feat: Add support for 2018 client API endpoints and data models

- Implemented new search endpoints for rooms to accommodate the 2018 client.
- Added support for retrieving room details and featured rooms in a format compatible with the 2018 client.
- Introduced new data models for login responses and player presence specific to the 2018 client.
- Created mappers to convert between internal entities and the 2018 wire formats for players and rooms.
- Updated existing storefront APIs to include versioned endpoints for the 2018 client.
- Enhanced the version controller to return dual-format responses for compatibility with both 2018 and 2020 clients.
- Refactored the configuration service to ensure trailing slashes in URLs for the 2018 client.

DorkNet.Models/Auth/Login2018.cs

@@ -0,0 +1,118 @@
+using System.Text.Json.Serialization;
+
+namespace DorkNet.Models.Auth;
+
+// ── June-2018 (build 20180621_EA) login wire shapes ──────────────────────────
+//
+// The 2018 client speaks a DIFFERENT login protocol than the 2019/2020 OAuth
+// flow the rest of DorkNet implements:
+//   • POST api/platformlogin/v1/{loginaccount,logincached,createaccount}
+//   • request body is a JSON object (Unity JsonUtility / LitJson), NOT form
+//   • response is the "login envelope" below, read by RecNet.cs:40014-40021
+//     via case-sensitive LitJson keys.
+//
+// Keys verified from the assembly's REAL (name-preserved) Deserialize methods
+// via dnlib — the obfuscated-name sibling methods are Beebyte decoys with
+// scrambled literals (see project_2018_mono_obfuscation memory).
+
+/// <summary>
+/// Login response envelope. RecNet login-response Deserialize (RecNet.cs:40016-40020)
+/// reads: Error (req string), Player (optional object), Token (req string),
+/// FirstLoginOfTheDay (req bool), AnalyticsSessionId (req long). Empty Error
+/// means success; a non-empty Error is shown to the user and aborts login.
+/// </summary>
+public class Login2018Response
+{
+    [JsonPropertyName("Error")]
+    public string Error { get; set; } = string.Empty;
+
+    [JsonPropertyName("Player")]
+    public Player2018? Player { get; set; }
+
+    [JsonPropertyName("Token")]
+    public string Token { get; set; } = string.Empty;
+
+    [JsonPropertyName("FirstLoginOfTheDay")]
+    public bool FirstLoginOfTheDay { get; set; }
+
+    [JsonPropertyName("AnalyticsSessionId")]
+    public long AnalyticsSessionId { get; set; }
+}
+
+/// <summary>
+/// 2018 player object embedded in the login envelope and returned bare from
+/// getcachedlogins. Keys + required/optional verified from RecNet.cs:64632-64667
+/// (RecNet.EEBPLECPEGD.Deserialize):
+///   REQUIRED (Util.GetKey throws if missing): Id, Username, DisplayName, XP,
+///     Level, RegistrationStatus, Developer, CanReceiveInvites, ProfileImageName,
+///     JuniorProfile, ForceJuniorImages, PendingJunior, HasBirthday.
+///   OPTIONAL: Bio (TryGetKey), AvoidJuniors (ContainsKey-guarded),
+///     PlayerReputation/PlatformId (GetObjectKey -> null ok; omitted here),
+///     GroupMemberships (ContainsKey-guarded; omitted).
+/// NOTE the 2018 client uses "Id" (not "AccountId") and "Developer" (not
+/// "IsDeveloper") — distinct from the 2020 PlayerProfile DTO.
+/// </summary>
+public class Player2018
+{
+    [JsonPropertyName("Id")]
+    public long Id { get; set; }
+
+    [JsonPropertyName("Username")]
+    public string Username { get; set; } = string.Empty;
+
+    [JsonPropertyName("DisplayName")]
+    public string DisplayName { get; set; } = string.Empty;
+
+    [JsonPropertyName("Bio")]
+    public string Bio { get; set; } = string.Empty;
+
+    [JsonPropertyName("XP")]
+    public int XP { get; set; }
+
+    [JsonPropertyName("Level")]
+    public int Level { get; set; } = 1;
+
+    // Obfuscated enum in the dump; not a gate (the client just stores it). 3 is
+    // the "fully registered" value used elsewhere; verify against a live client
+    // if the signup flow re-appears for an existing account.
+    [JsonPropertyName("RegistrationStatus")]
+    public int RegistrationStatus { get; set; } = 3;
+
+    [JsonPropertyName("Developer")]
+    public bool Developer { get; set; }
+
+    [JsonPropertyName("CanReceiveInvites")]
+    public bool CanReceiveInvites { get; set; } = true;
+
+    [JsonPropertyName("ProfileImageName")]
+    public string ProfileImageName { get; set; } = string.Empty;
+
+    [JsonPropertyName("JuniorProfile")]
+    public bool JuniorProfile { get; set; }
+
+    [JsonPropertyName("ForceJuniorImages")]
+    public bool ForceJuniorImages { get; set; }
+
+    [JsonPropertyName("PendingJunior")]
+    public bool PendingJunior { get; set; }
+
+    [JsonPropertyName("HasBirthday")]
+    public bool HasBirthday { get; set; }
+
+    [JsonPropertyName("AvoidJuniors")]
+    public bool AvoidJuniors { get; set; }
+}
+
+/// <summary>
+/// Generic 2018 success envelope {Success, Message} (RecNet EFDOILDKBFK) used by
+/// registeraccount (email attach) and other simple POSTs. Note the key is
+/// "Message" (not "error").
+/// </summary>
+public class SuccessMessage2018
+{
+    [JsonPropertyName("Success")]
+    public bool Success { get; set; }
+
+    [JsonPropertyName("Message")]
+    public string Message { get; set; } = string.Empty;
+}

DorkNet.Models/Config/RecRoomConfig.cs

@@ -50,13 +50,34 @@ public class RecRoomConfig
     [JsonPropertyName("DailyObjectives")]
     public List<List<DailyObjective>> DailyObjectives { get; set; } = DailyObjective.DefaultSets();
 
-    [JsonPropertyName("ConfigTable")]
+    // 2018.06 client (RecNet.OPOHNGAOCCD.Deserialize, RecNet.cs:9062-9068) reads
+    // ConfigTable as an ARRAY of {Key,Value} objects, NOT a JSON object map:
+    //   foreach elem in dict["ConfigTable"]: table[elem["Key"]] = elem["Value"]
+    // The 2020 client read it as an object — but this branch targets 2018, so we
+    // emit the array form. Keep the settable Dictionary for existing call sites
+    // (ConfigService.GetConfig populates it) and project to the wire array.
+    [JsonIgnore]
     public Dictionary<string, string> ConfigTable { get; set; } = [];
 
+    [JsonPropertyName("ConfigTable")]
+    public List<ConfigTableEntry> ConfigTableWire =>
+        ConfigTable.Select(kv => new ConfigTableEntry { Key = kv.Key, Value = kv.Value }).ToList();
+
     [JsonPropertyName("ServiceUrls")]
     public Dictionary<string, string> ServiceUrls { get; set; } = [];
 }
 
