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/Controllers/API/Announcements/AnnouncementsController.cs

@@ -0,0 +1,45 @@
+using Microsoft.AspNetCore.Mvc;
+using DorkNet.Server.Services;
+
+namespace DorkNet.Server.Controllers.API.Announcements;
+
+/// <summary>
+/// api.{rec.net,localhost}/api/announcement/v{1,2}/get — fetches the
+/// current server announcement (shown on the watch's home tab). The
+/// payload is sourced from <see cref="CommunityBoardService"/> so the
+/// admin SPA's "edit announcement" form is the single place to
+/// update what players see.
+///
+/// Wire shape per <c>RecNet/AnnouncementDTO.cs</c> — AnnouncementId,
+/// AnnouncementType, LinkType, Platform are all required via
+/// <c>Util.GetKey</c> (throws on miss); Title/Body/ImageName/LinkName/
+/// LinkUri/CreatedAt are GetKeyOrDefault.
+/// </summary>
+[ApiController]
+public class AnnouncementsController(CommunityBoardService communityBoard) : ControllerBase
+{
+    [HttpGet("api/announcement/v1/get")]
+    [HttpGet("api/announcement/v2/get")]
+    public async Task<IActionResult> Current()
+    {
+        var board = await communityBoard.GetAsync();
+        var ann = board.CurrentAnnouncement;
+        if (ann is null) return Ok(Array.Empty<object>());
+        return Ok(new[]
+        {
+            new
+            {
+                AnnouncementId = 1L,
+                AnnouncementType = 0,
+                Title = "Server Announcement",
+                Body = ann.Message ?? string.Empty,
+                ImageName = "",
+                LinkType = 0,
+                LinkName = "",
+                LinkUri = ann.MoreInfoUrl ?? string.Empty,
+                Platform = 0,
+                CreatedAt = DateTime.UtcNow,
+            }
+        });
+    }
+}