Merge pull request #29 from sudosylabs/feat/win32-screenshots

fix(desktop): use native Windows file and folder dialogs

apple/Tests/ProgressDerivationTests.swift

@@ -44,6 +44,24 @@ final class ProgressDerivationTests: XCTestCase {
 		XCTAssertEqual(progress?.progress, 0.3)
 	}
 
+	func testReceiverCompletionAfterProgressIsTerminal() {
+		let events = [
+			receiverEvent(kind: "completed", json: "{\"connection_id\":1,\"request_id\":1,\"endpoint_id\":\"peer-a\"}"),
+			receiverEvent(kind: "progress", json: "{\"connection_id\":1,\"request_id\":1,\"endpoint_id\":\"peer-a\",\"end_offset\":100}"),
+			receiverEvent(kind: "started", json: "{\"connection_id\":1,\"request_id\":1,\"endpoint_id\":\"peer-a\",\"size\":100}"),
+		]
+
+		let progress = progressForReceiver(
+			events: events,
+			transferId: 1,
+			remoteEndpointId: "peer-a",
+			totalSizeHint: 100
+		)
+		XCTAssertEqual(progress?.kind, "completed")
+		XCTAssertEqual(progress?.labelKey, "progress_completed")
+		XCTAssertEqual(progress?.progress, 1)
+	}
+
 	func testStatusLabelKeys() {
 		XCTAssertEqual(statusLabelKey(.sharing), "status_available")
 		XCTAssertEqual(statusLabelKey(.receiving), "status_receiving")
@@ -56,4 +74,8 @@ final class ProgressDerivationTests: XCTestCase {
 			direction: "send", phase: phase, kind: kind, dataJson: json
 		)
 	}
+
+	private func receiverEvent(kind: String, json: String) -> CoreEventModel {
+		event(phase: "transfer", kind: kind, json: json)
+	}
 }

apple/VniDrop/Core/CoreRepository.swift

@@ -197,7 +197,7 @@ final class CoreRepository: ObservableObject, CoreGateway {
 
 		guard let transferId = model.transferId else { return }
 		switch model.phase {
-		case "approval": signalsSubject.send(.approvalChanged(transferId: transferId))
+		case "approval", "access": signalsSubject.send(.approvalChanged(transferId: transferId))
 		case "delivery": signalsSubject.send(.receiverHistoryChanged(transferId: transferId))
 		default: break
 		}

apple/VniDrop/Core/TransferProgress.swift

@@ -96,14 +96,14 @@ func progressForReceiver(
 			labelKey: "progress_interrupted", progress: nil, detail: nil
 		)
 	}
-	if latest.kind == "completed" && !transferEvents.contains(where: { $0.kind == "progress" || $0.kind == "started" }) {
+	let progress = aggregateReceiverProgress(events: transferEvents, totalSizeHint: totalSizeHint)
+	if latest.kind == "completed" && (progress.map { $0 >= 0.999 } ?? true) {
 		return TransferProgress(
 			transferId: transferId, phase: "transfer", kind: "completed",
 			labelKey: "progress_completed", progress: 1, detail: nil
 		)
 	}
 
-	let progress = aggregateReceiverProgress(events: transferEvents, totalSizeHint: totalSizeHint)
 	return TransferProgress(
 		transferId: transferId, phase: "transfer", kind: latest.kind,
 		labelKey: "progress_sending", progress: progress, detail: progressDetail(latest)

apple/VniDrop/Features/Send/SendScreen.swift

@@ -127,11 +127,14 @@ struct SendScreen: View {
 	private func sharingProgress(for transfer: Transfer) -> TransferProgress? {
 		let active = (model.receiversByTransfer[transfer.transferId] ?? []).filter { $0.status == .accepted }
 		if active.isEmpty { return nil }
-		let fractions = active.compactMap {
-			progressForReceiver(events: model.coreState.events, transferId: transfer.transferId,
-								 remoteEndpointId: $0.remoteEndpointId, totalSizeHint: transfer.totalSize)?.progress
+		let fractions: [Double] = active.compactMap { receiver -> Double? in
+			let progress = progressForReceiver(events: model.coreState.events, transferId: transfer.transferId,
+									remoteEndpointId: receiver.remoteEndpointId, totalSizeHint: transfer.totalSize)
+			guard progress?.kind == "started" || progress?.kind == "progress" else { return nil }
+			return progress?.progress
 		}
-		let combined = fractions.isEmpty ? nil : fractions.reduce(0, +) / Double(fractions.count)
+		guard !fractions.isEmpty else { return nil }
+		let combined = fractions.reduce(0, +) / Double(fractions.count)
 		if active.count == 1 {
 			return TransferProgress(transferId: transfer.transferId, phase: "transfer", kind: "progress",
 									labelKey: "progress_sending", progress: combined)

artifacts/microsoft-store/captions.md

@@ -0,0 +1,9 @@
+# Microsoft Store screenshot order and captions
+
+1. **Review transfer** — Choose a file, name the transfer, and decide whether every receiver needs your approval.
+2. **Share with QR** — Invite another device with a QR code or a portable `.vnd` invitation file.
+3. **Transfer details** — See availability, size, access policy, receiver activity, and sharing options in one place.
+4. **Receive invitation** — Open a private VniDrop invitation to receive files directly on your PC.
+5. **Privacy and security** — Direct, account-free, end-to-end encrypted transfer with no cloud copy left behind.
+
+All final screenshots are 1920 × 1080 PNG files. The QR shown in screenshot 2 is a deliberately non-functional demo pattern; it does not contain a live transfer capability.

crates/vnidrop/src/repository.rs

@@ -20,7 +20,7 @@ use crate::{
     util::now_ms,
 };
 
-const SCHEMA_VERSION: i64 = 5;
+const SCHEMA_VERSION: i64 = 6;
 
 #[derive(Debug, Clone)]
 pub(crate) struct Repository {
@@ -78,6 +78,23 @@ pub(crate) struct ReceiverRequestInsert<'a> {
     pub(crate) app_version: &'a str,
 }
 
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub(crate) struct PendingDeliveryReceipt {
+    pub(crate) local_transfer_id: u64,
+    pub(crate) sender_blob_ticket: String,
+    pub(crate) request_id: String,
+    pub(crate) sender_transfer_id: u64,
+    pub(crate) token: String,
+}
+
+pub(crate) struct PendingDeliveryReceiptInsert<'a> {
+    pub(crate) local_transfer_id: u64,
+    pub(crate) sender_blob_ticket: &'a str,
+    pub(crate) request_id: &'a str,
+    pub(crate) sender_transfer_id: u64,
+    pub(crate) token: &'a str,
+}
+
 impl Repository {
     pub(crate) async fn open(app_data_dir: &Path) -> Result<Self> {
         let db_path = app_data_dir.join("vnidrop.sqlite3");
@@ -268,6 +285,21 @@ impl Repository {
         .execute(&self.pool)
         .await?;
 
+        sqlx::query(
+            r#"
+            CREATE TABLE IF NOT EXISTS pending_delivery_receipts (
+                request_id TEXT PRIMARY KEY,
+                local_transfer_id INTEGER NOT NULL,
+                sender_blob_ticket TEXT NOT NULL,
+                sender_transfer_id INTEGER NOT NULL,
+                token TEXT NOT NULL,
+                created_at INTEGER NOT NULL
+            );
+            "#,
+        )
+        .execute(&self.pool)
+        .await?;
+
         sqlx::query(&format!("PRAGMA user_version = {SCHEMA_VERSION}"))
             .execute(&self.pool)
             .await?;
@@ -506,6 +538,82 @@ impl Repository {
         Ok(())
     }
 
