fix: correct 2023-03-21 client wire contracts across the API and notify surfaces

Audits every route the March-2023 client can call against what this server
actually serves, and fixes the defects that were breaking gameplay. Adds
docs/recroom-2023-client-api-complete.md as the reference: ~500 route
literals across 13 subsystems, with verb, request/response shape, and a
per-subsystem diff. 315 defects catalogued; the ones fixed here are listed
in its "Already fixed" table.

Path coverage was never the problem — 465 of 506 routes already had
handlers. The failures were in shape, and they cluster into four causes:

- Wrong verb. The verb is a BestHTTP.HTTPMethods ordinal (GET=0 .. PATCH=5),
  confirmed from that enum's static constructor. Routes registered POST-only
  while the client PUTs returned 405, which made room consumables neither
  buyable nor consumable and blocked every room-key edit.
- Bare scalar wrapped in an object. The client reads `1000`, not
  `{"Limit":1000}`; the issuing method signature says which. Wrapping makes
  the deserializer throw and the feature dies silently.
- [FromBody] vs form-urlencoded. The client sends nearly every write as form
  data, which an [ApiController] action bound [FromBody] rejects with 415
  before the handler runs. This alone broke all 13 club member-management
  endpoints. Adds Binding/FormOrJsonModelBinder so this is fixed once.
- Notify dispatch keys. Both enum overloads of the client's RegisterHandler
  lower the id via Int32.ToString() and register only that numeric key, and
  lookup is a case-sensitive TryGetValue that returns silently on a miss. We
  were sending the enum NAME for most ids, so friend-request updates, forced
  logout, maintenance broadcasts, live balance and consumable updates, and
  invention moderation pushes all evaporated with no error anywhere.

Notable behavioural bugs fixed:

- Editing a club announcement deleted it: PUT was a third binding on the
  delete handler. Split apart, and the missing create route added.
- leaderboard/CheckAndSetStat did not exist. The 2023 client has no SetStat
  literal at all, so every leaderboard score it wrote was discarded.
- Setting a club clubhouse cleared it: the handler read roomId from the query
  while the client sends it in the body, then wrote the resulting null.
- Club join requests were inverted (the enum is Open=0, InviteOnly=1,
  AskToJoin=2), so ask-to-join clubs rejected everyone and invite-only clubs
  quietly admitted them.
- Room bans were pushed as id 24, for which the client registers no handler;
  they now go out as ModerationKick with IsBan, so the ban takes effect
  immediately instead of at next login.
- Room-key ownership queries answered for the wrong player, and "has anyone
  bought this key" asked "did I buy it" — always false for the creator.

Also persists settings that were previously acknowledged and dropped
(playlist accessibility/restrictions/level-voting/warning, per-player status
visibility, VR movement mode and avoid-juniors, custom room codes), which is
what the new columns in the migration are for.

One test asserted the old nested PriceAndCurrency response shape; the
client's consumable formatter has no such key and reads Price and
PurchaseCurrencyId flat, so the test was corrected alongside the handler.

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

@@ -304,7 +304,11 @@ public class RoomsController(
     /// </summary>
     [HttpGet("api/rooms/v2/baserooms")]
     [HttpGet("api/rooms/v3/baserooms")]
+    // The 2023 client issues this from NLDBPDCNNCF, whose requests all carry
+    // the roomserver/ prefix in this deployment — without the twin the base/AG
+    // room list 404s and the room browser's base section is empty.
     [HttpGet("rooms/base")]
+    [HttpGet("roomserver/rooms/base")]
     public async Task<IActionResult> BaseRooms()
     {
         var names = await serverSettings.GetBaseRoomNamesAsync();
@@ -2532,7 +2536,9 @@ public class RoomsController(
     /// <c>api/rooms/v3/featured</c>). Returning the
     /// <see cref="Featured"/> shape here throws KeyNotFoundException on
     /// the watch's group-id lookup.</summary>
+    // Same roomserver/ prefix requirement as rooms/base.
     [HttpGet("featuredrooms/current")]
+    [HttpGet("roomserver/featuredrooms/current")]
     public async Task<IActionResult> FeaturedRoomsCurrent()
     {
         var ids = await rooms.FeaturedAgRoomIdsAsync(12);
@@ -2540,10 +2546,22 @@ public class RoomsController(
             .Where(r => ids.Contains(r.Id))
             .ToListAsync();
         var byId = featuredRooms.ToDictionary(r => r.Id);
+        // The featured-tile reader looks for RoomName, which ToWireRoom does not
+        // emit — every tile's caption came back null. Re-project the wire object
+        // into a dictionary so the extra key sits alongside the real ones rather
+        // than nesting them.
         var wireRooms = ids
-            .Select(id => byId.TryGetValue(id, out var room) ? RoomService.ToWireRoom(room) : null)
-            .Where(room => room is not null)
-            .Cast<object>()
+            .Where(byId.ContainsKey)
+            .Select(id =>
+            {
+                var room = byId[id];
+                var wire = RoomService.ToWireRoom(room);
+                var map = new Dictionary<string, object?>();
+                foreach (var prop in wire.GetType().GetProperties())
+                    map[prop.Name] = prop.GetValue(wire);
+                map["RoomName"] = room.Name;
+                return (object)map;
+            })
             .ToList();
         return Ok(new
         {