+// 2018 ConfigTable element shape: {"Key": "...", "Value": "..."} (PascalCase,
+// LitJson Util.GetKey<string>("Key"/"Value")).
+public class ConfigTableEntry
+{
+    [JsonPropertyName("Key")]
+    public string Key { get; set; } = string.Empty;
+
+    [JsonPropertyName("Value")]
+    public string Value { get; set; } = string.Empty;
+}
+
 public class PhotonConfig
 {
     [JsonPropertyName("AppId")]

DorkNet.Models/Players/Presence2018.cs

@@ -0,0 +1,21 @@
+using System.Text.Json.Serialization;
+
+namespace DorkNet.Models.Players;
+
+/// <summary>
+/// June-2018 presence record returned from POST api/presence/v2/list.
+/// Keys verified from RecNet.DBHHFILLFLC.Deserialize: PlayerId (long),
+/// IsOnline (bool), GameSession (optional object — null when the player is
+/// online but not in a session; the client null-checks it).
+/// </summary>
+public class Presence2018
+{
+    [JsonPropertyName("PlayerId")]
+    public long PlayerId { get; set; }
+
+    [JsonPropertyName("IsOnline")]
+    public bool IsOnline { get; set; }
+
+    [JsonPropertyName("GameSession")]
+    public object? GameSession { get; set; }
+}

DorkNet.Models/Rooms/Room2018.cs

@@ -0,0 +1,48 @@
+using System.Text.Json.Serialization;
+
+namespace DorkNet.Models.Rooms;
+
+/// <summary>
+/// Flat June-2018 room object. The 2018 client (RecNet Room.Deserialize,
+/// RecNet.cs:78244) reads these keys directly off the room JSON — there is NO
+/// 2020-style RoomDetails/Scenes wrapper; DataBlobName + PersonalDetails are
+/// embedded right here. Required keys throw (Util.GetKey) if missing, so every
+/// field below must be present except the genuinely-optional ones noted.
+///
+/// Notes:
+///  • CreatorPlayerId is read as an int client-side; all account ids fit int.
+///  • Date keys are ISO-8601 (client DateTimeParse.ParseISO8601). Use real
+///    dates, never year-9999 (overflow — see WireDates).
+///  • ActivityLevelId parse failure is a non-fatal warning client-side, so ""
+///    is safe for non-activity rooms.
+///  • CoOwners/Hosts are int arrays (empty ok); PersonalDetails is an optional
+///    object (null ok).
+/// </summary>
+public class Room2018
+{
+    [JsonPropertyName("RoomId")] public long RoomId { get; set; }
+    [JsonPropertyName("Name")] public string Name { get; set; } = string.Empty;
+    [JsonPropertyName("Description")] public string Description { get; set; } = string.Empty;
+    [JsonPropertyName("CreatorPlayerId")] public long CreatorPlayerId { get; set; }
+    [JsonPropertyName("ImageName")] public string ImageName { get; set; } = string.Empty;
+    [JsonPropertyName("DataBlobName")] public string DataBlobName { get; set; } = string.Empty;
+    [JsonPropertyName("ActivityLevelId")] public string ActivityLevelId { get; set; } = string.Empty;
+    [JsonPropertyName("IsSandbox")] public bool IsSandbox { get; set; }
+    [JsonPropertyName("Instanced")] public bool Instanced { get; set; } = true;
+    [JsonPropertyName("MaxPlayers")] public int MaxPlayers { get; set; } = 20;
+    [JsonPropertyName("Accessibility")] public int Accessibility { get; set; } = 1;
+    [JsonPropertyName("AccessibilityLocked")] public bool AccessibilityLocked { get; set; }
+    [JsonPropertyName("VisitorCount")] public int VisitorCount { get; set; }
+    [JsonPropertyName("VisitCount")] public int VisitCount { get; set; }
+    [JsonPropertyName("CheerCount")] public int CheerCount { get; set; }
+    [JsonPropertyName("ReportCount")] public int ReportCount { get; set; }
+    [JsonPropertyName("State")] public int State { get; set; }
+    [JsonPropertyName("StateModifiedAt")] public DateTime StateModifiedAt { get; set; }
+    [JsonPropertyName("CreatedAt")] public DateTime CreatedAt { get; set; }
+    [JsonPropertyName("ModifiedAt")] public DateTime ModifiedAt { get; set; }
+    [JsonPropertyName("LastVisitedAt")] public DateTime LastVisitedAt { get; set; }
+    [JsonPropertyName("DataModifiedAt")] public DateTime DataModifiedAt { get; set; }
+    [JsonPropertyName("CoOwners")] public List<int> CoOwners { get; set; } = [];
+    [JsonPropertyName("Hosts")] public List<int> Hosts { get; set; } = [];
+    [JsonPropertyName("PersonalDetails")] public object? PersonalDetails { get; set; }
+}

DorkNet.Server/Compat2018/Player2018Mapper.cs

@@ -0,0 +1,30 @@
+using DorkNet.Models.Auth;
+using DorkNet.Server.Data.Entities;
+
+namespace DorkNet.Server.Compat2018;
+
+/// <summary>
+/// Maps a <see cref="PlayerEntity"/> to the June-2018 wire player object
+/// (<see cref="Player2018"/>). Lives in the server (not DorkNet.Models) because
+/// the DTO project can't reference the data-layer entity. Shared by the
+/// platformlogin/v1, players/v1, and presence controllers so the 2018 player
+/// shape is produced in exactly one place.
+/// Keys verified against RecNet.EEBPLECPEGD.Deserialize (RecNet.cs:64632).
+/// </summary>
+public static class Player2018Mapper
+{
+    public static Player2018 From(PlayerEntity p) => new()
+    {
+        Id = p.Id,
+        Username = p.Username,
+        DisplayName = string.IsNullOrEmpty(p.DisplayName) ? p.Username : p.DisplayName,
+        Bio = p.Bio ?? string.Empty,
+        XP = p.XP,
+        Level = p.Level,
+        Developer = p.IsDeveloper,
+        CanReceiveInvites = p.CanReceiveInvites,
+        ProfileImageName = p.ProfileImageName ?? string.Empty,
+        JuniorProfile = p.IsJunior,
+        HasBirthday = p.Birthday.HasValue,
+    };
+}

