Import december-2020-12-18 from private repo (scrubbed 2026-05-27)

Targets Rec Room 2020.12.18 client.

Re-import after adding:
- DorkNet.ClientMod/dorknet-clientmod.json.template — config schema
  the launcher's manifest-driven patcher renders into UserData/.
- tools/build-patcher-zip.ps1 — produces the dorknet-clientpatch-{key}.zip
  Release asset the launcher fetches.
- .github/workflows/release.yml — auto-publishes both Release assets
  on v1-december-* tag push.

Scrubbed via maintainer-side scrub-for-public.ps1: same drop rules as
the prior import, plus build-patcher-zip.ps1 added to the tools/
allow-list so it survives the scrub.

DorkNet.Models/Notification/PushNotification.cs

@@ -0,0 +1,65 @@
+using System.Text.Json.Serialization;
+
+namespace DorkNet.Models.Notification;
+
+public class PushNotification
+{
+    [JsonPropertyName("Id")]
+    public PushNotificationId Id { get; set; }
+
+    [JsonPropertyName("Msg")]
+    public object? Msg { get; set; }
+}
+
+/// <summary>
+/// Mirrors the client's <c>RecNet.Notifications+PushNotificationId</c>
+/// enum exactly (decompiled at
+/// <c>Cpp2IL_CS/.../RecNet/Notifications.cs:52-89</c>). Values are
+/// non-contiguous because the client allocates them in groups (1–6
+/// core; 11–15 subscriptions; 20–25 moderation; 30–31 gifts;
+/// 60–62 storefronts; 70–71 consumables; 80–85 events; 90 chat;
+/// 95–96 community board; 100 inventions).
+///
+/// Server <c>NotifyAsync(playerId, id)</c> pushes raise an event with
+/// this int value over the SignalR hub. If the value doesn't match
+/// what the client expects for a given concept, the push is silently
+/// dropped — match the client byte-for-byte.
+/// </summary>
+public enum PushNotificationId
+{
+    RelationshipChanged = 1,
+    MessageReceived = 2,
+    MessageDeleted = 3,
+    PresenceHeartbeatResponse = 4,
+    RefreshLogin = 5,
+    Logout = 6,
+    SubscriptionUpdateProfile = 11,
+    SubscriptionUpdatePresence = 12,
+    SubscriptionUpdateGameSession = 13,
+    SubscriptionUpdateRoom = 15,
+    ModerationQuitGame = 20,
+    ModerationUpdateRequired = 21,
+    ModerationKick = 22,
+    ModerationKickAttemptFailed = 23,
+    ModerationRoomBan = 24,
+    ServerMaintenance = 25,
+    GiftPackageReceived = 30,
+    GiftPackageReceivedImmediate = 31,
+    ProfileJuniorStatusUpdate = 40,
+    RelationshipsInvalid = 50,
+    StorefrontBalanceAdd = 60,
+    StorefrontBalanceUpdate = 61,
+    StorefrontBalancePurchase = 62,
+    ConsumableMappingAdded = 70,
+    ConsumableMappingRemoved = 71,
+    PlayerEventCreated = 80,
+    PlayerEventUpdated = 81,
+    PlayerEventDeleted = 82,
+    PlayerEventResponseChanged = 83,
+    PlayerEventResponseDeleted = 84,
+    PlayerEventStateChanged = 85,
+    ChatMessageReceived = 90,
+    CommunityBoardUpdate = 95,
+    CommunityBoardAnnouncementUpdate = 96,
+    InventionModerationStateChanged = 100,
+}