feat: backup/restore, user profile popover, image compress, video blur, wake lock

- backup/restore dialog + user profile popover components
- image compression, video blur, wake lock utilities
- message cache + conversation messages hook refinements
- call context, active speakers, screen share dialog tweaks
- audio + screen share settings persistence
- refreshed app icons (smaller sizes) across all platforms

packages/shared/src/chat/attachments.ts

@@ -39,6 +39,10 @@ export interface TextMessagePayload {
   type?: 'text';
   text: string;
   attachments: AttachmentHandle[];
+  /** When set, the message self-destructs `expireMs` milliseconds after the
+   *  server's createdAt. Sender initiates the delete; receivers hide locally
+   *  as soon as the window elapses. Added in /tempmsg support. */
+  expireMs?: number;
 }
 
 export interface CallEventPayload {
@@ -52,7 +56,12 @@ export interface CallEventPayload {
 export type MessagePayload = TextMessagePayload | CallEventPayload;
 
 export type ParsedMessagePayload =
-  | { kind: 'text'; text: string; attachments: AttachmentHandle[] }
+  | {
+      kind: 'text';
+      text: string;
+      attachments: AttachmentHandle[];
+      expireMs?: number;
+    }
   | {
       kind: 'call_event';
       status: CallEventStatus;
@@ -91,6 +100,9 @@ export function parseMessagePayload(raw: string | null): ParsedMessagePayload {
         kind: 'text',
         text: typeof t.text === 'string' ? t.text : '',
         attachments: Array.isArray(t.attachments) ? t.attachments : [],
+        ...(typeof t.expireMs === 'number' && t.expireMs > 0
+          ? { expireMs: t.expireMs }
+          : {}),
       };
     }
   } catch {