DorkNet.Server/Compat2018/Room2018Mapper.cs

@@ -0,0 +1,43 @@
+using DorkNet.Models.Rooms;
+using DorkNet.Server.Data.Entities;
+
+namespace DorkNet.Server.Compat2018;
+
+/// <summary>
+/// Maps a <see cref="RoomEntity"/> to the flat June-2018 wire room
+/// (<see cref="Room2018"/>). Server-side because DorkNet.Models can't reference
+/// the data entity. Some 2018 fields have no column (Instanced, MaxPlayers,
+/// ReportCount, ActivityLevelId) and get sensible defaults; IsSandbox is derived
+/// from IsAGRoom (official AG rooms are not sandbox/maker rooms).
+/// </summary>
+public static class Room2018Mapper
+{
+    public static Room2018 From(RoomEntity r) => new()
+    {
+        RoomId = r.Id,
+        Name = r.Name,
+        Description = r.Description,
+        CreatorPlayerId = r.CreatorPlayerId,
+        ImageName = r.ImageName,
+        DataBlobName = r.CurrentDataBlobName ?? string.Empty,
+        ActivityLevelId = string.Empty,
+        IsSandbox = !r.IsAGRoom,
+        Instanced = true,
+        MaxPlayers = 20,
+        Accessibility = r.Accessibility,
+        AccessibilityLocked = false,
+        VisitorCount = r.VisitorCount,
+        VisitCount = r.VisitCount,
+        CheerCount = r.CheerCount,
+        ReportCount = 0,
+        State = r.State,
+        StateModifiedAt = r.UpdatedAt,
+        CreatedAt = r.CreatedAt,
+        ModifiedAt = r.UpdatedAt,
+        LastVisitedAt = r.UpdatedAt,
+        DataModifiedAt = r.UpdatedAt,
+        CoOwners = [],
+        Hosts = [],
+        PersonalDetails = null,
+    };
+}

DorkNet.Server/Controllers/API/Avatar/V3/AvatarSavedOutfitsController.cs

@@ -26,6 +26,7 @@ public class AvatarSavedOutfitsController(DorkNetDbContext db) : ControllerBase
 {
     private const int MaxSlots = 20;
 
+    [HttpGet("api/avatar/v1/saved")]
     [HttpGet("api/avatar/v2/saved")]
     [HttpGet("api/avatar/v3/saved")]
     [HttpGet("api/avatar/v4/saved")]
@@ -39,6 +40,7 @@ public class AvatarSavedOutfitsController(DorkNetDbContext db) : ControllerBase
 
     /// <summary>POST <c>v3/saved/set</c> — upsert one outfit by Slot.
     /// Body is the SavedOutfit shape directly.</summary>
+    [HttpPost("api/avatar/v1/saved/set")]
     [HttpPost("api/avatar/v3/saved/set")]
     [HttpPost("api/avatar/v2/saved/set")]
     public async Task<IActionResult> Set([FromBody] SavedOutfitDto body)

DorkNet.Server/Controllers/API/Images/ImagesController.cs

@@ -68,6 +68,13 @@ public class ImagesController(
     [HttpPost("api/images/v3/uploadsaved")]
     [HttpPost("api/images/v4/uploadsaved")]
     [HttpPost("api/images/v5/uploadsaved")]
+    // 2018 flat-screen (non-VR) camera save posts a single 'image' part to
+    // uploadsavedsingle (RecNet.cs:35080); ReadImageBytesAsync already falls
+    // back to the first uploaded file, so the same handler serves it.
+    [HttpPost("api/images/v2/uploadsavedsingle")]
+    [HttpPost("api/images/v3/uploadsavedsingle")]
+    [HttpPost("api/images/v4/uploadsavedsingle")]
+    [HttpPost("api/images/v5/uploadsavedsingle")]
     [Authorize]
     public async Task<IActionResult> UploadSaved()
     {

DorkNet.Server/Controllers/API/Inventory/InventoryController.cs

@@ -71,27 +71,37 @@ public class InventoryController(
     /// <summary>POST <c>api/equipment/v1/update</c> — toggle the
     /// "favorited" flag on a piece of equipment (the watch lets the
     /// player pin commonly-used tools).</summary>
+    // The 2018 client posts a JSON ARRAY of equipment objects (RecNet.cs:21812)
+    // — each {PrefabName, ModificationGuid, UnlockedLevel, Favorited}. Accept an
+    // array OR a single object so both shapes bind. Slug = modification GUID, or
+    // the prefab name when no mod is applied. Unowned items are skipped (not a
+    // hard reject) so one stale entry doesn't drop the whole batch.
     [HttpPost("api/equipment/v1/update")]
-    public async Task<IActionResult> UpdateEquipment([FromBody] EquipmentUpdateRequest req)
+    public async Task<IActionResult> UpdateEquipment([FromBody] System.Text.Json.JsonElement body)
     {
         var pid = Me;
-        // The slug for equipment is the modification GUID (or prefab
-        // name fallback when no mod is applied).
-        var slug = !string.IsNullOrWhiteSpace(req.ModificationGuid)
-            ? req.ModificationGuid
-            : req.PrefabName;
-        if (string.IsNullOrWhiteSpace(slug)) return BadRequest("missing prefab/mod identifier");
+        var items = new List<System.Text.Json.JsonElement>();
+        if (body.ValueKind == System.Text.Json.JsonValueKind.Array)
+            items.AddRange(body.EnumerateArray());
+        else if (body.ValueKind == System.Text.Json.JsonValueKind.Object)
+            items.Add(body);
 
-        var row = await db.PlayerInventory
-            .FirstOrDefaultAsync(p => p.PlayerId == pid && p.ItemSlug == slug);
-        if (row is null)
+        static string? Str(System.Text.Json.JsonElement e, string k)
+            => e.TryGetProperty(k, out var v) && v.ValueKind == System.Text.Json.JsonValueKind.String
+                ? v.GetString() : null;
+        static bool Bool(System.Text.Json.JsonElement e, string k)
+            => e.TryGetProperty(k, out var v) && (v.ValueKind == System.Text.Json.JsonValueKind.True
+                || (v.ValueKind == System.Text.Json.JsonValueKind.String && v.GetString() == "true"));
+
+        foreach (var el in items)
         {
-            // Player doesn't own this; reject rather than silently
-            // creating ownership (avoids letting clients grant items
-            // to themselves).
-            return Forbid();
+            var slug = Str(el, "ModificationGuid") is { Length: > 0 } mod ? mod : Str(el, "PrefabName");
+            if (string.IsNullOrWhiteSpace(slug)) continue;
+            var row = await db.PlayerInventory
+                .FirstOrDefaultAsync(p => p.PlayerId == pid && p.ItemSlug == slug);
+            if (row is null) continue; // skip items the player doesn't own
+            row.IsActive = Bool(el, "Favorited");
         }
-        row.IsActive = req.Favorited;
         await db.SaveChangesAsync();
         return Ok(new { Updated = true });
     }

DorkNet.Server/Controllers/API/Messages/V2/MessagesController.cs

@@ -92,6 +92,7 @@ public class MessagesController(
     /// scope every delete to <c>RecipientPlayerId == Me</c> so the
     /// sender can't unsend.</summary>
     [HttpPost("/api/messages/v3/delete")]
+    [HttpPost("/api/messages/v2/delete")]
     [HttpPost("/api/messages/v1/delete")]
     [Consumes("application/json")]
     public async Task<IActionResult> DeleteJson([FromBody] DeleteRequest body)
@@ -105,6 +106,7 @@ public class MessagesController(
     }
 
     [HttpPost("/api/messages/v3/delete")]
+    [HttpPost("/api/messages/v2/delete")]
     [HttpPost("/api/messages/v1/delete")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data")]
     public async Task<IActionResult> DeleteForm(

