feat: initialize booster role bot with database and Discord integration

- Add drizzle configuration for SQLite database
- Create package.json with necessary dependencies and scripts
- Implement configuration loading for Discord bot
- Define permissions for roles
- Set up database schema for booster roles
- Create Discord client and commands for managing booster roles
- Handle guild member updates to manage roles based on boost status
- Implement boost eligibility checks and role management logic
- Add tests for boost eligibility and role guards
- Create service for managing booster roles with in-memory storage for testing
- Configure TypeScript settings for the project

src/discord/client.ts

@@ -0,0 +1,7 @@
+import { Client, GatewayIntentBits } from "discord.js";
+
+export function createDiscordClient(): Client {
+  return new Client({
+    intents: [GatewayIntentBits.Guilds, GatewayIntentBits.GuildMembers]
+  });
+}

src/discord/commands/booster-role.ts

@@ -0,0 +1,25 @@
+import { SlashCommandBuilder } from "discord.js";
+
+export const boosterRoleCommand = new SlashCommandBuilder()
+  .setName("booster-role")
+  .setDescription("Manage your cosmetic booster role")
+  .addSubcommand((command) =>
+    command
+      .setName("claim")
+      .setDescription("Claim a new custom cosmetic booster role")
+      .addStringOption((option) => option.setName("name").setDescription("Role name").setRequired(true))
+      .addStringOption((option) => option.setName("color").setDescription("Hex color like #AABBCC"))
+  )
+  .addSubcommand((command) =>
+    command
+      .setName("rename")
+      .setDescription("Rename your bot-managed booster role")
+      .addStringOption((option) => option.setName("name").setDescription("New role name").setRequired(true))
+  )
+  .addSubcommand((command) =>
+    command
+      .setName("recolor")
+      .setDescription("Recolor your bot-managed booster role")
+      .addStringOption((option) => option.setName("color").setDescription("Hex color like #AABBCC").setRequired(true))
+  )
+  .addSubcommand((command) => command.setName("delete").setDescription("Delete your bot-managed booster role"));

src/discord/events/guildMemberUpdate.ts

@@ -0,0 +1,11 @@
+import type { GuildMember } from "discord.js";
+import type { BoosterRoleService } from "../../services/boosterRoleService";
+
+export async function handleGuildMemberUpdate(oldMember: GuildMember, newMember: GuildMember, service: BoosterRoleService): Promise<void> {
+  const hadBoost = Boolean(oldMember.premiumSince);
+  const hasBoost = Boolean(newMember.premiumSince);
+
+  if (hadBoost && !hasBoost) {
+    await service.removeRoleForLostBoost({ guildId: newMember.guild.id, userId: newMember.id });
+  }
+}