feat(profile): carry linked identities in the profile (email, telegram, vk)

Add email / telegram_linked / vk_linked to the Profile (fbs table + regenerated
Go/TS bindings, gateway ProfileResp + encodeProfile, backend DTO, UI model +
decode). They are filled outside the pure projection — Server.profileResponse now
reads the account's identities (like the banner seam) — and will drive the profile's
Add / Unlink / change-email controls.

ui/src/gen/fbs/scrabblefb/profile.ts

@@ -107,8 +107,25 @@ variantPreferencesLength():number {
   return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
 }
 
+email():string|null
+email(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+email(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 30);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+telegramLinked():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 32);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+vkLinked():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 34);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
 static startProfile(builder:flatbuffers.Builder) {
-  builder.startObject(13);
+  builder.startObject(16);
 }
 
 static addUserId(builder:flatbuffers.Builder, userIdOffset:flatbuffers.Offset) {
@@ -175,6 +192,18 @@ static startVariantPreferencesVector(builder:flatbuffers.Builder, numElems:numbe
   builder.startVector(4, numElems, 4);
 }
 
+static addEmail(builder:flatbuffers.Builder, emailOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(13, emailOffset, 0);
+}
+
+static addTelegramLinked(builder:flatbuffers.Builder, telegramLinked:boolean) {
+  builder.addFieldInt8(14, +telegramLinked, +false);
+}
+
+static addVkLinked(builder:flatbuffers.Builder, vkLinked:boolean) {
+  builder.addFieldInt8(15, +vkLinked, +false);
+}
+
 static endProfile(builder:flatbuffers.Builder):flatbuffers.Offset {
   const offset = builder.endObject();
   return offset;

ui/src/lib/codec.ts

@@ -354,6 +354,9 @@ export function decodeProfile(buf: Uint8Array): Profile {
     notificationsInAppOnly: p.notificationsInAppOnly(),
     variantPreferences: decodeVariantPreferences(p),
     banner: decodeBanner(p),
+    email: s(p.email()),
+    telegramLinked: p.telegramLinked(),
+    vkLinked: p.vkLinked(),
   };
 }
 

ui/src/lib/mock/data.ts

@@ -39,6 +39,9 @@ export const PROFILE: Profile = {
   notificationsInAppOnly: true,
   // Every variant enabled, so the mock-driven UI offers the full New Game picker.
   variantPreferences: ['erudit_ru', 'scrabble_ru', 'scrabble_en'],
+  email: 'you@example.com',
+  telegramLinked: false,
+  vkLinked: false,
 };
 
 // Seed social/account data for the mock (pnpm start + Playwright). The mock profile

ui/src/lib/model.ts

@@ -156,6 +156,11 @@ export interface Profile {
   variantPreferences: Variant[];
   /** The advertising-banner block, present only for a viewer eligible to see it. */
   banner?: Banner;
+  /** The account's confirmed email address ("" when none). */
+  email: string;
+  /** Whether a Telegram / VK identity is attached — drives the Add / Unlink controls. */
+  telegramLinked: boolean;
+  vkLinked: boolean;
 }
 
 /** Banner is the advertising-banner block of an eligible viewer's profile. */