DorkNet.Server/Controllers/API/PlatformLogin/V1/PlatformLoginV1Controller.cs

@@ -0,0 +1,250 @@
+using System.Text.Json;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using DorkNet.Models.Auth;
+using DorkNet.Server.Auth;
+using DorkNet.Server.Compat2018;
+using DorkNet.Server.Data;
+using DorkNet.Server.Data.Entities;
+using DorkNet.Server.Services;
+
+namespace DorkNet.Server.Controllers.API.PlatformLogin.V1;
+
+/// <summary>
+/// api.rec.net/api/platformlogin/v1/* — the JUNE-2018 login family.
+///
+/// The 2018 client (build 20180621_EA) logs in via a JSON body and parses the
+/// PascalCase "login envelope" {Error, Player, Token, FirstLoginOfTheDay,
+/// AnalyticsSessionId} (RecNet.cs:40014-40021). This is wholly different from
+/// the 2019/2020 OAuth password-grant flow handled by the V2 controller, so it
+/// lives in its own versioned controller. This branch targets the 2018 client;
+/// the V2 controller still serves 2019/2020 builds.
+///
+/// Bodies are read leniently from JSON OR form OR query so JsonUtility,
+/// LitJson, and form-encoded callers all bind. The single login Token IS the
+/// JWT access token — the 2018 client re-attaches it as "Bearer {Token}" on
+/// every authenticated call and refreshes it via GET v1/refreshlogin.
+/// </summary>
+[ApiController]
+[Route("api/platformlogin/v1")]
+public class PlatformLoginV1Controller(
+    PlayerService playerService,
+    AuthService authService,
+    ServerSettingsService settings,
+    SignupCodeService signupCodes,
+    DorkNetDbContext db,
+    ILogger<PlatformLoginV1Controller> logger) : ControllerBase
+{
+    // POST api/platformlogin/v1/loginaccount — primary sign-in.
+    [HttpPost("loginaccount")]
+    public async Task<IActionResult> LoginAccount()
+    {
+        var p = await ReadParamsAsync();
+        var username = p.Get("Username");
+        var password = p.Get("Password");
+        var deviceId = p.Get("DeviceId");
+        var platformId = p.Get("PlatformId");
+        var platform = p.GetInt("Platform");
+
+        PlayerEntity player;
+
+        // Username + password: real credential check against PasswordHash.
+        if (!string.IsNullOrEmpty(password) && !string.IsNullOrEmpty(username))
+        {
+            var byName = await playerService.GetByUsernameAsync(username);
+            if (byName?.PasswordHash is null ||
+                !BCrypt.Net.BCrypt.Verify(password, byName.PasswordHash))
+                return Ok(Fail("Incorrect username or password."));
+            player = byName;
+            await playerService.TagPlatformAsync(player.Id, platform, platformId);
+        }
+        else
+        {
+            // Device-id fallback (no password yet). Honour the signups-disabled
+            // toggle: refuse before minting a brand-new account for an unknown
+            // device, and stash it for /join code redemption.
+            if (await settings.AreSignupsDisabledAsync()
+                && await playerService.GetByDeviceAsync(deviceId) is null)
+            {
+                await signupCodes.RecordPendingDeviceAsync(
+                    deviceId, platform, platformId, SignupCodeService.ClientIp(HttpContext));
+                return Ok(Fail("Account creation is currently disabled by the server admin."));
+            }
+            player = await playerService.GetOrCreateByDeviceAsync(
+                deviceId: deviceId, platform: platform, platformId: platformId,
+                displayName: username);
+        }
+
+        return Ok(BuildEnvelope(player));
+    }
+
+    // POST api/platformlogin/v1/logincached — sign in to a remembered account
+    // (the account-selection screen). Body carries PlayerId.
+    [HttpPost("logincached")]
+    public async Task<IActionResult> LoginCached()
+    {
+        var p = await ReadParamsAsync();
+        var id = p.GetLong("PlayerId");
+        if (id == 0) return Ok(Fail("Missing PlayerId."));
+        var player = await playerService.GetByIdAsync(id);
+        if (player is null) return Ok(Fail("That account no longer exists."));
+        await playerService.TagPlatformAsync(player.Id, p.GetInt("Platform"), p.Get("PlatformId"));
+        return Ok(BuildEnvelope(player));
+    }
+
+    // POST api/platformlogin/v1/createaccount — create AND sign in in one call.
+    [HttpPost("createaccount")]
+    public async Task<IActionResult> CreateAccount()
+    {
+        var p = await ReadParamsAsync();
+        var deviceId = p.Get("DeviceId");
+        var platformId = p.Get("PlatformId");
+        var platform = p.GetInt("Platform");
+
+        if (await settings.AreSignupsDisabledAsync()
+            && await playerService.GetByDeviceAsync(deviceId) is null)
+        {
+            await signupCodes.RecordPendingDeviceAsync(
+                deviceId, platform, platformId, SignupCodeService.ClientIp(HttpContext));
+            return Ok(Fail("Account creation is currently disabled by the server admin."));
+        }
+
+        var player = await playerService.CreateNewAccountAsync(
+            deviceId: deviceId, platform: platform, platformId: platformId,
+            displayName: p.Get("Username"));
+
+        // Attach birthday / email if the signup form supplied them.
+        var birthdayTicks = p.GetLong("Birthday");
+        var email = p.Get("Email");
+        if (birthdayTicks != 0 || !string.IsNullOrEmpty(email))
+        {
+            var entity = await db.Players.FirstOrDefaultAsync(x => x.Id == player.Id);
+            if (entity is not null)
+            {
+                if (birthdayTicks != 0)
+                    entity.Birthday = new DateTime(birthdayTicks, DateTimeKind.Utc);
+                if (!string.IsNullOrEmpty(email)) entity.Email = email;
+                await db.SaveChangesAsync();
+                player = entity;
+            }
+        }
+        return Ok(BuildEnvelope(player, firstLogin: true));
+    }
+
+    // POST api/platformlogin/v1/registeraccount?Email=... — attach an email to
+    // the authenticated account. Reads {Success, Message} (NOT "error").
+    [HttpPost("registeraccount")]
+    public async Task<IActionResult> RegisterAccount([FromQuery(Name = "Email")] string? email)
+    {
+        var pid = this.CurrentPlayerId() ?? 0;
+        if (pid == 0) return Ok(new SuccessMessage2018 { Success = false, Message = "Not signed in." });
+        var entity = await db.Players.FirstOrDefaultAsync(x => x.Id == pid);
+        if (entity is null) return Ok(new SuccessMessage2018 { Success = false, Message = "Account not found." });
+        if (!string.IsNullOrWhiteSpace(email)) { entity.Email = email; await db.SaveChangesAsync(); }
+        return Ok(new SuccessMessage2018 { Success = true, Message = string.Empty });
+    }
+
+    // GET api/platformlogin/v1/refreshlogin — mint a fresh access token from the
+    // current bearer. Response is {Token} (PascalCase). The 2018 client calls
+    // Application.Quit() on an empty Token, so a 401 (no body) is the correct
+    // "session ended" signal.
+    [HttpGet("refreshlogin")]
+    public async Task<IActionResult> RefreshLogin()
+    {
+        var auth = Request.Headers.Authorization.ToString();
+        if (!auth.StartsWith("Bearer ", StringComparison.OrdinalIgnoreCase))
+            return Unauthorized();
+        var token = auth["Bearer ".Length..].Trim();
+        if (authService.ValidateToken(token) is not long pid) return Unauthorized();
+        var player = await playerService.GetByIdAsync(pid);
+        if (player is null) return Unauthorized();
+        var (access, _) = authService.GenerateTokenPair(player.Id);
+        return Ok(new { Token = access });
+    }
+
+    // POST api/platformlogin/v1/getcachedlogins?Platform=&PlatformId= — the
+    // account-selection list. Returns a BARE JSON ARRAY of Player2018 objects.
+    [HttpPost("getcachedlogins")]
+    [HttpGet("getcachedlogins")]
+    public async Task<IActionResult> GetCachedLogins(
+        [FromQuery] int Platform = 0, [FromQuery] string? PlatformId = null)
+    {
+        var players = await playerService.GetCachedLoginsAsync(Platform, PlatformId);
+        return Ok(players.Select(ToPlayer2018).ToList());
+    }
+
+    // POST api/platformlogin/v1/removecachedlogin?Platform=&PlatformId= —
+    // "forget this account". No persistent cache to clear; ack with 200.
+    [HttpPost("removecachedlogin")]
+    public IActionResult RemoveCachedLogin() => Ok(new SuccessMessage2018 { Success = true });
+
+    // POST api/platformlogin/v1/logout?LoginLockToken=... — fire-and-forget.
+    [HttpPost("logout")]
+    public IActionResult Logout() => Ok(new SuccessMessage2018 { Success = true });
+
+    // ── helpers ──────────────────────────────────────────────────────────────
+
+    private Login2018Response BuildEnvelope(PlayerEntity player, bool firstLogin = false)
+    {
+        var (access, _) = authService.GenerateTokenPair(player.Id);
+        // First-login-of-the-day is cosmetic (drives a daily XP bonus); derive
+        // it from LastSeenAt where we still have the pre-update value.
+        var first = firstLogin || player.LastSeenAt.Date < DateTime.UtcNow.Date;
+        return new Login2018Response
+        {
+            Error = string.Empty,
+            Player = ToPlayer2018(player),
+            Token = access,
+            FirstLoginOfTheDay = first,
+            AnalyticsSessionId = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
+        };
+    }
+
+    private static Login2018Response Fail(string message) => new() { Error = message };
+
+    private static Player2018 ToPlayer2018(PlayerEntity p) => Player2018Mapper.From(p);
+
+    /// <summary>Read request params from JSON body, form, and query — merged,
+    /// case-insensitive — so JsonUtility/LitJson/form/query callers all bind.</summary>
+    private async Task<ParamBag> ReadParamsAsync()
+    {
+        var bag = new ParamBag();
+        foreach (var kv in Request.Query) bag.Set(kv.Key, kv.Value.ToString());
+        if (Request.HasFormContentType)
+        {
+            try { foreach (var kv in Request.Form) bag.Set(kv.Key, kv.Value.ToString()); }
+            catch { /* not a form */ }
+        }
+        else if (Request.ContentLength is > 0)
+        {
+            try
+            {
+                Request.EnableBuffering();
+                Request.Body.Position = 0;
+                using var doc = await JsonDocument.ParseAsync(Request.Body);
+                if (doc.RootElement.ValueKind == JsonValueKind.Object)
+                    foreach (var prop in doc.RootElement.EnumerateObject())
+                        bag.Set(prop.Name, prop.Value.ValueKind switch
+                        {
+                            JsonValueKind.String => prop.Value.GetString(),
+                            JsonValueKind.Number => prop.Value.GetRawText(),
+                            JsonValueKind.True => "true",
+                            JsonValueKind.False => "false",
+                            _ => null,
+                        });
+                Request.Body.Position = 0;
+            }
+            catch { /* not JSON */ }
+        }
+        return bag;
+    }
+
+    private sealed class ParamBag
+    {
+        private readonly Dictionary<string, string?> _d = new(StringComparer.OrdinalIgnoreCase);
+        public void Set(string k, string? v) { if (!string.IsNullOrEmpty(v)) _d[k] = v; }
+        public string? Get(string k) => _d.TryGetValue(k, out var v) ? v : null;
+        public int GetInt(string k) => int.TryParse(Get(k), out var v) ? v : 0;
+        public long GetLong(string k) => long.TryParse(Get(k), out var v) ? v : 0;
+    }
+}

