Remove unused runtime dependencies from bot package manifest

[Copilot]

This PR trims the Node dependency surface by removing packages that are declared but not referenced by the codebase. The dependency manifest and lockfile are updated to reflect only runtime packages currently in use.

• Dependency cleanup

  • Removed unused direct dependencies:
    • log-timestamp
    • node-fetch

• Lockfile alignment

  • Regenerated package-lock.json to remove transitive entries introduced solely by those packages.

• Runtime dependency retained

  • Kept sqlite3 because the app initializes Sequelize with the SQLite dialect, so the driver remains required at runtime.

{
  "dependencies": {
    "log-timestamp": "^0.3.0",
    "node-fetch": "^3.3.2"
  }
}

{
  "dependencies": {
    // removed: log-timestamp
    // removed: node-fetch
  }
}