Teams-style chat list, contact name resolution, and fixes

UI:
- Rework the conversation list to a Teams/Outlook-style row: single-line
  preview, right-aligned timestamp, unread dot, and a neutral elevated
  rounded fill (drawn by a Border that wraps the whole row) for hover/select.
- Smooth the Chats/Calls/Stories rail indicator by suppressing the content
  frame's transition, which competed with the indicator animation.

Contact names:
- Fetch + decrypt Signal profile names (ProfileCipher, ProfileService,
  ProfileNameStore, GET /v1/profile) when a peer has no synced name.
- Capture each contact's profileKey from the link'n'sync backup and the
  contacts sync (un-reserve ContactDetails.profileKey) so names can be
  resolved; fall back to the phone number before a raw ACI.

Other:
- Report the device to Signal as "Wingnal: {machine name}".
- Resolve build warnings: target Wingnal.Service at net8.0-windows (CA1416),
  initialize zkgroup credential fields (CS8618), hoist a stackalloc (CA2014).
- Skip the live chat-connect diagnostic test by default (it logged in as the
  real account and disconnected the app).
- Bump app version 1.0.1.0 -> 1.0.2.0.

Wingnal.Service/Sync/BackupImporter.cs

@@ -18,12 +18,15 @@ public sealed class BackupImporter
 {
     private readonly MessageStore _messages;
     private readonly ContactsStore _contacts;
+    private readonly ProfileKeyStore? _profileKeys;
     private readonly string _ownAci;
 
-    public BackupImporter(MessageStore messages, ContactsStore contacts, string ownAci)
+    public BackupImporter(MessageStore messages, ContactsStore contacts, string ownAci,
+        ProfileKeyStore? profileKeys = null)
     {
         _messages = messages;
         _contacts = contacts;
+        _profileKeys = profileKeys;
         _ownAci = ownAci.ToLowerInvariant();
     }
 
@@ -56,6 +59,13 @@ public sealed class BackupImporter
                     recipients[r.Id] = new ResolvedPeer(aci, name);
                     string? number = r.Contact.E164 != 0 ? "+" + r.Contact.E164 : null;
                     _contacts.Upsert(new StoreContact(aci, number, name, InboxPosition: 0));
+                    // Keep the profile key so an un-named contact's profile name can still be fetched
+                    // and decrypted later (the modern contacts sync no longer carries these).
+                    if (_profileKeys is not null && r.Contact.HasProfileKey)
+                    {
+                        byte[] pk = r.Contact.ProfileKey.ToByteArray();
+                        if (pk.Length == 32) _profileKeys.Store(aci, pk);
+                    }
                     contactCount++;
                     break;
                 default:

Wingnal.Service/Sync/MessageHistoryImporter.cs

@@ -24,13 +24,16 @@ public sealed class MessageHistoryImporter
     private readonly SignalRestClient _rest;
     private readonly MessageStore _messages;
     private readonly ContactsStore _contacts;
+    private readonly ProfileKeyStore? _profileKeys;
 
-    public MessageHistoryImporter(SignalAccount account, SignalRestClient rest, MessageStore messages, ContactsStore contacts)
+    public MessageHistoryImporter(SignalAccount account, SignalRestClient rest, MessageStore messages,
+        ContactsStore contacts, ProfileKeyStore? profileKeys = null)
     {
         _account = account;
         _rest = rest;
         _messages = messages;
         _contacts = contacts;
+        _profileKeys = profileKeys;
     }
 
     /// <param name="ShouldRetry">True when the failure was transient (timed out / network / parse error)
@@ -80,7 +83,7 @@ public sealed class MessageHistoryImporter
 
             MessageBackupKey key = BackupKey.ForLinkAndSync(ephemeral, aci);
             BackupContents backup = BackupReader.Read(file, key);
-            BackupImporter.ImportSummary summary = new BackupImporter(_messages, _contacts, _account.Aci).Import(backup);
+            BackupImporter.ImportSummary summary = new BackupImporter(_messages, _contacts, _account.Aci, _profileKeys).Import(backup);
 
             FileLog.Write($"link'n'sync: imported {summary.Messages} message(s), {summary.Contacts} contact(s)");
             return new Result(true, summary, $"imported {summary.Messages} messages, {summary.Contacts} contacts");