fix: answer 2023 room and playlist mutations with the success/value/error envelope

Every rooms-client mutation (roles, invite, accessibility/publish, room
fields, sub-room ops, permissions, playlists) goes through
NLDBPDCNNCF.BDBHCEGKGDC<TResult>, the same helper and instantiation as
"clone room", which reads {success, value, error}. A bare room-details body
has no success, so the client rejected it with the message-less
"Exception of type 'CEMNLBKJABA' was thrown" (seen on co-owner invite)
although the server had applied the change.

RecNetEnvelopeAttribute wraps those handlers: 2xx becomes
{success:true, value, error:""}, refusals become 200
{success:false, value:null, error:<message>}.

DorkNet.Server/Controllers/API/Rooms/V2/RoomsModerationController.cs

@@ -501,6 +501,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/description")]
     [HttpPut("roomserver/rooms/{roomId:long}/description")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareDescription(long roomId)
     {
         // RawValue, not the whitespace-skipping reader: clearing the
@@ -520,6 +521,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/image")]
     [HttpPut("roomserver/rooms/{roomId:long}/image")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareImage(long roomId)
     {
         var payload = await ReadPayloadAsync();
@@ -541,6 +543,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/tags")]
     [HttpPut("roomserver/rooms/{roomId:long}/tags")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareTags(long roomId)
     {
         var payload = await ReadPayloadAsync();
@@ -567,6 +570,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/accessibility")]
     [HttpPut("roomserver/rooms/{roomId:long}/accessibility")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareAccessibility(long roomId)
     {
         var value = await ReadBareIntAsync("accessibility", "Accessibility", "value", "Value");
@@ -899,6 +903,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/cloning")]
     [HttpPut("roomserver/rooms/{roomId:long}/cloning")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareCloning(long roomId)
     {
         var value = await ReadBareBoolAsync("cloningAllowed", "CloningAllowed", "value", "Value");
@@ -918,6 +923,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/automute")]
     [HttpPut("roomserver/rooms/{roomId:long}/automute")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareAutomute(long roomId)
     {
         var value = await ReadBareBoolAsync("disable", "Disable", "DisableMicAutoMute", "value", "Value");
@@ -939,6 +945,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/restrictions")]
     [HttpPut("roomserver/rooms/{roomId:long}/restrictions")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareRestrictions(long roomId)
     {
         var payload = await ReadPayloadAsync();
@@ -965,6 +972,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/warning")]
     [HttpPut("roomserver/rooms/{roomId:long}/warning")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareWarning(long roomId)
     {
         var payload = await ReadPayloadAsync();
@@ -983,6 +991,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/creator")]
     [HttpPut("roomserver/rooms/{roomId:long}/creator")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareCreator(long roomId)
     {
         var creatorId = await ReadBareLongAsync(
@@ -1001,6 +1010,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/allow_new_users")]
     [HttpPut("roomserver/rooms/{roomId:long}/allow_new_users")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareAllowNewUsers(long roomId)
     {
         var value = await ReadBareBoolAsync("allowNewUsers", "AllowNewUsers", "value", "Value");
@@ -1015,6 +1025,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/min_level")]
     [HttpPut("roomserver/rooms/{roomId:long}/min_level")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareMinLevel(long roomId)
     {
         var value = await ReadBareIntAsync("minLevel", "MinLevel", "level", "Level", "value", "Value");
@@ -1029,6 +1040,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/max_player_calculation_mode")]
     [HttpPut("roomserver/rooms/{roomId:long}/max_player_calculation_mode")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareMaxPlayerCalculationMode(long roomId)
     {
         var value = await ReadBareIntAsync(
@@ -1054,6 +1066,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/loadscreen")]
     [HttpPut("roomserver/rooms/{roomId:long}/loadscreen")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareLoadScreen(long roomId)
     {
         var payload = await ReadPayloadAsync();
@@ -1085,6 +1098,7 @@ public class RoomsModerationController(
     [HttpDelete("rooms/{roomId:long}/loadscreen")]
     [HttpDelete("roomserver/rooms/{roomId:long}/loadscreen")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareLoadScreenRemove(long roomId)
     {
         var imageName = await ReadStringValueAsync("imageName", "ImageName", "name", "Name", "value", "Value")
@@ -1121,6 +1135,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/promo_images")]
     [HttpPut("roomserver/rooms/{roomId:long}/promo_images")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BarePromoImagesAdd(long roomId)
     {
         var image = await ReadStringValueAsync("imageName", "ImageName", "name", "Name", "value", "Value");
@@ -1137,6 +1152,7 @@ public class RoomsModerationController(
     [HttpDelete("rooms/{roomId:long}/promo_images")]
     [HttpDelete("roomserver/rooms/{roomId:long}/promo_images")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BarePromoImagesRemove(long roomId)
     {
         var image = await ReadStringValueAsync("imageName", "ImageName", "name", "Name", "value", "Value");
@@ -1167,6 +1183,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/promo_external")]
     [HttpPut("roomserver/rooms/{roomId:long}/promo_external")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BarePromoExternalAdd(long roomId)
     {
         var payload = await ReadPayloadAsync();
@@ -1197,6 +1214,7 @@ public class RoomsModerationController(
     [HttpDelete("rooms/{roomId:long}/promo_external")]
     [HttpDelete("roomserver/rooms/{roomId:long}/promo_external")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BarePromoExternalRemove(long roomId)
     {
         var payload = await ReadPayloadAsync();
@@ -1275,6 +1293,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/voice_chat_encryption")]
     [HttpPut("roomserver/rooms/{roomId:long}/voice_chat_encryption")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareAck(long roomId) =>
         await ApplyAndReturn(roomId, _ => { /* value not persistable: no column */ });
 
@@ -1305,6 +1324,7 @@ public class RoomsModerationController(
     [HttpPost("roomserver/rooms/{roomId:long}/modify")]
     [HttpPut("roomserver/rooms/{roomId:long}/modify")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
+    [RecNetEnvelope]
     public async Task<IActionResult> BareModify(long roomId)
     {
         var payload = await ReadPayloadAsync();
@@ -1914,7 +1934,13 @@ public class RoomsModerationController(
     /// <see cref="BareClone"/>). The slim RoomService.ToWireRoom has no
     /// SubRooms/Roles/Tags/LoadScreens/PromoImages/DataBlob, so the strict
     /// reader's dispose-walk NRE'd on the missing nested lists and every
-    /// mutation reported failure even though it had persisted.</summary>
+    /// mutation reported failure even though it had persisted.
+    ///
+    /// <para>That helper is <c>NLDBPDCNNCF.BDBHCEGKGDC&lt;TResult&gt;</c>, the
+    /// <c>{success, value, error}</c> envelope reader, so the details are the
+    /// envelope's <c>value</c>: every caller carries
+    /// <see cref="Controllers.RecNetEnvelopeAttribute"/>. A bare details body
+    /// fails with "Exception of type 'CEMNLBKJABA' was thrown."</para></summary>
     private async Task<object> BuildRoomDetailsAsync(RoomEntity room)
     {
         var scenes = await db.RoomScenes