-1 md:grid-cols-2 gap-4 mb-6">
+    <!-- Server Name Card (editable) — container: Enter to edit, Enter to save, Escape to exit -->
+    <div data-controller-container tabindex="0" class="bg-black/20 rounded-xl px-5 py-4 border border-white/10 transition-all hover:-translate-y-1">
       <div class="flex items-center gap-3 mb-2">
         <svg class="w-5 h-5 text-white/70" fill="none" stroke="currentColor" viewBox="0 0 24 24">
           <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 12h14M5 12a2 2 0 01-2-2V6a2 2 0 012-2h14a2 2 0 012 2v4a2 2 0 01-2 2M5 12a2 2 0 00-2 2v4a2 2 0 002 2h14a2 2 0 002-2v-4a2 2 0 00-2-2m-2-4h.01M17 16h.01" />

neode-ui/src/views/settings/ClaudeAuthSection.vue

@@ -50,7 +50,7 @@ checkClaudeStatus()
   <div class="glass-card px-6 py-6 mb-6">
     <h2 class="text-xl font-semibold text-white/96 mb-2">{{ t('settings.claudeAuth') }}</h2>
     <p class="text-sm text-white/60 mb-6">{{ t('settings.claudeAuthDesc') }}</p>
-    <div class="bg-black/20 rounded-xl px-5 py-4 border border-white/10 mb-4">
+    <div class="bg-black/20 rounded-xl px-5 py-4 border border-white/10 mb-4" data-controller-ignore>
       <div class="flex items-center gap-3 mb-2">
         <svg class="w-5 h-5 shrink-0" :class="claudeConnected ? 'text-green-400' : 'text-white/40'" fill="none" stroke="currentColor" viewBox="0 0 24 24">
           <path v-if="claudeConnected" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z" />

neode-ui/src/views/settings/InterfaceModeSection.vue

@@ -42,7 +42,7 @@ async function changeLocale(code: string) {
   <div class="glass-card px-6 py-6 mb-6">
     <h2 class="text-xl font-semibold text-white/96 mb-2">{{ t('settings.interfaceMode') }}</h2>
     <p class="text-sm text-white/60 mb-6">{{ t('settings.interfaceModeDesc') }}</p>
-    <div class="grid grid-cols-1 md:grid-cols-3 gap-4">
+    <div data-controller-container tabindex="0" class="grid grid-cols-1 md:grid-cols-3 gap-4">
       <button
         v-for="m in interfaceModes"
         :key="m.id"

neode-ui/src/views/settings/SystemDangerZone.vue

@@ -48,7 +48,7 @@ async function performFactoryReset() {
 
 <template>
   <!-- Network Diagnostics Link -->
-  <div data-controller-container tabindex="0" class="glass-card px-6 py-6 mb-6">
+  <div class="glass-card px-6 py-6 mb-6">
     <div class="flex items-center justify-between">
       <div>
         <h2 class="text-xl font-semibold text-white/96">{{ t('common.network') }}</h2>
@@ -64,7 +64,7 @@ async function performFactoryReset() {
   </div>
 
   <!-- Reboot Section -->
-  <div data-controller-container tabindex="0" class="path-option-card px-6 py-6 mt-6">
+  <div class="path-option-card px-6 py-6 mt-6">
     <div class="flex items-center justify-between">
       <div>
         <h2 class="text-xl font-semibold text-white/90 mb-1">Reboot</h2>
@@ -109,7 +109,7 @@ async function performFactoryReset() {
   </Teleport>
 
   <!-- Factory Reset Section -->
-  <div data-controller-container tabindex="0" class="path-option-card px-6 py-6 mt-6 border-red-500/30">
+  <div class="path-option-card px-6 py-6 mt-6 border-red-500/30">
     <h2 class="text-xl font-semibold text-red-400/90 mb-3">Factory Reset</h2>
     <p class="text-sm text-white/60 mb-4">
       Wipe all user data, identities, and credentials. Container images are preserved. The node will restart and show the onboarding screen.

neode-ui/src/views/settings/TwoFactorSection.vue

@@ -128,7 +128,7 @@ loadTotpStatus()
 
 <template>
   <!-- Two-Factor Authentication -->
-  <div data-controller-container tabindex="0" class="mb-6">
+  <div class="mb-6">
     <div class="flex items-center justify-between mb-3">
       <div class="flex items-center gap-3">
         <svg class="w-5 h-5 text-white/70" fill="none" stroke="currentColor" viewBox="0 0 24 24">