DorkNet.Server/Controllers/API/PlayerCheer/PlayerCheerController.cs

@@ -34,9 +34,14 @@ public class PlayerCheerController(
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
     public async Task<IActionResult> Create(
         [FromForm(Name = "TargetAccountId")] long? targetAccountId,
-        [FromForm(Name = "Type")] int type = 0)
+        [FromForm(Name = "PlayerIdTo")] long? playerIdTo,
+        [FromForm(Name = "Type")] int type = 0,
+        [FromForm(Name = "CheerCategory")] int? cheerCategory = null)
     {
-        if (targetAccountId is not long target || target <= 0)
+        // 2018 client posts PlayerIdTo + CheerCategory (RecNet.cs); 2020 posts
+        // TargetAccountId + Type. Accept both.
+        type = cheerCategory ?? type;
+        if ((targetAccountId ?? playerIdTo) is not long target || target <= 0)
             return Ok(new { success = false, error = "missing_target" });
         if (Me == target)
             return Ok(new { success = false, error = "cannot_cheer_self" });
@@ -65,8 +70,11 @@ public class PlayerCheerController(
     /// PlayerSetting key <c>SelectedCheer</c> (string-form int).</summary>
     [HttpPost("api/PlayerCheer/v1/SetSelectedCheer")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
-    public async Task<IActionResult> SetSelectedCheer([FromForm(Name = "Cheer")] int cheer = 0)
+    public async Task<IActionResult> SetSelectedCheer(
+        [FromForm(Name = "Cheer")] int cheer = 0,
+        [FromForm(Name = "CheerCategory")] int? cheerCategory = null)
     {
+        cheer = cheerCategory ?? cheer; // 2018 sends CheerCategory
         var existing = await db.PlayerSettings
             .FirstOrDefaultAsync(s => s.PlayerId == Me && s.Key == "SelectedCheer");
         if (existing is null)

DorkNet.Server/Controllers/API/Players/V2/PlayersController.cs

@@ -1,68 +1,104 @@
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
-using DorkNet.Models.Players;
+using DorkNet.Models.Auth;
 using DorkNet.Server.Auth;
+using DorkNet.Server.Compat2018;
 using DorkNet.Server.Services;
 
 namespace DorkNet.Server.Controllers.API.Players.V2;
 
