fix: presence, profile edits, outfit menu and RecNetResult writes for the 2023 client

Every change below was checked against the 2023-03-21 client disassembly;
file:line evidence is in the code comments and in
docs/recroom-2023-client-api-complete.md.

Presence
- matchmake/none means "online, in no room" (its only caller is
  TryGoToOfflineRoom, which ignores the reply). The server used to keep the
  old room or invent a dorm, so the next heartbeat looked out of sync and
  the client cancelled its load to chase that room.
- The join watchdog no longer clears presence 30 s into a long room load;
  it is a 3 minute backstop that drops the room only.
- One fan-out (PresenceBroadcastService) for every transition: deferred
  joins, matchmake/none, logout, failed joins, visibility changes, SignalR
  connect/disconnect. isOnline is sent on its own; pushes never go to the
  subject, because a self push moves the player.
- Online-status visibility (Public / Friends / Favorites / Appear offline)
  is stored and honoured by GET /player and by the live pushes.

Profile
- PUT account/me/{emoji,personalpronouns,identityflags,bannerimage} were
  404; added with the client's real form keys and persisted (new Players
  columns plus migration). Every account read now returns them, and edits
  push AccountUpdate to everyone.

Outfit menu
- Saved outfits kept OutfitSelectionsV2 and CustomAvatarItems, so loading a
  slot restores what was saved instead of a stale outfit.
- isCreationAllowedForAccount answers the {Success, Error} envelope the
  client parses; minPriceForPublicItem is a bare int; gifts/generate accepts
  form bodies; lockeditems returns the full owned-item shape; colourways no
  longer share their base item's AvatarItemId.

RecNetResult writes
- About 40 writes look status-only but parse the body as {Success, Error}.
  An empty 200 showed "Failed to ..." after the server applied the change,
  and a body without Success threw "Error message cannot be null". Clubs,
  announcements, keepsakes, comments/read, subscriptions, purchase offers
  and privacy settings now answer RecNetResult.
- Login token and device-code grants are real; remoteauth approves the
  device code; createlogintoken returns a bare string.
- New: incentivizedreferrals/referrals, account/bulk/{email,phone},
  GET strings, account/me/confirmphone, PlayMenuCarouselOrdering_1.
  Route inventory and coverage test extended to match.

README now describes the 2023 branch.

DorkNet.Server/Controllers/API/Comments/CommentsController.cs

@@ -268,8 +268,11 @@ public class CommentsController(DorkNetDbContext db) : ControllerBase
     /// <see cref="UnreadCounts"/> return non-zero numbers for everyone else).
     ///
     /// <c>OPELMBNJHNO.MCOIDIBFHIP(Int64 roomId, Int64 commentId)</c>
-    /// (OPELMBNJHNO.txt:1375) returns the status-only <c>LDGADANDBIO</c>, not a
-    /// DTO — the body is never parsed, only the status code. Verb is <b>PUT</b>
+    /// (OPELMBNJHNO.txt:1375) returns the untyped <c>LDGADANDBIO</c> promise, but
+    /// it is built from the body parsed as a RecNetResult: the continuation
+    /// <c>&lt;UpdateLatestReadComment&gt;b__9_1(DJMHAFPGLLN)</c>
+    /// (OPELMBNJHNO_NestedType___c.txt:333) null-derefs an empty body and
+    /// rejects on <c>Success</c>=false — see <see cref="RecNetResults"/>. Verb is <b>PUT</b>
     /// (rdx=3 at instr 059, OPELMBNJHNO.txt:1637); both ids are path segments
     /// formatted into "comments/read/{0}/{1}" (:1627) and no field is added, so
     /// the request carries no body at all.
@@ -280,7 +283,7 @@ public class CommentsController(DorkNetDbContext db) : ControllerBase
     {
         await SetLastReadAsync(Me, roomId, commentId);
         await db.SaveChangesAsync();
-        return Ok();
+        return RecNetResults.Ok();
     }
 
     /// <summary>Deletes a comment.