feat: implement database-backed game settings with a new schema, service, and migration script.

shared/db/schema/game-settings.ts

@@ -0,0 +1,88 @@
+import {
+    pgTable,
+    text,
+    timestamp,
+    jsonb,
+} from 'drizzle-orm/pg-core';
+import { relations, type InferSelectModel, type InferInsertModel } from 'drizzle-orm';
+
+export type GameSettings = InferSelectModel<typeof gameSettings>;
+export type GameSettingsInsert = InferInsertModel<typeof gameSettings>;
+
+export interface LevelingConfig {
+    base: number;
+    exponent: number;
+    chat: {
+        cooldownMs: number;
+        minXp: number;
+        maxXp: number;
+    };
+}
+
+export interface EconomyConfig {
+    daily: {
+        amount: string;
+        streakBonus: string;
+        weeklyBonus: string;
+        cooldownMs: number;
+    };
+    transfers: {
+        allowSelfTransfer: boolean;
+        minAmount: string;
+    };
+    exam: {
+        multMin: number;
+        multMax: number;
+    };
+}
+
+export interface InventoryConfig {
+    maxStackSize: string;
+    maxSlots: number;
+}
+
+export interface LootdropConfig {
+    activityWindowMs: number;
+    minMessages: number;
+    spawnChance: number;
+    cooldownMs: number;
+    reward: {
+        min: number;
+        max: number;
+        currency: string;
+    };
+}
+
+export interface TriviaConfig {
+    entryFee: string;
+    rewardMultiplier: number;
+    timeoutSeconds: number;
+    cooldownMs: number;
+    categories: number[];
+    difficulty: 'easy' | 'medium' | 'hard' | 'random';
+}
+
+export interface ModerationConfig {
+    prune: {
+        maxAmount: number;
+        confirmThreshold: number;
+        batchSize: number;
+        batchDelayMs: number;
+    };
+}
+
+export const gameSettings = pgTable('game_settings', {
+    id: text('id').primaryKey().default('default'),
+    leveling: jsonb('leveling').$type<LevelingConfig>().notNull(),
+    economy: jsonb('economy').$type<EconomyConfig>().notNull(),
+    inventory: jsonb('inventory').$type<InventoryConfig>().notNull(),
+    lootdrop: jsonb('lootdrop').$type<LootdropConfig>().notNull(),
+    trivia: jsonb('trivia').$type<TriviaConfig>().notNull(),
+    moderation: jsonb('moderation').$type<ModerationConfig>().notNull(),
+    commands: jsonb('commands').$type<Record<string, boolean>>().default({}),
+    system: jsonb('system').$type<Record<string, unknown>>().default({}),
+    createdAt: timestamp('created_at', { withTimezone: true }).defaultNow().notNull(),
+    updatedAt: timestamp('updated_at', { withTimezone: true }).defaultNow().notNull(),
+});
+
+export const gameSettingsRelations = relations(gameSettings, () => ({}));