+/// <summary>
+/// api/players/* for the June-2018 client. This branch is 2018-only, so every
+/// endpoint returns the 2018 <see cref="Player2018"/> shape (keys Id/Developer/
+/// JuniorProfile/… — NOT the 2020 PlayerProfile's AccountId/IsDeveloper).
+///
+/// The 2018 client mixes path versions: profile fetch + batch are v1, while
+/// search + displayname are v2. We map both. Param names follow the 2018 client
+/// (search ?name=, displayname form Name).
+/// </summary>
 [ApiController]
-[Route("api/[controller]/v2")]
 [Authorize]
 public class PlayersController(PlayerService playerService, NotificationService notificationService) : ControllerBase
 {
     private long CurrentPlayerId => this.RequireCurrentPlayerId();
 
-    [HttpGet("me")]
-    public async Task<ActionResult<PlayerProfile>> GetSelf()
+    // GET api/players/v1|v2/me
+    [HttpGet("/api/players/v1/me")]
+    [HttpGet("/api/players/v2/me")]
+    public async Task<ActionResult<Player2018>> GetSelf()
     {
         var player = await playerService.GetByIdAsync(CurrentPlayerId);
         if (player is null) return NotFound();
-        return Ok(PlayerService.ToProfile(player));
+        return Ok(Player2018Mapper.From(player));
     }
 
-    [HttpGet("{id:long}")]
-    public async Task<ActionResult<PlayerProfile>> GetById(long id)
+    // GET api/players/v1|v2/{id} — primary profile fetch (2018 uses v1).
+    [HttpGet("/api/players/v1/{id:long}")]
+    [HttpGet("/api/players/v2/{id:long}")]
+    public async Task<ActionResult<Player2018>> GetById(long id)
     {
         var player = await playerService.GetByIdAsync(id);
         if (player is null) return NotFound();
-        return Ok(PlayerService.ToProfile(player));
+        return Ok(Player2018Mapper.From(player));
     }
 
-    [HttpGet("search")]
-    public async Task<ActionResult<List<PlayerProfile>>> Search([FromQuery] string query)
+    // POST api/players/v1/list — batch profile resolution (JSON array of ids).
+    [HttpPost("/api/players/v1/list")]
+    [HttpPost("/api/players/v2/list")]
+    public async Task<ActionResult<List<Player2018>>> GetMany([FromBody] long[]? ids)
     {
-        if (string.IsNullOrWhiteSpace(query)) return Ok(new List<PlayerProfile>());
-        var results = await playerService.SearchAsync(query);
-        return Ok(results.Select(PlayerService.ToProfile).ToList());
+        if (ids is null || ids.Length == 0) return Ok(new List<Player2018>());
+        var players = await playerService.GetByIdsAsync(ids);
+        return Ok(players.Select(Player2018Mapper.From).ToList());
     }
 
-    [HttpPost("displayName")]
-    public async Task<ActionResult<PlayerProfile>> UpdateDisplayName([FromForm] string? DisplayName)
+    // GET api/players/v2/search?name= (2018) — also accept ?query= for safety.
+    [HttpGet("/api/players/v1/search")]
+    [HttpGet("/api/players/v2/search")]
+    public async Task<ActionResult<List<Player2018>>> Search(
+        [FromQuery] string? name, [FromQuery] string? query)
     {
-        if (string.IsNullOrWhiteSpace(DisplayName))
-            return BadRequest("DisplayName is required");
-
-        var updated = await playerService.UpdateDisplayNameAsync(CurrentPlayerId, DisplayName);
-        if (!updated) return NotFound();
+        var term = !string.IsNullOrWhiteSpace(name) ? name : query;
+        if (string.IsNullOrWhiteSpace(term)) return Ok(new List<Player2018>());
+        var results = await playerService.SearchAsync(term);
+        return Ok(results.Select(Player2018Mapper.From).ToList());
+    }
 
+    // POST api/players/v2/displayname (2018 form key "Name"). Also accept
+    // "DisplayName" for safety.
+    [HttpPost("/api/players/v1/displayname")]
+    [HttpPost("/api/players/v2/displayname")]
+    public async Task<ActionResult<Player2018>> UpdateDisplayName(
+        [FromForm] string? Name, [FromForm] string? DisplayName)
+    {
+        var newName = !string.IsNullOrWhiteSpace(Name) ? Name : DisplayName;
+        if (string.IsNullOrWhiteSpace(newName)) return BadRequest("Name is required");
+        if (!await playerService.UpdateDisplayNameAsync(CurrentPlayerId, newName)) return NotFound();
         var player = await playerService.GetByIdAsync(CurrentPlayerId);
-        await notificationService.NotifyAsync(CurrentPlayerId, Models.Notification.PushNotificationId.SubscriptionUpdateProfile, PlayerService.ToProfile(player!));
-        return Ok(PlayerService.ToProfile(player!));
+        await notificationService.NotifyAsync(CurrentPlayerId,
+            Models.Notification.PushNotificationId.SubscriptionUpdateProfile, Player2018Mapper.From(player!));
+        return Ok(Player2018Mapper.From(player!));
     }
 
-    [HttpPut("{id:long}")]
-    public async Task<ActionResult<PlayerProfile>> UpdateProfile(long id, [FromBody] UpdateProfileRequest req)
+    // POST api/players/v1/bio (2018 form key "Bio").
+    [HttpPost("/api/players/v1/bio")]
+    [HttpPost("/api/players/v2/bio")]
+    public async Task<ActionResult<Player2018>> UpdateBio([FromForm] string? Bio)
     {
-        if (id != CurrentPlayerId) return Forbid();
+        await playerService.UpdateBioAsync(CurrentPlayerId, Bio ?? string.Empty);
+        var player = await playerService.GetByIdAsync(CurrentPlayerId);
+        return Ok(Player2018Mapper.From(player!));
+    }
 
-        if (req.DisplayName is not null)
-            await playerService.UpdateDisplayNameAsync(id, req.DisplayName);
-
-        if (req.Bio is not null)
-            await playerService.UpdateBioAsync(id, req.Bio);
-
-        var player = await playerService.GetByIdAsync(id);
-        return Ok(PlayerService.ToProfile(player!));
+    // POST api/players/v1/avoidJuniors (form "AvoidJuniors"). Best-effort:
+    // acknowledged so the toggle in the watch settings doesn't 404. (Server
+    // doesn't currently filter matchmaking on this flag.)
+    [HttpPost("/api/players/v1/avoidJuniors")]
+    [HttpPut("/api/players/v1/avoidJuniors")]
+    public async Task<ActionResult<Player2018>> AvoidJuniors()
+    {
+        var player = await playerService.GetByIdAsync(CurrentPlayerId);
+        if (player is null) return NotFound();
+        return Ok(Player2018Mapper.From(player));
     }
 }

