Implement API Security Middleware and Rate Limiting

[coderabbitai]

🛡️ Security Headers & API Protection

Description

Harden the API by implementing rate limiting, security headers, and abuse protection middleware — especially important for a security-focused platform like TENET.

Tasks

• Implement rate limiting (e.g., per IP, per API key)
• Add security headers (CORS, X-Content-Type-Options, X-Frame-Options, HSTS, etc.)
• Enforce request size limits
• Add abuse protection mechanisms
• Implement IP throttling
• Document API hardening decisions in the security docs

Difficulty: 🔴 Hard

Labels: security enhancement production-ready SSoC26

Especially relevant because TENET itself is a security-focused platform — let's make sure it's secure too!

[agsaru]

@S3DFX-CYBER Can i work on this issue under SSoC26 ?