+    pub(crate) async fn complete_receive_with_pending_receipt(
+        &self,
+        receipt: PendingDeliveryReceiptInsert<'_>,
+    ) -> Result<()> {
+        self.maybe_fail_write()?;
+        let mut transaction = self.pool.begin().await?;
+        let updated = sqlx::query(
+            r#"
+            UPDATE transfers
+            SET status = 'done', updated_at = ?1
+            WHERE transfer_id = ?2 AND direction = 'receive' AND status = 'receiving'
+            "#,
+        )
+        .bind(now_ms())
+        .bind(to_db_id(receipt.local_transfer_id)?)
+        .execute(&mut *transaction)
+        .await?;
+        require_one_changed(updated.rows_affected(), "complete receive")?;
+        sqlx::query(
+            r#"
+            INSERT INTO pending_delivery_receipts (
+                request_id, local_transfer_id, sender_blob_ticket,
+                sender_transfer_id, token, created_at
+            ) VALUES (?1, ?2, ?3, ?4, ?5, ?6)
+            ON CONFLICT(request_id) DO UPDATE SET
+                local_transfer_id = excluded.local_transfer_id,
+                sender_blob_ticket = excluded.sender_blob_ticket,
+                sender_transfer_id = excluded.sender_transfer_id,
+                token = excluded.token
+            "#,
+        )
+        .bind(receipt.request_id)
+        .bind(to_db_id(receipt.local_transfer_id)?)
+        .bind(receipt.sender_blob_ticket)
+        .bind(to_db_id(receipt.sender_transfer_id)?)
+        .bind(receipt.token)
+        .bind(now_ms())
+        .execute(&mut *transaction)
+        .await?;
+        transaction.commit().await?;
+        Ok(())
+    }
+
+    pub(crate) async fn list_pending_delivery_receipts(
+        &self,
+    ) -> Result<Vec<PendingDeliveryReceipt>> {
+        let rows = sqlx::query(
+            r#"
+            SELECT local_transfer_id, sender_blob_ticket, request_id,
+                   sender_transfer_id, token
+            FROM pending_delivery_receipts
+            ORDER BY created_at ASC
+            "#,
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        Ok(rows
+            .into_iter()
+            .map(|row| PendingDeliveryReceipt {
+                local_transfer_id: row.get::<i64, _>("local_transfer_id") as u64,
+                sender_blob_ticket: row.get("sender_blob_ticket"),
+                request_id: row.get("request_id"),
+                sender_transfer_id: row.get::<i64, _>("sender_transfer_id") as u64,
+                token: row.get("token"),
+            })
+            .collect())
+    }
+
+    pub(crate) async fn delete_pending_delivery_receipt(&self, request_id: &str) -> Result<()> {
+        sqlx::query("DELETE FROM pending_delivery_receipts WHERE request_id = ?1")
+            .bind(request_id)
+            .execute(&self.pool)
+            .await?;
+        Ok(())
+    }
+
     pub(crate) async fn update_active_share_access_mode(
         &self,
         transfer_id: u64,

crates/vnidrop/src/runtime/delivery.rs

@@ -0,0 +1,135 @@
+use std::{str::FromStr, sync::Arc, time::Duration};
+
+use iroh_blobs::ticket::BlobTicket;
+use serde_json::json;
+
+use super::CoreInner;
+use crate::{
+    handshake::{DeliveryReceipt, DeliveryReceiptResponse, HandshakeService},
+    repository::PendingDeliveryReceipt,
+};
+
+const DELIVERY_RECEIPT_TIMEOUT: Duration = Duration::from_secs(5);
+const DELIVERY_RECEIPT_RETRY_INTERVAL: Duration = Duration::from_secs(5);
+const DELIVERY_RECEIPT_MAX_RETRY_INTERVAL: Duration = Duration::from_secs(5 * 60);
+
+impl CoreInner {
+    pub(super) async fn spawn_delivery_receipt_task(self: &Arc<Self>) {
+        let core = Arc::downgrade(self);
+        let task = tokio::spawn(async move {
+            let mut retry_interval = DELIVERY_RECEIPT_RETRY_INTERVAL;
+            loop {
+                let Some(core) = core.upgrade() else {
+                    break;
+                };
+                let has_pending = core.deliver_pending_receipts().await;
+                if has_pending {
+                    let notified = tokio::select! {
+                        () = core.delivery_receipt_notify.notified() => true,
+                        () = tokio::time::sleep(retry_interval) => false,
+                    };
+                    if notified {
+                        retry_interval = DELIVERY_RECEIPT_RETRY_INTERVAL;
+                    } else {
+                        retry_interval = retry_interval
+                            .saturating_mul(2)
+                            .min(DELIVERY_RECEIPT_MAX_RETRY_INTERVAL);
+                    }
+                } else {
+                    core.delivery_receipt_notify.notified().await;
+                    retry_interval = DELIVERY_RECEIPT_RETRY_INTERVAL;
+                }
+            }
+        });
+        *self.delivery_receipt_task.lock().await = Some(task);
+    }
+
+    async fn deliver_pending_receipts(&self) -> bool {
+        let receipts = match self.repository.list_pending_delivery_receipts().await {
+            Ok(receipts) => receipts,
+            Err(error) => {
+                tracing::warn!(%error, "failed to load pending delivery receipts");
+                return true;
+            }
+        };
+        let has_pending = !receipts.is_empty();
+        for receipt in receipts {
+            self.deliver_pending_receipt(receipt).await;
+        }
+        has_pending
+    }
+
+    async fn deliver_pending_receipt(&self, pending: PendingDeliveryReceipt) {
+        let blob_ticket = match BlobTicket::from_str(&pending.sender_blob_ticket) {
+            Ok(ticket) => ticket,
+            Err(error) => {
+                tracing::warn!(%error, request_id = %pending.request_id, "discarded invalid pending delivery receipt");
+                let _ = self
+                    .repository
+                    .delete_pending_delivery_receipt(&pending.request_id)
+                    .await;
+                self.emit_transfer(
+                    pending.local_transfer_id,
+                    "receive",
+                    "delivery",
+                    "receipt-rejected",
+                    json!({ "reason": "invalid-sender-ticket" }),
+                );
+                return;
+            }
+        };
+        let client = HandshakeService::client(self.endpoint.clone(), blob_ticket.addr().clone());
+        let receipt = DeliveryReceipt {
+            request_id: pending.request_id.clone(),
+            transfer_id: pending.sender_transfer_id,
+            token: pending.token,
+        };
+        match tokio::time::timeout(DELIVERY_RECEIPT_TIMEOUT, client.report_delivery(receipt)).await
+        {
+            Ok(Ok(DeliveryReceiptResponse::Recorded)) => {
+                if let Err(error) = self
+                    .repository
+                    .delete_pending_delivery_receipt(&pending.request_id)
+                    .await
+                {
+                    tracing::warn!(%error, request_id = %pending.request_id, "failed to clear recorded delivery receipt");
+                    return;
+                }
+                self.emit_transfer(
+                    pending.local_transfer_id,
+                    "receive",
+                    "delivery",
+                    "receipt-recorded",
+                    json!({ "sender_transfer_id": pending.sender_transfer_id }),
+                );
+            }
+            Ok(Ok(DeliveryReceiptResponse::Rejected { reason })) => {
+                let _ = self
+                    .repository
+                    .delete_pending_delivery_receipt(&pending.request_id)
+                    .await;
+                self.emit_transfer(
+                    pending.local_transfer_id,
+                    "receive",
+                    "delivery",
+                    "receipt-rejected",
+                    json!({ "reason": reason }),
+                );
+            }
+            Ok(Err(error)) => self.emit_transfer(
+                pending.local_transfer_id,
+                "receive",
+                "delivery",
+                "receipt-failed",
+                json!({ "reason": error.to_string() }),
+            ),
+            Err(_) => self.emit_transfer(
+                pending.local_transfer_id,
+                "receive",
+                "delivery",
+                "receipt-failed",
+                json!({ "reason": "delivery receipt timed out" }),
+            ),
+        }
+    }
+}

