Migrate entire codebase to TypeScript

[Copilot]

Converted all 34 JavaScript files to TypeScript for type safety and maintainability.

Migration Scope

• Configuration (3 files): Added type-safe enums for Curso and Nivel, typed environment config
• Utilities (7 files): Typed formatting, validation, permissions, logging with proper interfaces
• Services (3 files): Typed Supabase, OpenRouter, and N8N clients with method signatures
• Events (2 files): Typed Discord.js event handlers (ClientReady, InteractionCreate)
• Commands (9 files): All slash commands typed with ChatInputCommandInteraction
• Interactions (9 files): Button and modal handlers with respective interaction types
• Entry point: Main bot initialization with typed command loader

Key Changes

Type Definitions

// Custom interfaces for domain models
interface User {
  userId: string;
  username: string;
  amount: number;
  curso?: Curso | null;
}

type Curso = '1E1' | '1E2' | '2E1' | '2E2' | '3E1' | '3E2';
type Nivel = 'Primero' | 'Segundo' | 'Tercero';

Command Handler Pattern

async execute(interaction: ChatInputCommandInteraction) {
  const targetUser = interaction.options.getUser('user', true);
  const amount = interaction.options.get('amount', true).value as number;
  await supabaseService.addCoins(targetUser.id, amount);
}

Build Configuration

• tsconfig.json: Strict mode enabled, ES2020 target, CommonJS modules
• package.json: Added build script, updated start to compile first
• .gitignore: Excludes dist/ and TypeScript artifacts
• Compilation produces JavaScript + source maps + declaration files in dist/

Zero compilation errors. All functionality preserved.

Original prompt

Migra todo el bot a typescript, asegurate de que funcione correctamente.

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