Duplicate identity: user override with Continue Anyway button

When anchor reports duplicate identity, sync pauses and a red banner
shows with a "Continue Anyway" button. Clicking it clears the flag and
starts all sync tasks. Handles false positives from network changes
(WiFi/cellular/VPN switches) without requiring complex staleness checks.

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

crates/tauri-app/src/lib.rs

@@ -2497,6 +2497,34 @@ async fn export_data(
         paths.join(", ")))
 }
 
+/// Clear the duplicate identity flag and start sync tasks that were skipped.
+#[tauri::command]
+async fn clear_duplicate_flag(state: State<'_, AppNode>) -> Result<(), String> {
+    let node = get_node(&state).await;
+    node.network.duplicate_detected.store(false, std::sync::atomic::Ordering::Relaxed);
+    // Start the sync tasks that were skipped during bootstrap
+    node.start_accept_loop();
+    node.start_pull_cycle(300);
+    node.start_diff_cycle(120);
+    node.start_rebalance_cycle(600);
+    node.start_growth_loop();
+    node.start_recovery_loop();
+    node.start_social_checkin_cycle(3600);
+    node.start_anchor_register_cycle(600);
+    node.start_upnp_renewal_cycle();
+    node.start_upnp_tcp_renewal_cycle();
+    node.start_http_server();
+    node.start_bootstrap_connectivity_check();
+    node.start_replication_cycle(600);
+    let cache_max_bytes: u64 = {
+        let storage = node.storage.get().await;
+        storage.get_setting("cache_size_bytes").ok().flatten()
+            .and_then(|s| s.parse().ok()).unwrap_or(1_073_741_824u64)
+    };
+    Node::start_eviction_cycle(Arc::clone(&node), 300, cache_max_bytes);
+    Ok(())
+}
+
 /// On Android: save a file from the app's internal storage to a user-chosen location via SAF.
 /// On desktop: no-op (files are already in ~/Downloads).
 #[tauri::command]
@@ -2803,6 +2831,7 @@ pub fn run() {
             get_active_identity,
             export_data,
             share_file,
+            clear_duplicate_flag,
             import_summary,
             import_public_posts,
             import_as_new_identity,