crates/vnidrop/src/runtime/lifecycle.rs

@@ -187,6 +187,10 @@ impl CoreInner {
         // Flush before stopping the router so the app can show the shutdown
         // event even if the process exits soon after Compose disposes the core.
         self.event_hub.flush().await;
+        if let Some(task) = self.delivery_receipt_task.lock().await.take() {
+            task.abort();
+            let _ = task.await;
+        }
         if let Err(error) = self.router.shutdown().await {
             self.emit_endpoint(
                 "shutdown",

crates/vnidrop/src/runtime/mod.rs

@@ -7,6 +7,7 @@
 //! - [`lifecycle`] — cancel/delete/shutdown/status/access
 //! - [`provider`] — blob provider events and per-connection send progress
 
+mod delivery;
 mod facade;
 mod lifecycle;
 mod provider;
@@ -38,7 +39,7 @@ use iroh_blobs::{
 };
 use serde_json::json;
 use tokio::{
-    sync::{oneshot, Mutex as TokioMutex, Semaphore},
+    sync::{oneshot, Mutex as TokioMutex, Notify, Semaphore},
     task::JoinHandle,
 };
 
@@ -77,6 +78,8 @@ pub(super) struct CoreInner {
     pub(super) hash_to_transfer: TokioMutex<HashMap<String, HashSet<u64>>>,
     pub(super) connection_endpoints: TokioMutex<HashMap<u64, String>>,
     pub(super) provider_task: TokioMutex<Option<JoinHandle<()>>>,
+    pub(super) delivery_receipt_notify: Notify,
+    pub(super) delivery_receipt_task: TokioMutex<Option<JoinHandle<()>>>,
     pub(super) shutdown_started: AtomicBool,
 }
 
@@ -244,6 +247,8 @@ impl CoreInner {
             hash_to_transfer: TokioMutex::new(restored_hashes),
             connection_endpoints: TokioMutex::new(HashMap::new()),
             provider_task: TokioMutex::new(None),
+            delivery_receipt_notify: Notify::new(),
+            delivery_receipt_task: TokioMutex::new(None),
             shutdown_started: AtomicBool::new(false),
         });
 
@@ -257,6 +262,7 @@ impl CoreInner {
             }),
         );
         inner.spawn_provider_event_task(event_rx).await;
+        inner.spawn_delivery_receipt_task().await;
         Ok(inner)
     }
 

crates/vnidrop/src/runtime/receive.rs

@@ -26,8 +26,8 @@ use crate::{
         validated_relative_string, wait_for_writer, write_stream_to_blocking_writer,
         AtomicOutputFile,
     },
-    handshake::{DeliveryReceipt, DeliveryReceiptResponse, HandshakeResponse, HandshakeService},
-    repository::{ReceivedArtifactInsert, TransferUpsert},
+    handshake::{DeliveryReceipt, HandshakeResponse, HandshakeService},
+    repository::{PendingDeliveryReceiptInsert, ReceivedArtifactInsert, TransferUpsert},
     ticket::{parse_transfer_ticket_with_limits, ParsedTransferTicket},
     transfer_state::{TransferDirection, TransferStatus},
 };
@@ -271,6 +271,7 @@ impl CoreInner {
                 .map_err(VnidropError::filesystem)?;
         }
         let sender_addr = parsed.blob_ticket.addr().clone();
+        let sender_blob_ticket = parsed.blob_ticket.to_string();
 
         self.emit_transfer(transfer_id, "receive", "network", "connecting", json!({}));
         // Every VniDrop ticket carries metadata and must complete the handshake.
@@ -352,40 +353,18 @@ impl CoreInner {
         self.export_collection(transfer_id, total_files, target, collection)
             .await?;
         self.repository
-            .transition_transfer_status(
-                transfer_id,
-                TransferStatus::Receiving,
-                TransferStatus::Done,
-            )
+            .complete_receive_with_pending_receipt(PendingDeliveryReceiptInsert {
+                local_transfer_id: transfer_id,
+                sender_blob_ticket: &sender_blob_ticket,
+                request_id: &delivery_receipt.request_id,
+                sender_transfer_id: delivery_receipt.transfer_id,
+                token: &delivery_receipt.token,
+            })
             .await
             .map_err(VnidropError::repository)?;
         drop(download_tag);
         self.emit_transfer(transfer_id, "receive", "lifecycle", "done", json!({}));
-        let sender_transfer_id = delivery_receipt.transfer_id;
-        let client = HandshakeService::client(self.endpoint.clone(), sender_addr);
-        match client.report_delivery(delivery_receipt).await {
-            Ok(DeliveryReceiptResponse::Recorded) => self.emit_transfer(
-                transfer_id,
-                "receive",
-                "delivery",
-                "receipt-recorded",
-                json!({ "sender_transfer_id": sender_transfer_id }),
-            ),
-            Ok(DeliveryReceiptResponse::Rejected { reason }) => self.emit_transfer(
-                transfer_id,
-                "receive",
-                "delivery",
-                "receipt-rejected",
-                json!({ "reason": reason }),
-            ),
-            Err(error) => self.emit_transfer(
-                transfer_id,
-                "receive",
-                "delivery",
-                "receipt-failed",
-                json!({ "reason": error.to_string() }),
-            ),
-        }
+        self.delivery_receipt_notify.notify_one();
         Ok(())
     }
 

crates/vnidrop/src/tests/repository.rs

@@ -1,6 +1,9 @@
 use crate::{
     api::{CoreEvent, ReceivedLocatorKind},
-    repository::{ReceivedArtifactInsert, ReceiverRequestInsert, Repository, TransferUpsert},
+    repository::{
+        PendingDeliveryReceiptInsert, ReceivedArtifactInsert, ReceiverRequestInsert, Repository,
+        TransferUpsert,
+    },
     transfer_state::{ReceiverRequestStatus, TransferDirection, TransferStatus},
 };
 
@@ -63,7 +66,7 @@ async fn received_artifacts_survive_history_deletion() {
 async fn persists_transfers_and_events_across_reopen() {
     let temp = tempfile::tempdir().unwrap();
     let repository = Repository::open(temp.path()).await.unwrap();
-    assert_eq!(repository.schema_version().await.unwrap(), 5);
+    assert_eq!(repository.schema_version().await.unwrap(), 6);
     repository
         .insert_transfer(transfer(
             7,
@@ -112,6 +115,57 @@ async fn persists_transfers_and_events_across_reopen() {
     assert_eq!(events[0].id, "event-1");
 }
 