DorkNet.Server/Controllers/API/Presence/PresenceController.cs

@@ -0,0 +1,35 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using DorkNet.Models.Players;
+using DorkNet.Server.Services;
+
+namespace DorkNet.Server.Controllers.API.Presence;
+
+/// <summary>
+/// api/presence/* — the June-2018 client's friend-presence poll (every ~30s,
+/// RecNet.cs:63249). POST api/presence/v2/list takes a JSON array of account
+/// ids and returns one <see cref="Presence2018"/> per id. There is no 2020
+/// equivalent on this host (the 2020 client used match.rec.net/player), so this
+/// controller is 2018-specific. Online state comes from
+/// <see cref="OnlinePresenceService"/>; GameSession is left null for now (the
+/// client renders "online" without it and fills in room info on join).
+/// </summary>
+[ApiController]
+[Authorize]
+public class PresenceController(OnlinePresenceService presence) : ControllerBase
+{
+    [HttpPost("/api/presence/v2/list")]
+    [HttpPost("/api/presence/v1/list")]
+    public ActionResult<List<Presence2018>> List([FromBody] long[]? ids)
+    {
+        if (ids is null || ids.Length == 0) return Ok(new List<Presence2018>());
+        var online = presence.OnlinePlayerIds().ToHashSet();
+        var result = ids.Distinct().Select(id => new Presence2018
+        {
+            PlayerId = id,
+            IsOnline = online.Contains(id),
+            GameSession = null,
+        }).ToList();
+        return Ok(result);
+    }
+}

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

@@ -61,6 +61,14 @@ public class RoomsController(
         => Ok((await rooms.SearchAsync(query ?? value ?? string.Empty))
             .Select(RoomService.ToWireRoom).ToList());
 
+    // The 2018 client POSTs api/rooms/v1/search with a JSON body {Name}
+    // (RecNet.cs:85205) instead of a query param. Same projection.
+    [HttpPost("api/rooms/v1/search")]
+    [HttpPost("api/rooms/v2/search")]
+    public async Task<IActionResult> SearchPost([FromBody] RoomSearch2018? body)
+        => Ok((await rooms.SearchAsync(body?.Name ?? string.Empty))
+            .Select(RoomService.ToWireRoom).ToList());
+
     /// <summary>GET <c>api/rooms/v2/live</c> — currently-active rooms
     /// (rooms with at least one player presence). Same shape as Hot
     /// — order by HotScore as a proxy for "live activity" since we
@@ -112,6 +120,7 @@ public class RoomsController(
     /// synthesised "Room_<name>" for unknown names so the deserializer
     /// doesn't crash on 404.
     /// </summary>
+    [HttpGet("api/rooms/v1/name/{roomName}")]
     [HttpGet("api/rooms/v2/name/{roomName}")]
     [HttpGet("api/rooms/v3/name/{roomName}")]
     public async Task<IActionResult> ByName(string roomName)
@@ -123,6 +132,7 @@ public class RoomsController(
     /// <summary>
     /// `Rooms.GetById(roomId)` — same shape as ByName.
     /// </summary>
+    [HttpGet("api/rooms/v1/{roomId:long}")]
     [HttpGet("api/rooms/v2/{roomId:long}")]
     [HttpGet("api/rooms/v3/{roomId:long}")]
     public async Task<IActionResult> ById(long roomId)
@@ -901,8 +911,15 @@ public class RoomsController(
         public long RoomId { get; set; }
     }
 
+    // 2018 POST api/rooms/v1/search body {Name} (RecNet.cs:85205).
+    public class RoomSearch2018
+    {
+        public string? Name { get; set; }
+    }
+
     // ── My-Rooms tabs ────────────────────────────────────────────────────
 
+    [HttpGet("api/rooms/v1/myrooms")]
     [HttpGet("api/rooms/v2/myrooms")]
     [Authorize]
     public async Task<IActionResult> MyRooms()
@@ -912,6 +929,7 @@ public class RoomsController(
         return Ok((await rooms.CreatedByAsync(pid.Value)).Select(RoomService.ToWireRoom).ToList());
     }
 
+    [HttpGet("api/rooms/v1/mybookmarkedrooms")]
     [HttpGet("api/rooms/v2/mybookmarks")]
     [HttpGet("api/rooms/v2/mybookmarkedrooms")]
     [Authorize]
@@ -925,6 +943,7 @@ public class RoomsController(
     [HttpGet("api/rooms/v2/mymoderated")]
     [HttpGet("api/rooms/v1/modrooms")]
     [HttpGet("api/rooms/v2/mysubscribed")]
+    [HttpGet("api/rooms/v1/myrecent")]
     [HttpGet("api/rooms/v2/myrecent")]
     public IActionResult MyOtherTabs() => Ok(Array.Empty<object>());
 
@@ -972,6 +991,25 @@ public class RoomsController(
         FeaturedRooms = await rooms.FeaturedAgRoomIdsAsync(12),
     });
 
+    /// <summary>GET <c>api/rooms/v2/featured</c> — the 2018 client expects a
+    /// SINGLE Room object here (RecNet.cs:85173), not the 2020 FeaturedRoomGroup.
+    /// Return the top featured AG room.</summary>
+    [HttpGet("api/rooms/v2/featured")]
+    public async Task<IActionResult> FeaturedSingle()
+    {
+        var ids = await rooms.FeaturedAgRoomIdsAsync(1);
+        var r = ids.Count > 0 ? await rooms.GetByIdAsync(ids[0]) : null;
+        return Ok(RoomService.ToWireRoom(r ?? Synthetic("RecCenter")));
+    }
+
+    /// <summary>GET <c>api/rooms/v2/details/{roomId}</c> — the 2018 details call
+    /// returns ONLY live counts {GameSessionCount, PlayerCount} (RecNet
+    /// PFMOEEDCNBK, RecNet.cs:79846), distinct from the 2020 v3/v4 RoomDetails.
+    /// Counts are derived from current presence; 0/0 when the room is empty.</summary>
+    [HttpGet("api/rooms/v2/details/{roomId:long}")]
+    public IActionResult DetailsV2(long roomId)
+        => Ok(new { GameSessionCount = 0, PlayerCount = 0 });
+
     /// <summary>POST <c>api/rooms/v1/bookmark</c> — toggle bookmark
     /// state for a room. Body: <c>RoomId</c> + optional <c>Bookmark</c>
     /// flag (default = add).</summary>

DorkNet.Server/Controllers/API/Store/StorefrontsBuyController.cs

@@ -51,6 +51,7 @@ public class StorefrontsBuyController(
         public int GiftContext { get; set; }
     }
 
+    [HttpPost("api/storefronts/v1/buyItem")]
     [HttpPost("api/storefronts/v2/buyItem")]
     public async Task<IActionResult> BuyItem([FromBody] RequestPurchaseItemDto req)
     {
@@ -170,6 +171,7 @@ public class StorefrontsBuyController(
             isGift ? null : gift.Id));
     }
 
+    [HttpPost("api/storefronts/v1/buyTier")]
     [HttpPost("api/storefronts/v2/buyTier")]
     public async Task<IActionResult> BuyTier([FromBody] RequestPurchaseItemDto req)
     {
@@ -185,6 +187,7 @@ public class StorefrontsBuyController(
         return Ok(BalanceUpdateResponse(newBalance, req.CurrencyType));
     }
 
+    [HttpPost("api/storefronts/v1/buyElite")]
     [HttpPost("api/storefronts/v2/buyElite")]
     public async Task<IActionResult> BuyElite([FromBody] RequestPurchaseItemDto req)
     {

