feat: new Cipher and tg.users table and router

[lorenzocorallo]

No description provided.

[Copilot]

Pull Request Overview

This PR refactors the encryption utilities and adds a new Telegram users feature. The changes include replacing the direct encryption functions with a new Cipher class that uses salt-based key derivation, and introducing a complete tg.users table with corresponding API endpoints.

• Replaces simple encrypt/decrypt functions with a salt-based Cipher class for improved security
• Adds new tg.users table and router with encrypted user data storage
• Updates version numbers across packages

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
backend/src/utils/encrypt.ts	Removed old encryption utility functions
backend/src/utils/cipher.ts	Added new Cipher class with salt-based key derivation
backend/src/routers/tg/users.ts	Added new router for Telegram users with encryption/decryption
backend/src/routers/tg/messages.ts	Updated to use new Cipher class instead of direct encrypt/decrypt
backend/src/routers/tg/permissions.ts	Minor schema fix for error union type
backend/src/db/schema/tg/users.ts	Added database schema for users table
backend/drizzle/	Database migration files for new users table
package.json files	Version bumps to 0.12.0

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[Copilot]

Pull Request Overview

Copilot reviewed 13 out of 13 changed files in this pull request and generated no new comments.

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