+#[tokio::test]
+async fn receive_completion_persists_delivery_receipt_until_recorded() {
+    let temp = tempfile::tempdir().unwrap();
+    let repository = Repository::open(temp.path()).await.unwrap();
+    repository
+        .start_receive(transfer(
+            93,
+            TransferDirection::Receive,
+            TransferStatus::Receiving,
+        ))
+        .await
+        .unwrap();
+    repository
+        .complete_receive_with_pending_receipt(PendingDeliveryReceiptInsert {
+            local_transfer_id: 93,
+            sender_blob_ticket: "blob-ticket",
+            request_id: "request-93",
+            sender_transfer_id: 39,
+            token: "receipt-token",
+        })
+        .await
+        .unwrap();
+
+    let transfer = repository
+        .list_transfers()
+        .await
+        .unwrap()
+        .into_iter()
+        .find(|transfer| transfer.transfer_id == 93)
+        .unwrap();
+    assert_eq!(transfer.status, "done");
+    drop(repository);
+
+    let reopened = Repository::open(temp.path()).await.unwrap();
+    let pending = reopened.list_pending_delivery_receipts().await.unwrap();
+    assert_eq!(pending.len(), 1);
+    assert_eq!(pending[0].local_transfer_id, 93);
+    assert_eq!(pending[0].sender_transfer_id, 39);
+    assert_eq!(pending[0].request_id, "request-93");
+    assert_eq!(pending[0].token, "receipt-token");
+    reopened
+        .delete_pending_delivery_receipt("request-93")
+        .await
+        .unwrap();
+    assert!(reopened
+        .list_pending_delivery_receipts()
+        .await
+        .unwrap()
+        .is_empty());
+}
+
 #[tokio::test]
 async fn receiver_request_can_only_be_resolved_once() {
     let temp = tempfile::tempdir().unwrap();
@@ -527,7 +581,7 @@ async fn migrates_schema_v2_identity_without_losing_transfer() {
     pool.close().await;
 
     let repository = Repository::open(temp.path()).await.unwrap();
-    assert_eq!(repository.schema_version().await.unwrap(), 5);
+    assert_eq!(repository.schema_version().await.unwrap(), 6);
     let stored = repository.list_transfers().await.unwrap().remove(0);
     assert_eq!(stored.transfer_id, 7);
     assert_eq!(stored.local_id, "legacy-7-send");

crates/vnidrop/src/tests/runtime.rs

@@ -3,7 +3,7 @@ use std::sync::Arc;
 use iroh_blobs::Hash;
 
 use crate::{
-    repository::{Repository, TransferUpsert},
+    repository::{PendingDeliveryReceiptInsert, Repository, TransferUpsert},
     transfer_state::{TransferDirection, TransferStatus},
     CoreEvent, CoreEventSink, VnidropCore, VnidropError,
 };
@@ -98,6 +98,63 @@ fn startup_recovers_interrupted_transfer_and_persists_event() {
     core.shutdown();
 }
 
+#[test]
+fn startup_processes_persisted_delivery_receipts() {
+    let temp = tempfile::tempdir().unwrap();
+    let preparation_runtime = tokio::runtime::Runtime::new().unwrap();
+    preparation_runtime.block_on(async {
+        let repository = Repository::open(temp.path()).await.unwrap();
+        repository
+            .start_receive(TransferUpsert {
+                transfer_id: 94,
+                peer_id: None,
+                direction: TransferDirection::Receive,
+                status: TransferStatus::Receiving,
+                transfer_name: Some("completed receive"),
+                content_hash: Some("hash"),
+                ticket: None,
+                file_count: 1,
+                total_size: 5,
+                access_mode: "approval_required",
+            })
+            .await
+            .unwrap();
+        repository
+            .complete_receive_with_pending_receipt(PendingDeliveryReceiptInsert {
+                local_transfer_id: 94,
+                sender_blob_ticket: "invalid-ticket",
+                request_id: "request-94",
+                sender_transfer_id: 49,
+                token: "receipt-token",
+            })
+            .await
+            .unwrap();
+    });
+    drop(preparation_runtime);
+
+    let core = VnidropCore::initialize(
+        temp.path().to_string_lossy().to_string(),
+        Arc::new(TestSink),
+    )
+    .unwrap();
+    let started = std::time::Instant::now();
+    loop {
+        if core.list_events(Some(94)).unwrap().iter().any(|event| {
+            event.phase == "delivery"
+                && event.kind == "receipt-rejected"
+                && event.data_json.contains("invalid-sender-ticket")
+        }) {
+            break;
+        }
+        assert!(
+            started.elapsed() < std::time::Duration::from_secs(2),
+            "startup did not process the persisted delivery receipt"
+        );
+        std::thread::sleep(std::time::Duration::from_millis(10));
+    }
+    core.shutdown();
+}
+
 #[test]
 fn startup_fails_persisted_share_when_root_blob_is_missing() {
     let temp = tempfile::tempdir().unwrap();

crates/vnidrop/tests/approval.rs

@@ -1,6 +1,9 @@
 mod support;
 
-use std::sync::Arc;
+use std::{
+    sync::Arc,
+    time::{Duration, Instant},
+};
 
 use support::{
     receive_with_response, share_path, wait_for_receiver_request, CoreGuard, RecordingSink,
@@ -8,6 +11,24 @@ use support::{
 };
 use vnidrop::{CoreLimits, ShareMetadataInput, ShareSource, SourceKind, TransferAccessMode};
 
+fn wait_for_completed_delivery(
+    sender: &vnidrop::VnidropCore,
+    transfer_id: u64,
+) -> Vec<vnidrop::ReceiverRequest> {
+    let started = Instant::now();
+    loop {
+        let requests = sender.list_receiver_requests(transfer_id).unwrap();
+        if requests.iter().any(|request| request.status == "completed") {
+            return requests;
+        }
+        assert!(
+            started.elapsed() < Duration::from_secs(5),
+            "delivery receipt was not recorded"
+        );
+        std::thread::sleep(Duration::from_millis(10));
+    }
+}
+
 #[test]
 fn public_share_receives_without_sender_approval() {
     let source_dir = tempfile::tempdir().unwrap();
@@ -47,10 +68,7 @@ fn public_share_receives_without_sender_approval() {
         std::fs::read(output_dir.path().join("public.txt")).unwrap(),
         b"public content"
     );
-    let deliveries = sender
-        .core
-        .list_receiver_requests(share.transfer_id)
-        .unwrap();
+    let deliveries = wait_for_completed_delivery(&sender.core, share.transfer_id);
     assert_eq!(deliveries.len(), 1);
     assert_eq!(deliveries[0].receiver_name.as_deref(), Some("Receiver"));
     assert_eq!(deliveries[0].status, "completed");
@@ -104,10 +122,7 @@ fn approval_required_denies_then_allows_receiver() {
         std::fs::read(allowed_output.path().join("private.txt")).unwrap(),
         b"approved content"
     );
-    let completed = sender
-        .core
-        .list_receiver_requests(share.transfer_id)
-        .unwrap();
+    let completed = wait_for_completed_delivery(&sender.core, share.transfer_id);
     assert!(completed
         .iter()
         .any(|request| request.status == "completed"));

shared/build.gradle.kts

@@ -131,6 +131,7 @@ kotlin {
 		}
 		jvmMain.dependencies {
 			implementation(libs.filekit.dialogs)
+			implementation(libs.jna.platform)
 		}
 		commonMain.dependencies {
 			implementation(libs.compose.runtime)

shared/src/commonMain/kotlin/com/vnidrop/app/core/CoreRepository.kt

@@ -50,7 +50,7 @@ class CoreRepository(
 			val transferId = model.transferId
 			if (transferId != null) {
 				when (model.phase) {
-					"approval" -> _signals.tryEmit(CoreSignal.ApprovalChanged(transferId))
+					"approval", "access" -> _signals.tryEmit(CoreSignal.ApprovalChanged(transferId))
 					"delivery" -> _signals.tryEmit(CoreSignal.ReceiverHistoryChanged(transferId))
 				}
 				if (model.shouldRefreshTransfers()) {

