feat: reply + search + forward + archive/mute + error boundary

Messages:
- Reply-to: hover action, composer chip with cancel, quote bubble inside
  the replying message with tap-to-jump + amber highlight ring
- Search: header search button toggles in-conversation search bar with
  prev/next + match counter, auto-jump to active match
- Forward: multi-select conversation picker. Attachments are now carried
  over: download + decrypt source, re-encrypt under each target conv-key,
  re-upload with fresh per-attachment keys, insert new attachment rows

Conversations:
- Archive + mute per member. New migration 20260420000001 adds `archived`
  + `muted_until` on conversation_members. Shared helpers:
  setConversationArchived / setConversationMutedUntil / isConversationMuted
- ChatsPage: archive toggle in header with unread badge for archived
  bucket, split active/archived lists, muted indicator (BellOff icon,
  dimmed unread badge)
- ConversationRowMenu via createPortal (escapes sidebar overflow clip),
  forwardRef-based MenuItem so submenu positioning refs survive React 18
- ConversationsContext: suppresses notification sound + OS notif when
  target conversation is muted
- Refresh on `profiles UPDATE` realtime so peer avatar / displayName
  changes flow to conversation.members without manual refresh

Resilience:
- ErrorBoundary (Discord-style): centred spinner + escalating copy, no
  manual reload button. Backoff retry schedule [2s, 4s, 8s, 15s, 30s].
  Uses a keyed Fragment (not a div wrapper) so flex h-full chains survive
- App wrapped root + per-route RouteBoundary, conversation-level boundary
- AuthContext: flip `ready` immediately on cached session read; validate
  getUser in background so a stalled/offline Supabase doesn't freeze the
  app on the loading spinner

Crypto:
- Swap libsodium-wrappers -> libsodium-wrappers-sumo (compact build was
  missing crypto_pwhash so Argon2id vault KDF threw, falling back to
  plaintext localStorage on every launch)
- Shim d.ts for sumo types (sumo is API superset, no official types ship)
- vite optimizeDeps includes sumo with the "require" condition
- secureFileStore: exists(dir) check before mkdir; surface genuine
  permission errors instead of silent catch

Tauri:
- fs scope adds `$APPLOCALDATA` direct entry (not just /**) so the app
  data directory itself can be mkdir'd on first launch

Chat layout:
- Skip call_event messages when computing avatar run boundaries so a
  regular bubble followed by a call event from the same sender still
  shows its avatar

apps/desktop/src/components/icons.tsx

@@ -409,6 +409,74 @@ export function SendIcon(props: IconProps) {
   );
 }
 
+export function ArchiveIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <rect x="3" y="4" width="18" height="5" rx="1" />
+      <path d="M5 9v10a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1V9" />
+      <path d="M10 13h4" />
+    </Base>
+  );
+}
+
+export function BellIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <path d="M6 8a6 6 0 1 1 12 0c0 4 1.5 5 2 6H4c.5-1 2-2 2-6Z" />
+      <path d="M9.5 18a2.5 2.5 0 0 0 5 0" />
+    </Base>
+  );
+}
+
+export function BellOffIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <path d="M9.5 18a2.5 2.5 0 0 0 5 0" />
+      <path d="M13.73 4A2 2 0 0 0 10 4" />
+      <path d="M18 8c0 1-.1 1.9-.2 2.7" />
+      <path d="M4 4 20 20" />
+      <path d="M6 8a6 6 0 0 1 .2-1.7" />
+      <path d="M4 18h13.5L18 17.4c.5-1 2-2 2-6" />
+    </Base>
+  );
+}
+
+export function MoreVerticalIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <circle cx="12" cy="5" r="1.5" />
+      <circle cx="12" cy="12" r="1.5" />
+      <circle cx="12" cy="19" r="1.5" />
+    </Base>
+  );
+}
+
+export function ReplyIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <polyline points="9 17 4 12 9 7" />
+      <path d="M20 18v-2a4 4 0 0 0-4-4H4" />
+    </Base>
+  );
+}
+
+export function ForwardIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <polyline points="15 17 20 12 15 7" />
+      <path d="M4 18v-2a4 4 0 0 1 4-4h12" />
+    </Base>
+  );
+}
+
+export function ChevronUpIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <polyline points="18 15 12 9 6 15" />
+    </Base>
+  );
+}
+
 export function AddUserIcon(props: IconProps) {
   return (
     <Base {...props}>