fix: Add decrypt button to NIP-17 chat and load cached gift wraps

- Add decrypt button to ChatViewer header for NIP-17 conversations
- Show pending count with unlock icon, allows decryption directly from chat
- Load cached gift wraps from Dexie on cold start (not just EventStore)
- EventStore is in-memory only, so on app reload we need to query Dexie
- Add events back to EventStore after loading from Dexie for consistency
- This fixes cold start scenarios where chat $me shows nothing

src/components/ChatViewer.tsx

@@ -9,6 +9,7 @@ import {
   AlertTriangle,
   RefreshCw,
   Paperclip,
+  Unlock,
 } from "lucide-react";
 import { getZapRequest } from "applesauce-common/helpers/zap";
 import { toast } from "sonner";
@@ -378,6 +379,42 @@ export function ChatViewer({
     }
   }, [protocol]);
 
+  // NIP-17 decrypt state
+  const [isDecrypting, setIsDecrypting] = useState(false);
+  const pendingCount =
+    use$(
+      () =>
+        protocol === "nip-17" ? nip17Adapter.getPendingCount$() : undefined,
+      [protocol],
+    ) ?? 0;
+
+  // Handle decrypt for NIP-17
+  const handleDecrypt = useCallback(async () => {
+    if (protocol !== "nip-17") return;
+    setIsDecrypting(true);
+    try {
+      const result = await nip17Adapter.decryptPending();
+      console.log(
+        `[Chat] Decrypted ${result.success} messages, ${result.failed} failed`,
+      );
+      if (result.success > 0) {
+        toast.success(
+          `Decrypted ${result.success} message${result.success !== 1 ? "s" : ""}`,
+        );
+      }
+      if (result.failed > 0) {
+        toast.warning(
+          `${result.failed} message${result.failed !== 1 ? "s" : ""} failed to decrypt`,
+        );
+      }
+    } catch (error) {
+      console.error("[Chat] Decrypt error:", error);
+      toast.error("Failed to decrypt messages");
+    } finally {
+      setIsDecrypting(false);
+    }
+  }, [protocol]);
+
   // State for retry trigger
   const [retryCount, setRetryCount] = useState(0);
 
@@ -810,6 +847,28 @@ export function ChatViewer({
           <div className="flex items-center gap-2 text-xs text-muted-foreground p-1">
             <MembersDropdown participants={derivedParticipants} />
             <RelaysDropdown conversation={conversation} />
+            {/* NIP-17 decrypt button */}
+            {protocol === "nip-17" && pendingCount > 0 && (
+              <Button
+                variant="outline"
+                size="sm"
+                className="h-6 gap-1 text-xs px-2"
+                onClick={handleDecrypt}
+                disabled={isDecrypting}
+              >
+                {isDecrypting ? (
+                  <>
+                    <Loader2 className="size-3 animate-spin" />
+                    <span className="hidden sm:inline">Decrypting...</span>
+                  </>
+                ) : (
+                  <>
+                    <Unlock className="size-3" />
+                    <span>{pendingCount}</span>
+                  </>
+                )}
+              </Button>
+            )}
             {(conversation.type === "group" ||
               conversation.type === "live-chat" ||
               conversation.type === "dm") && (

src/lib/chat/adapters/nip-17-adapter.ts

@@ -34,6 +34,7 @@ import accountManager from "@/services/accounts";
 import { hub } from "@/services/hub";
 import { relayListCache } from "@/services/relay-list-cache";
 import { AGGREGATOR_RELAYS } from "@/services/loaders";
+import { getEventsForFilters } from "@/services/event-cache";
 import { isNip05, resolveNip05 } from "@/lib/nip05";
 import { getDisplayName } from "@/lib/nostr-utils";
 import { isValidHexPubkey } from "@/lib/nostr-validation";
@@ -660,6 +661,10 @@ export class Nip17Adapter extends ChatProtocolAdapter {
 
     this.subscriptionActive = true;
 
+    // First, load any cached gift wraps from EventStore (persisted to Dexie)
+    // This is critical for cold start scenarios
+    await this.loadCachedGiftWraps(pubkey);
+
     // Subscribe to eventStore.insert$ to catch gift wraps added locally (e.g., after sending)
     // This is critical for immediate display of sent messages
     const insertSub = eventStore.insert$.subscribe((event) => {
@@ -724,6 +729,37 @@ export class Nip17Adapter extends ChatProtocolAdapter {
     this.subscriptions.set(conversationId, relaySub);
   }
 
+  /**
+   * Load cached gift wraps from Dexie (persistent storage)
+   * This is called on cold start to restore previously received gift wraps
+   * We query Dexie directly because EventStore is in-memory and empty on cold start
+   */
+  private async loadCachedGiftWraps(pubkey: string): Promise<void> {
+    try {
+      // Query Dexie directly for cached gift wraps addressed to this user
+      // EventStore is in-memory only, so on cold start it's empty
+      const cachedGiftWraps = await getEventsForFilters([
+        { kinds: [GIFT_WRAP_KIND], "#p": [pubkey] },
+      ]);
+
+      if (cachedGiftWraps.length > 0) {
+        console.log(
+          `[NIP-17] Loading ${cachedGiftWraps.length} cached gift wrap(s) from Dexie`,
+        );
+        for (const giftWrap of cachedGiftWraps) {
+          // Add to EventStore so other parts of the app can access it
+          eventStore.add(giftWrap);
+          // Handle in adapter state
+          this.handleGiftWrap(giftWrap);
+        }
+      } else {
+        console.log("[NIP-17] No cached gift wraps found in Dexie");
+      }
+    } catch (error) {
+      console.warn("[NIP-17] Failed to load cached gift wraps:", error);
+    }
+  }
+
   /**
    * Handle a received or sent gift wrap
    */