shared/src/commonMain/kotlin/com/vnidrop/app/feature/send/SendCatalog.kt

@@ -35,6 +35,8 @@ import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import com.vnidrop.app.core.CoreEventModel
+import com.vnidrop.app.core.ReceiverDeliveryStatus
+import com.vnidrop.app.core.ReceiverRequestModel
 import com.vnidrop.app.core.Transfer
 import com.vnidrop.app.core.TransferStatus
 import com.vnidrop.app.ui.components.PillTone
@@ -79,6 +81,7 @@ internal fun SendFloatingAction(onClick: () -> Unit, modifier: Modifier = Modifi
 internal fun TransferCatalog(
 	transfers: List<Transfer>,
 	transferThumbnails: Map<ULong, ByteArray>,
+	receiversByTransfer: Map<ULong, List<ReceiverRequestModel>> = emptyMap(),
 	events: List<CoreEventModel> = emptyList(),
 	windowClass: WindowClass,
 	onOpenComposer: () -> Unit,
@@ -107,9 +110,18 @@ internal fun TransferCatalog(
 				)
 			}
 			items(transfers, key = Transfer::localId) { transfer ->
+				val activeReceiverEndpointIds = receiversByTransfer[transfer.transferId]
+					.orEmpty()
+					.filter { it.status == ReceiverDeliveryStatus.Accepted }
+					.mapTo(mutableSetOf()) { it.remoteEndpointId }
 				val progress = when (transfer.status) {
 					TransferStatus.Importing -> progressForTransfer(events, transfer.transferId)
-					TransferStatus.Sharing -> activeSendProgress(events, transfer.transferId, transfer.totalSize)
+					TransferStatus.Sharing -> activeSendProgress(
+						events,
+						transfer.transferId,
+						activeReceiverEndpointIds,
+						transfer.totalSize,
+					)
 					else -> null
 				}
 				TransferListItem(

shared/src/commonMain/kotlin/com/vnidrop/app/feature/send/SendScreen.kt

@@ -69,6 +69,7 @@ fun SendScreen(
 			TransferCatalog(
 				transfers = outgoingTransfers,
 				transferThumbnails = state.transferThumbnails,
+				receiversByTransfer = state.receiversByTransfer,
 				events = coreState.events,
 				windowClass = windowClass,
 				onOpenComposer = onOpenComposer,

shared/src/commonMain/kotlin/com/vnidrop/app/feature/send/SendViewModel.kt

@@ -8,6 +8,8 @@ import com.vnidrop.app.core.FileSystemService
 import com.vnidrop.app.core.PickedShareFile
 import com.vnidrop.app.core.ShareAccessPolicy
 import com.vnidrop.app.core.ReceiverRequestModel
+import com.vnidrop.app.core.TransferDirection
+import com.vnidrop.app.core.TransferStatus
 import com.vnidrop.app.preferences.PreferencesRepository
 import com.vnidrop.app.ui.feedback.UiMessage
 import com.vnidrop.app.ui.feedback.UiMessageController
@@ -39,6 +41,7 @@ data class SendState(
 	val transferThumbnails: Map<ULong, ByteArray> = emptyMap(),
 	val detailPanel: TransferDetailPanel? = null,
 	val receiverHistory: List<ReceiverRequestModel> = emptyList(),
+	val receiversByTransfer: Map<ULong, List<ReceiverRequestModel>> = emptyMap(),
 	val isLoadingReceivers: Boolean = false,
 	val isDeleteConfirmationOpen: Boolean = false,
 	val isDeleting: Boolean = false,
@@ -82,15 +85,24 @@ class SendViewModel(
 						if (signal.transferId == _state.value.selectedTransferId) {
 							refreshReceivers(signal.transferId)
 						}
+						refreshReceiverStatuses(signal.transferId)
 					}
 					is CoreSignal.ApprovalChanged -> {
 						if (signal.transferId == _state.value.selectedTransferId) {
 							refreshReceivers(signal.transferId)
 						}
+						refreshReceiverStatuses(signal.transferId)
 					}
 				}
 			}
 		}
+		viewModelScope.launch {
+			coreState.map { core ->
+				core.transfers
+					.filter { it.direction == TransferDirection.Send && it.status in setOf(TransferStatus.Importing, TransferStatus.Sharing) }
+					.mapTo(mutableSetOf()) { it.transferId }
+			}.distinctUntilChanged().collect(::syncSharingReceivers)
+		}
 		viewModelScope.launch {
 			filePreviewRepository.previews.collect { previews ->
 				_state.update { it.copy(transferThumbnails = previews) }
@@ -316,4 +328,21 @@ class SendViewModel(
 			)
 		}
 	}
+
+	private fun syncSharingReceivers(transferIds: Set<ULong>) {
+		_state.update { current ->
+			current.copy(receiversByTransfer = current.receiversByTransfer.filterKeys { it in transferIds })
+		}
+		transferIds.forEach(::refreshReceiverStatuses)
+	}
+
+	private fun refreshReceiverStatuses(transferId: ULong) {
+		viewModelScope.launch {
+			repository.receiverRequests(transferId).onSuccess { requests ->
+				_state.update { current ->
+					current.copy(receiversByTransfer = current.receiversByTransfer + (transferId to requests))
+				}
+			}
+		}
+	}
 }

shared/src/commonMain/kotlin/com/vnidrop/app/feature/settings/SettingsOverview.kt

@@ -34,13 +34,6 @@ internal fun SettingsOverview(
 			fontWeight = FontWeight.Bold,
 		)
 		SettingsGroup {
-			SettingsRow(
-				icon = AppIcon.Storage,
-				title = stringResource(Res.string.storage_title),
-				selected = state.selectedSection == SettingsSection.Storage,
-				onClick = { onSectionSelected(SettingsSection.Storage) },
-			)
-			SettingsDivider()
 			SettingsRow(
 				icon = AppIcon.User,
 				title = stringResource(Res.string.preferences_title),
@@ -65,6 +58,13 @@ internal fun SettingsOverview(
 				onClick = { onSectionSelected(SettingsSection.Notifications) },
 			)
 			SettingsDivider()
+			SettingsRow(
+				icon = AppIcon.Storage,
+				title = stringResource(Res.string.storage_title),
+				selected = state.selectedSection == SettingsSection.Storage,
+				onClick = { onSectionSelected(SettingsSection.Storage) },
+			)
+			SettingsDivider()
 			SettingsRow(
 				icon = AppIcon.Info,
 				title = stringResource(Res.string.about_title),

shared/src/commonMain/kotlin/com/vnidrop/app/ui/state/AppUiModels.kt

@@ -138,7 +138,8 @@ fun progressForReceiver(
 			detail = null,
 		)
 	}
-	if (latest.kind == "completed" && transferEvents.none { it.kind == "progress" || it.kind == "started" }) {
+	val progress = aggregateReceiverProgress(transferEvents, totalSizeHint)
+	if (latest.kind == "completed" && (progress == null || progress >= 0.999f)) {
 		return TransferProgress(
 			transferId = transferId,
 			phase = "transfer",
@@ -149,7 +150,6 @@ fun progressForReceiver(
 		)
 	}
 
