Remove the stray root-level JavaScript files superseded by the NestJS moderation module

[RUKAYAT-CODER]

Overview

The repository root tracks ModerationItem.js, moderation.controller.js, moderation.routes.js, and simple-server.js — plain JavaScript files from an earlier Express-based iteration. They are not imported by the NestJS application, are not covered by tsconfig.build.json, are not linted by the {src,apps,libs,test}/**/*.ts ESLint glob, and are not type checked. simple-server.js is even wired to a start:simple npm script, so it is presented as a supported entry point. Meanwhile src/moderation/ and src/modules/moderation/ contain the real implementation. Contributors searching for moderation code find three plausible-looking files that no running code path uses.

Specifications

Features:

• The repository contains one moderation implementation.
• No untyped, unlinted JavaScript entry point is presented as supported.

Tasks:

• Confirm via a repository-wide search that nothing imports the four files.
• Delete ModerationItem.js, moderation.controller.js, and moderation.routes.js.
• Remove simple-server.js and the start:simple script from package.json, or move it under scripts/ and document what it is for.
• Reconcile the duplication between src/moderation/ and src/modules/moderation/ so there is a single canonical module.

Impacted Files:

• ModerationItem.js
• moderation.controller.js
• moderation.routes.js
• simple-server.js
• package.json

Acceptance Criteria

• The four JavaScript files are removed from version control.
• start:simple no longer references a deleted file.
• Only one moderation module directory remains.
• The build and test suite pass unchanged after removal.