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.Server/Data/Entities/PlayerEventEntity.cs

@@ -0,0 +1,42 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace DorkNet.Server.Data.Entities;
+
+/// <summary>
+/// A player-scheduled gathering ("event") in a specific room. Backs
+/// the watch's Events tab — players can RSVP via
+/// <see cref="PlayerEventResponseEntity"/>.
+/// </summary>
+public class PlayerEventEntity
+{
+    public long Id { get; set; }
+
+    public long CreatorPlayerId { get; set; }
+    public long RoomId { get; set; }
+
+    [MaxLength(128)]
+    public string Title { get; set; } = string.Empty;
+
+    [MaxLength(2000)]
+    public string Description { get; set; } = string.Empty;
+
+    public DateTime StartsAt { get; set; }
+    public DateTime EndsAt { get; set; }
+
+    public int Capacity { get; set; } = 0;
+
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+}
+
+/// <summary>One row per RSVP'd player + event.</summary>
+public class PlayerEventResponseEntity
+{
+    public long Id { get; set; }
+    public long EventId { get; set; }
+    public long PlayerId { get; set; }
+    /// <summary>0=Going, 1=Maybe, 2=NotGoing — matches the watch's
+    /// three-state RSVP toggle.</summary>
+    public int Response { get; set; }
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+}