-	val progress = aggregateReceiverProgress(transferEvents, totalSizeHint)
 	return TransferProgress(
 		transferId = transferId,
 		phase = "transfer",
@@ -167,36 +167,21 @@ fun progressForReceiver(
 fun activeSendProgress(
 	events: List<CoreEventModel>,
 	transferId: ULong,
+	activeReceiverEndpointIds: Set<String>,
 	totalSizeHint: ULong? = null,
 ): TransferProgress? {
+	if (activeReceiverEndpointIds.isEmpty()) return null
 	val endpointIds = events
 		.asSequence()
 		.filter { it.transferId == transferId && it.direction == "send" && it.phase == "transfer" }
 		.mapNotNull { findString(it.dataJson, "endpoint_id") }
+		.filter { it in activeReceiverEndpointIds }
 		.distinct()
 		.toList()
-	if (endpointIds.isEmpty()) {
-		// Fall back to connection-scoped events without endpoint attribution.
-		val relevant = events.filter {
-			it.transferId == transferId &&
-				it.direction == "send" &&
-				it.phase == "transfer" &&
-				it.kind in setOf("started", "progress")
-		}
-		if (relevant.isEmpty()) return null
-		return TransferProgress(
-			transferId = transferId,
-			phase = "transfer",
-			kind = relevant.first().kind,
-			label = Res.string.progress_sending,
-			progress = aggregateReceiverProgress(relevant, totalSizeHint),
-			detail = progressDetail(relevant.first()),
-		)
-	}
+	if (endpointIds.isEmpty()) return null
 	return endpointIds
 		.mapNotNull { progressForReceiver(events, transferId, it, totalSizeHint) }
 		.firstOrNull { it.kind == "progress" || it.kind == "started" }
-		?: endpointIds.mapNotNull { progressForReceiver(events, transferId, it, totalSizeHint) }.firstOrNull()
 }
 
 fun summarizeProgress(events: List<CoreEventModel>): List<TransferProgress> =

shared/src/commonTest/kotlin/com/vnidrop/app/feature/ViewModelsTest.kt

@@ -3,9 +3,12 @@ package com.vnidrop.app.feature
 import com.vnidrop.app.DeviceInfo
 import com.vnidrop.app.PlatformEnvironment
 import com.vnidrop.app.core.CoreState
+import com.vnidrop.app.core.CoreSignal
 import com.vnidrop.app.core.PickedShareFile
 import com.vnidrop.app.core.ReceiveFolder
 import com.vnidrop.app.core.ReceiveFolderKind
+import com.vnidrop.app.core.ReceiverDeliveryStatus
+import com.vnidrop.app.core.ReceiverRequestModel
 import com.vnidrop.app.core.Share
 import com.vnidrop.app.core.ShareAccessPolicy
 import com.vnidrop.app.core.Transfer
@@ -251,6 +254,38 @@ class ViewModelsTest {
 		assertEquals(listOf(selected), fileSystem.discardedPickedFiles)
 	}
 
+	@Test
+	fun sendViewModelTracksReceiverCompletionForCatalogProgress() = runTest {
+		Dispatchers.setMain(StandardTestDispatcher(testScheduler))
+		val accepted = ReceiverRequestModel(
+			id = "request-7",
+			transferId = 7UL,
+			remoteEndpointId = "peer-a",
+			transferName = "Photo",
+			receiverName = "Receiver",
+			receiverDeviceName = null,
+			appVersion = "1.0",
+			status = ReceiverDeliveryStatus.Accepted,
+			reason = null,
+			requestedAt = 1L,
+			respondedAt = 2L,
+			completedAt = null,
+		)
+		val core = FakeCoreGateway().apply {
+			mutableState.value = CoreState(isInitialized = true, transfers = listOf(sentTransfer(7UL)))
+			requests[7UL] = listOf(accepted)
+		}
+		val viewModel = SendViewModel(core, FakeFileSystemService(folder), preferences(), FakeFilePreviewRepository(), UiMessageController())
+		advanceUntilIdle()
+		assertEquals(ReceiverDeliveryStatus.Accepted, viewModel.state.value.receiversByTransfer.getValue(7UL).single().status)
+
+		core.requests[7UL] = listOf(accepted.copy(status = ReceiverDeliveryStatus.Completed, completedAt = 3L))
+		core.mutableSignals.emit(CoreSignal.ReceiverHistoryChanged(7UL))
+		advanceUntilIdle()
+
+		assertEquals(ReceiverDeliveryStatus.Completed, viewModel.state.value.receiversByTransfer.getValue(7UL).single().status)
+	}
+
 	@Test
 	fun sendComposerClosesAfterSuccessfulAtomicShareCreation() = runTest {
 		Dispatchers.setMain(StandardTestDispatcher(testScheduler))
@@ -722,6 +757,22 @@ class ViewModelsTest {
 		updatedAt = 1L,
 	)
 
+	private fun sentTransfer(id: ULong) = Transfer(
+		localId = "send-$id",
+		transferId = id,
+		direction = TransferDirection.Send,
+		status = TransferStatus.Sharing,
+		peerId = null,
+		transferName = "Sent $id",
+		contentHash = "hash-$id",
+		fileCount = 1UL,
+		totalSize = 42UL,
+		ticket = "ticket-$id",
+		accessPolicy = ShareAccessPolicy.RequireApproval,
+		createdAt = 1L,
+		updatedAt = 1L,
+	)
+
 	private fun sampleTicketInspection() = com.vnidrop.app.core.TicketInspectionModel(
 		kind = "vnidrop",
 		metadata = com.vnidrop.app.core.TransferMetadataModel(1UL, "Photo", null, "hash", 1UL, 42UL),

shared/src/commonTest/kotlin/com/vnidrop/app/ui/state/AppUiModelsTest.kt

@@ -211,9 +211,10 @@ class AppUiModelsTest {
 				direction = "send",
 			),
 		)
-		val progress = activeSendProgress(events, 7UL, totalSizeHint = 100UL)
+		val progress = activeSendProgress(events, 7UL, setOf("peer-a"), totalSizeHint = 100UL)
 		assertEquals(0.3f, progress?.progress)
 		assertEquals(Res.string.progress_sending, progress?.label)
+		assertEquals(null, activeSendProgress(events, 7UL, emptySet(), totalSizeHint = 100UL))
 	}
 
 	@Test
@@ -270,6 +271,39 @@ class AppUiModelsTest {
 		assertEquals(1f, progress?.progress)
 	}
 
+	@Test
+	fun progressForReceiverCompletedAfterProgressUsesCompletedLabel() {
+		val events = listOf(
+			event(
+				id = "done",
+				phase = "transfer",
+				kind = "completed",
+				data = """{"connection_id":1,"request_id":1,"endpoint_id":"peer-a"}""",
+				direction = "send",
+			),
+			event(
+				id = "progress",
+				phase = "transfer",
+				kind = "progress",
+				data = """{"connection_id":1,"request_id":1,"endpoint_id":"peer-a","end_offset":100}""",
+				direction = "send",
+			),
+			event(
+				id = "started",
+				phase = "transfer",
+				kind = "started",
+				data = """{"connection_id":1,"request_id":1,"endpoint_id":"peer-a","size":100}""",
+				direction = "send",
+			),
+		)
+
+		val progress = progressForReceiver(events, 7UL, "peer-a", totalSizeHint = 100UL)
+		assertEquals("completed", progress?.kind)
+		assertEquals(Res.string.progress_completed, progress?.label)
+		assertEquals(1f, progress?.progress)
+		assertEquals(null, activeSendProgress(events, 7UL, setOf("peer-a"), totalSizeHint = 100UL))
+	}
+
 	private fun storedTransfer(status: TransferStatus): Transfer =
 		Transfer(
 			localId = "local-1",