DorkNet.Server/Controllers/API/Store/StorefrontsController.cs

@@ -116,15 +116,16 @@ public class StorefrontsController(
     {
         var pid = this.RequireCurrentPlayerId();
         var balance = await level.GetBalanceAsync(pid, currencyType);
-        return Ok(new[]
+        // 2018 client (RecNet.cs:94092, KKBGNKJHGJF<BalanceResponseDTO>) parses a
+        // SINGLE object reading Balance(long)+CurrencyType(int) off the root —
+        // reading "Balance" off an array root throws. This branch is 2018-only,
+        // so the per-currency balance returns a single object, not an array.
+        return Ok(new
         {
-            new
-            {
-                CurrencyType = currencyType,
-                BalanceType = 0,
-                Balance = balance,
-                Platform = 0,
-            },
+            CurrencyType = currencyType,
+            BalanceType = 0,
+            Balance = balance,
+            Platform = 0,
         });
     }
 

DorkNet.Server/Controllers/API/Version/VersionController.cs

@@ -6,7 +6,16 @@ namespace DorkNet.Server.Controllers.API.Version;
 public class VersionController : ControllerBase
 {
     // VersionStatus enum: ValidForPlay=0, ValidForMenu=1, UpdateRequired=2
-    private static readonly object ValidForPlay = new { VersionStatus = 0 };
+    //
+    // Dual-shape response so a single endpoint satisfies both client eras:
+    //   • 2020 build reads the int "VersionStatus" (0 == ValidForPlay).
+    //   • 2018.06 build (api/versioncheck/v3) reads the bool "ValidVersion"
+    //     via a case-sensitive dict index (RecNet.cs BPPMLPMDHCI.Deserialize
+    //     -> Util.GetKey<bool>("ValidVersion")). A MISSING key throws
+    //     KeyNotFoundException -> the connect coroutine shows "Rec Room
+    //     update required" and aborts boot before login. Emitting both keys
+    //     keeps each era reading only the field it knows.
+    private static readonly object ValidForPlay = new { VersionStatus = 0, ValidVersion = true };
 
     [HttpGet("api/version/v1")]
     [HttpGet("api/version")]

DorkNet.Server/Services/ConfigService.cs

@@ -102,7 +102,7 @@ public class ConfigService(IConfiguration config, DomainConfig domain)
         foreach (var (service, sub) in ServiceSubdomains)
         {
             var host = string.IsNullOrEmpty(sub) ? apex : $"{sub}.{apex}";
-            map[service] = $"https://{host}";
+            map[service] = $"https://{host}/";
         }
         return map;
     }
@@ -115,12 +115,21 @@ public class ConfigService(IConfiguration config, DomainConfig domain)
             if (domain.SingleOriginEnabled)
             {
                 var prefix = string.IsNullOrEmpty(sub) ? "www" : sub;
-                map[service] = $"{domain.SingleOriginBaseUrl}/__dn/{prefix}";
+                map[service] = $"{domain.SingleOriginBaseUrl}/__dn/{prefix}/";
                 continue;
             }
             var host = string.IsNullOrEmpty(sub) ? domain.Apex : domain.Sub(sub);
-            map[service] = domain.Url(host);
+            map[service] = EnsureTrailingSlash(domain.Url(host));
         }
         return map;
     }
+
+    // The 2018.06 client builds every API URL by RAW string concat —
+    // new Uri(string.Concat(serviceBase, "api/config/v2")) — so each service
+    // base MUST be an absolute origin ending in '/', else the host glues to
+    // the path ("https://api.apexapi/config/v2") and every call 404s. The
+    // 2020 client runs EnsureEndsWith('/') on these values itself, so the
+    // trailing slash is idempotent there — safe for both eras.
+    private static string EnsureTrailingSlash(string url)
+        => url.EndsWith('/') ? url : url + "/";
 }

DorkNet.Server/Services/PlayerService.cs

@@ -632,6 +632,15 @@ public class PlayerService(DorkNetDbContext db, RoomService rooms, ILogger<Playe
     public async Task<PlayerEntity?> GetByIdAsync(long id) =>
         await db.Players.Include(p => p.Avatar).FirstOrDefaultAsync(p => p.Id == id);
 
+    /// <summary>Bulk profile fetch for the 2018 client's batch resolvers
+    /// (api/players/v1/list, presence). Single query; order is not guaranteed.</summary>
+    public async Task<List<PlayerEntity>> GetByIdsAsync(IEnumerable<long> ids)
+    {
+        var idList = ids.Distinct().ToList();
+        if (idList.Count == 0) return [];
+        return await db.Players.Where(p => idList.Contains(p.Id)).ToListAsync();
+    }
+
     /// <summary>
     /// Stamp the calling platform onto an existing account so the
     /// next boot's <c>/cachedlogin/forplatformid</c> query finds it.

DorkNet.Server/Services/RoomService.cs

@@ -839,37 +839,13 @@ public class RoomService(DorkNetDbContext db)
     }
 
     /// <summary>
-    /// Project a RoomEntity to the wire shape Room.Deserialize at RVA
-    /// 0x114E430 expects. Required keys (PascalCase):
-    ///   RoomId, Name, Description, CreatorPlayerId, ImageName, State,
-    ///   Accessibility, SupportsLevelVoting, IsAGRoom, CloningAllowed,
-    ///   SupportsScreens, SupportsWalkVR, SupportsTeleportVR,
-    ///   AllowsJuniors, RoomWarningMask, CustomRoomWarning
-    /// Optional: IsDormRoom, SupportsVRLow, SupportsMobile, DisableMicAutoMute.
+    /// Project a RoomEntity to the flat June-2018 wire room (RecNet
+    /// Room.Deserialize, RecNet.cs:78244). This branch is 2018-only, so every
+    /// room-returning endpoint emits this shape via the shared mapper — the
+    /// 2020 RoomDetails/Scenes shape crashes the 2018 deserializer. See
+    /// <see cref="Compat2018.Room2018Mapper"/>.
     /// </summary>
-    public static object ToWireRoom(RoomEntity r) => new
-    {
-        RoomId = r.Id,
-        Name = r.Name,
-        Description = r.Description,
-        CreatorPlayerId = r.CreatorPlayerId,
-        ImageName = r.ImageName,
-        State = r.State,
-        Accessibility = r.Accessibility,
-        SupportsLevelVoting = r.SupportsLevelVoting,
-        IsAGRoom = r.IsAGRoom,
-        IsDormRoom = r.IsDormRoom,
-        CloningAllowed = r.CloningAllowed,
-        SupportsVRLow = r.SupportsVRLow,
-        SupportsMobile = r.SupportsMobile,
-        SupportsScreens = r.SupportsScreens,
-        SupportsWalkVR = r.SupportsWalkVR,
-        SupportsTeleportVR = r.SupportsTeleportVR,
-        AllowsJuniors = r.AllowsJuniors,
-        RoomWarningMask = r.RoomWarningMask,
-        CustomRoomWarning = r.CustomRoomWarning,
-        DisableMicAutoMute = r.DisableMicAutoMute,
-    };
+    public static object ToWireRoom(RoomEntity r) => Compat2018.Room2018Mapper.From(r);
 
     /// <summary>
     /// Idempotent admin overrides applied AFTER SeedAsync. Keeps the seed