feat: redesign match play and add broadcast tooling

src/lib/server/db/auth.schema.ts

@@ -1,15 +1,37 @@
 // src/lib/server/db/auth.schema.ts
 import { relations } from 'drizzle-orm';
-import { pgTable, text, timestamp, boolean, index } from 'drizzle-orm/pg-core';
+import {
+	pgTable,
+	text,
+	timestamp,
+	boolean,
+	index,
+	integer,
+	uniqueIndex
+} from 'drizzle-orm/pg-core';
+import { jsonb } from './jsonb';
+import type { ConnectionProfile } from '$lib/auth-identity';
 
 export const user = pgTable('user', {
 	id: text('id').primaryKey(),
 	name: text('name').notNull(),
-	email: text('email').notNull().unique(),
+	// Only actual contact addresses belong here. OAuth identity lives in account.
+	email: text('contact_email').unique(),
+	// Better Auth's required email field is mapped to this private compatibility field.
+	authEmail: text('email').notNull().unique(),
 	emailVerified: boolean('email_verified').default(false).notNull(),
 	image: text('image'),
 	// ── Staff role: 'player' | 'referee' | 'admin' ──
 	role: text('role').default('player').notNull(),
+	rootAdmin: boolean('root_admin').default(false).notNull(),
+	mergedIntoUserId: text('merged_into_user_id'),
+	osuId: integer('osu_id'),
+	countryCode: text('country_code'),
+	discordId: text('discord_id'),
+	bannedAt: timestamp('banned_at', { withTimezone: true }),
+	timezone: text('timezone'),
+	/** Local hours (0–23) the player can play. Empty means no preference. */
+	availableHours: jsonb('available_hours').$type<number[]>(),
 	createdAt: timestamp('created_at').defaultNow().notNull(),
 	updatedAt: timestamp('updated_at')
 		.defaultNow()
@@ -52,12 +74,17 @@ export const account = pgTable(
 		refreshTokenExpiresAt: timestamp('refresh_token_expires_at'),
 		scope: text('scope'),
 		password: text('password'),
+		profile: jsonb('profile').$type<ConnectionProfile>(),
 		createdAt: timestamp('created_at').defaultNow().notNull(),
 		updatedAt: timestamp('updated_at')
 			.$onUpdate(() => new Date())
 			.notNull()
 	},
-	(table) => [index('account_userId_idx').on(table.userId)]
+	(table) => [
+		index('account_userId_idx').on(table.userId),
+		uniqueIndex('account_provider_identity_idx').on(table.providerId, table.accountId),
+		uniqueIndex('account_user_provider_idx').on(table.userId, table.providerId)
+	]
 );
 
 export const verification = pgTable(