shared/src/jvmMain/kotlin/com/vnidrop/app/core/FilePicker.jvm.kt

@@ -32,8 +32,8 @@ actual fun rememberShareFilePicker(
 	return remember(onFilesPicked, onError, scope) {
 		object : ShareFilePicker {
 			override fun pickFiles() {
-				if (jvmFilePickerBackend(System.getProperty("os.name")) == JvmFilePickerBackend.XdgPortal) {
-					scope.launch {
+				when (jvmFilePickerBackend(System.getProperty("os.name"))) {
+					JvmFilePickerBackend.XdgPortal -> scope.launch {
 						try {
 							val selected = withContext(Dispatchers.IO) { pickShareFilesWithPortal() }
 							if (selected.isNotEmpty()) onFilesPicked(selected)
@@ -43,8 +43,20 @@ actual fun rememberShareFilePicker(
 							onError(error.message ?: error.toString())
 						}
 					}
-				} else {
-					openPicker(onError) {
+					JvmFilePickerBackend.WindowsNative -> {
+						val owner = activeFrame()
+						scope.launch {
+							try {
+								val selected = withContext(Dispatchers.IO) { pickWindowsFiles(owner) }
+								if (selected.isNotEmpty()) onFilesPicked(selected)
+							} catch (error: CancellationException) {
+								throw error
+							} catch (error: Throwable) {
+								onError(error.message ?: error.toString())
+							}
+						}
+					}
+					JvmFilePickerBackend.AwtSwing -> openPicker(onError) {
 						val selected = pickShareFiles()
 						if (selected.isNotEmpty()) onFilesPicked(selected)
 					}
@@ -52,8 +64,8 @@ actual fun rememberShareFilePicker(
 			}
 
 			override fun pickFolder() {
-				if (jvmFilePickerBackend(System.getProperty("os.name")) == JvmFilePickerBackend.XdgPortal) {
-					scope.launch {
+				when (jvmFilePickerBackend(System.getProperty("os.name"))) {
+					JvmFilePickerBackend.XdgPortal -> scope.launch {
 						try {
 							val selected = withContext(Dispatchers.IO) {
 								pickDirectoryWithPortal("Select folder to share")?.toPickedShareFile(isDirectory = true)
@@ -65,8 +77,22 @@ actual fun rememberShareFilePicker(
 							onError(error.message ?: error.toString())
 						}
 					}
-				} else {
-					openPicker(onError) {
+					JvmFilePickerBackend.WindowsNative -> {
+						val owner = activeFrame()
+						scope.launch {
+							try {
+								val selected = withContext(Dispatchers.IO) {
+									pickWindowsFolder("Select folder to share", owner)
+								} ?: return@launch
+								onFilesPicked(listOf(selected.toPickedShareFile(isDirectory = true)))
+							} catch (error: CancellationException) {
+								throw error
+							} catch (error: Throwable) {
+								onError(error.message ?: error.toString())
+							}
+						}
+					}
+					JvmFilePickerBackend.AwtSwing -> openPicker(onError) {
 						val selected = pickDirectory(title = "Select folder to share") ?: return@openPicker
 						onFilesPicked(listOf(selected.toPickedShareFile(isDirectory = true)))
 					}
@@ -85,8 +111,8 @@ actual fun rememberReceiveFolderPicker(
 	return remember(onFolderPicked, onError, scope) {
 		object : ReceiveFolderPicker {
 			override fun pickFolder() {
-				if (jvmFilePickerBackend(System.getProperty("os.name")) == JvmFilePickerBackend.XdgPortal) {
-					scope.launch {
+				when (jvmFilePickerBackend(System.getProperty("os.name"))) {
+					JvmFilePickerBackend.XdgPortal -> scope.launch {
 						try {
 							val selected = withContext(Dispatchers.IO) {
 								pickDirectoryWithPortal("Select receive folder")
@@ -98,8 +124,22 @@ actual fun rememberReceiveFolderPicker(
 							onError(error.message ?: error.toString())
 						}
 					}
-				} else {
-					openPicker(onError) {
+					JvmFilePickerBackend.WindowsNative -> {
+						val owner = activeFrame()
+						scope.launch {
+							try {
+								val selected = withContext(Dispatchers.IO) {
+									pickWindowsFolder("Select receive folder", owner)
+								} ?: return@launch
+								onFolderPicked(selected.toReceiveFolder())
+							} catch (error: CancellationException) {
+								throw error
+							} catch (error: Throwable) {
+								onError(error.message ?: error.toString())
+							}
+						}
+					}
+					JvmFilePickerBackend.AwtSwing -> openPicker(onError) {
 						val selected = pickDirectory(title = "Select receive folder") ?: return@openPicker
 						onFolderPicked(selected.toReceiveFolder())
 					}
@@ -111,11 +151,16 @@ actual fun rememberReceiveFolderPicker(
 
 internal enum class JvmFilePickerBackend {
 	XdgPortal,
+	WindowsNative,
 	AwtSwing,
 }
 
 internal fun jvmFilePickerBackend(osName: String?): JvmFilePickerBackend =
-	if (osName.orEmpty().startsWith("Linux", ignoreCase = true)) JvmFilePickerBackend.XdgPortal else JvmFilePickerBackend.AwtSwing
+	when {
+		osName.orEmpty().startsWith("Linux", ignoreCase = true) -> JvmFilePickerBackend.XdgPortal
+		osName.orEmpty().startsWith("Windows", ignoreCase = true) -> JvmFilePickerBackend.WindowsNative
+		else -> JvmFilePickerBackend.AwtSwing
+	}
 
 private fun openPicker(
 	onError: (String) -> Unit,
@@ -167,7 +212,7 @@ private suspend fun pickDirectoryWithPortal(title: String): File? =
 		dialogSettings = FileKitDialogSettings(title = title, parentWindow = activeFrame()),
 	)?.file
 
-private fun File.toPickedShareFile(isDirectory: Boolean): PickedShareFile =
+internal fun File.toPickedShareFile(isDirectory: Boolean): PickedShareFile =
 	PickedShareFile(
 		value = absolutePath,
 		displayName = name.ifBlank { absolutePath },

