fix(chat): auto-rotate stuck conv-keys on chat open (receive-side recovery)

apps/desktop/src/lib/useConversationMessages.ts

@@ -5,12 +5,12 @@ import {
   decryptMessages,
   encryptAndUploadAttachment,
   fetchConversationMessages,
+  getOrCreateConvKey,
   insertAttachmentRow,
   MAX_ATTACHMENT_BYTES,
   type MessageWithCipher,
   sendEncryptedMessage,
   shareConvKeyToUser,
-  tryGetConvKey,
 } from '@chat-app/shared/chat';
 import { bytesToPgHex, pgBytesToBytes } from '@chat-app/shared/supabase';
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
@@ -154,8 +154,24 @@ export function useConversationMessages({ conversationId, userId, deviceId }: Ar
         // db-types snapshot predates the active_key_version column; cast via unknown.
         const version = (convRow as unknown as { active_key_version: number }).active_key_version;
 
-        const handle = await tryGetConvKey(supabase, conversationId, userId, priv, version);
-        if (!handle || cancelled) return;
+        // Use `getOrCreateConvKey` rather than `tryGetConvKey` so that if we
+        // can't unwrap our bundle at the active version (we lost the device
+        // key, or the bundle was wiped by the 0.18.0 reset_user_key bug, or
+        // we only ever had a legacy `recipient_device_id` row), the helper
+        // auto-rotates the conv-key to version+1 and wraps fresh bundles
+        // for every member with a `user_keys` row. This is the only path
+        // that recovers stuck-legacy conversations on the receive side —
+        // `tryGetConvKey` just returned null and left the chat permanently
+        // un-decryptable for the locked-out party.
+        const handle = await getOrCreateConvKey(supabase, conversationId, {
+          userId,
+          privateKey: priv,
+        });
+        if (cancelled) return;
+        // If the helper rotated, all current members with a `user_keys`
+        // public key were already wrapped by `rotateConvKey`. No further
+        // sweep work is needed.
+        if (handle.keyVersion > version) return;
 
         const { data: members, error: mErr } = await supabase
           .from('conversation_members')