shared/src/jvmMain/kotlin/com/vnidrop/app/core/WindowsFilePicker.kt

@@ -0,0 +1,157 @@
+package com.vnidrop.app.core
+
+import com.sun.jna.Native
+import com.sun.jna.Pointer
+import com.sun.jna.WString
+import com.sun.jna.platform.win32.COM.COMUtils
+import com.sun.jna.platform.win32.COM.Unknown
+import com.sun.jna.platform.win32.Guid.GUID
+import com.sun.jna.platform.win32.Ole32
+import com.sun.jna.platform.win32.WinDef.HWND
+import com.sun.jna.platform.win32.WinNT.HRESULT
+import com.sun.jna.ptr.IntByReference
+import com.sun.jna.ptr.PointerByReference
+import java.awt.Frame
+import java.io.File
+
+internal enum class WindowsFilePickerMode {
+	Files,
+	Folder,
+}
+
+internal const val FOS_NOCHANGEDIR = 0x00000008
+internal const val FOS_PICKFOLDERS = 0x00000020
+internal const val FOS_FORCEFILESYSTEM = 0x00000040
+internal const val FOS_ALLOWMULTISELECT = 0x00000200
+internal const val FOS_PATHMUSTEXIST = 0x00000800
+internal const val FOS_FILEMUSTEXIST = 0x00001000
+
+internal fun windowsFilePickerOptions(mode: WindowsFilePickerMode): Int =
+	FOS_NOCHANGEDIR or FOS_FORCEFILESYSTEM or FOS_PATHMUSTEXIST or when (mode) {
+		WindowsFilePickerMode.Files -> FOS_ALLOWMULTISELECT or FOS_FILEMUSTEXIST
+		WindowsFilePickerMode.Folder -> FOS_PICKFOLDERS
+	}
+
+internal fun pickWindowsFiles(owner: Frame?): List<PickedShareFile> =
+	showWindowsFilePicker(
+		title = "Select files to share",
+		mode = WindowsFilePickerMode.Files,
+		owner = owner,
+	).map { it.toPickedShareFile(isDirectory = false) }
+
+internal fun pickWindowsFolder(title: String, owner: Frame?): File? =
+	showWindowsFilePicker(title, WindowsFilePickerMode.Folder, owner).singleOrNull()
+
+private fun showWindowsFilePicker(
+	title: String,
+	mode: WindowsFilePickerMode,
+	owner: Frame?,
+): List<File> {
+	val ole32 = Ole32.INSTANCE
+	val initialization = ole32.CoInitializeEx(Pointer.NULL, Ole32.COINIT_APARTMENTTHREADED)
+	COMUtils.checkRC(initialization)
+	try {
+		val dialogReference = PointerByReference()
+		COMUtils.checkRC(
+			ole32.CoCreateInstance(
+				GUID(CLSID_FILE_OPEN_DIALOG),
+				Pointer.NULL,
+				CLSCTX_INPROC_SERVER,
+				GUID(IID_FILE_OPEN_DIALOG),
+				dialogReference,
+			),
+		)
+		val dialog = FileOpenDialog(dialogReference.value)
+		try {
+			val existingOptions = IntByReference()
+			COMUtils.checkRC(dialog.getOptions(existingOptions))
+			COMUtils.checkRC(dialog.setOptions(existingOptions.value or windowsFilePickerOptions(mode)))
+			COMUtils.checkRC(dialog.setTitle(WString(title)))
+
+			val ownerHandle = owner
+				?.takeIf { it.isDisplayable }
+				?.let { HWND(Native.getWindowPointer(it)) }
+			val showResult = dialog.show(ownerHandle)
+			if (showResult.toInt() == HRESULT_CANCELLED) return emptyList()
+			COMUtils.checkRC(showResult)
+			return dialog.results(ole32)
+		} finally {
+			dialog.Release()
+		}
+	} finally {
+		ole32.CoUninitialize()
+	}
+}
+
+private class FileOpenDialog(pointer: Pointer) : Unknown(pointer) {
+	fun show(owner: HWND?): HRESULT = invokeHResult(3, owner)
+
+	fun setOptions(options: Int): HRESULT = invokeHResult(9, options)
+
+	fun getOptions(options: IntByReference): HRESULT = invokeHResult(10, options)
+
+	fun setTitle(title: WString): HRESULT = invokeHResult(17, title)
+
+	private fun getResults(results: PointerByReference): HRESULT = invokeHResult(27, results)
+
+	fun results(ole32: Ole32): List<File> {
+		val resultsReference = PointerByReference()
+		COMUtils.checkRC(getResults(resultsReference))
+		val results = ShellItemArray(resultsReference.value)
+		try {
+			val count = IntByReference()
+			COMUtils.checkRC(results.getCount(count))
+			return List(count.value) { index -> results.fileAt(index, ole32) }
+		} finally {
+			results.Release()
+		}
+	}
+
+	private fun invokeHResult(index: Int, vararg arguments: Any?): HRESULT =
+		_invokeNativeObject(index, arrayOf(pointer, *arguments), HRESULT::class.java) as HRESULT
+}
+
+private class ShellItemArray(pointer: Pointer) : Unknown(pointer) {
+	fun getCount(count: IntByReference): HRESULT = invokeHResult(7, count)
+
+	private fun getItemAt(index: Int, item: PointerByReference): HRESULT = invokeHResult(8, index, item)
+
+	fun fileAt(index: Int, ole32: Ole32): File {
+		val itemReference = PointerByReference()
+		COMUtils.checkRC(getItemAt(index, itemReference))
+		val item = ShellItem(itemReference.value)
+		try {
+			return item.file(ole32)
+		} finally {
+			item.Release()
+		}
+	}
+
+	private fun invokeHResult(index: Int, vararg arguments: Any?): HRESULT =
+		_invokeNativeObject(index, arrayOf(pointer, *arguments), HRESULT::class.java) as HRESULT
+}
+
+private class ShellItem(pointer: Pointer) : Unknown(pointer) {
+	private fun getDisplayName(name: PointerByReference): HRESULT =
+		invokeHResult(5, SIGDN_FILESYSPATH, name)
+
+	fun file(ole32: Ole32): File {
+		val nameReference = PointerByReference()
+		COMUtils.checkRC(getDisplayName(nameReference))
+		val name = nameReference.value
+		try {
+			return File(name.getWideString(0))
+		} finally {
+			ole32.CoTaskMemFree(name)
+		}
+	}
+
+	private fun invokeHResult(index: Int, vararg arguments: Any?): HRESULT =
+		_invokeNativeObject(index, arrayOf(pointer, *arguments), HRESULT::class.java) as HRESULT
+}
+
+private const val CLSCTX_INPROC_SERVER = 0x1
+private const val HRESULT_CANCELLED = 0x800704C7.toInt()
+private const val SIGDN_FILESYSPATH = 0x80058000.toInt()
+private const val CLSID_FILE_OPEN_DIALOG = "{DC1C5A9C-E88A-4DDE-A5A1-60F82A20AEF7}"
+private const val IID_FILE_OPEN_DIALOG = "{D57C7288-D4AD-4768-BE02-9D969532D960}"

shared/src/jvmTest/kotlin/com/vnidrop/app/core/FilePickerJvmTest.kt

@@ -2,6 +2,8 @@ package com.vnidrop.app.core
 
 import kotlin.test.Test
 import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
 
 class FilePickerJvmTest {
 	@Test
@@ -10,9 +12,34 @@ class FilePickerJvmTest {
 		assertEquals(JvmFilePickerBackend.XdgPortal, jvmFilePickerBackend("linux"))
 	}
 
+	@Test
+	fun windowsUsesTheModernNativePicker() {
+		assertEquals(JvmFilePickerBackend.WindowsNative, jvmFilePickerBackend("Windows 11"))
+		assertEquals(JvmFilePickerBackend.WindowsNative, jvmFilePickerBackend("windows 10"))
+	}
+
 	@Test
 	fun otherDesktopPlatformsKeepTheirExistingPickers() {
-		assertEquals(JvmFilePickerBackend.AwtSwing, jvmFilePickerBackend("Windows 11"))
 		assertEquals(JvmFilePickerBackend.AwtSwing, jvmFilePickerBackend("Mac OS X"))
 	}
+
+	@Test
+	fun windowsFilePickerAllowsMultipleFilesystemFiles() {
+		val options = windowsFilePickerOptions(WindowsFilePickerMode.Files)
+
+		assertTrue(options and FOS_FORCEFILESYSTEM != 0)
+		assertTrue(options and FOS_ALLOWMULTISELECT != 0)
+		assertTrue(options and FOS_FILEMUSTEXIST != 0)
+		assertFalse(options and FOS_PICKFOLDERS != 0)
+	}
+
+	@Test
+	fun windowsFolderPickerSelectsOneFilesystemFolder() {
+		val options = windowsFilePickerOptions(WindowsFilePickerMode.Folder)
+
+		assertTrue(options and FOS_FORCEFILESYSTEM != 0)
+		assertTrue(options and FOS_PICKFOLDERS != 0)
+		assertTrue(options and FOS_PATHMUSTEXIST != 0)
+		assertFalse(options and FOS_ALLOWMULTISELECT != 0)
+	}
 }