security: Audit dangerouslySetInnerHTML usage

[cypriannwokolo2-creator]

Description

Multiple files use dangerouslySetInnerHTML which can introduce XSS vulnerabilities.

Files to Audit

• src/app/layout.tsx (5 instances)
• src/app/docs/[[...slug]]/page.tsx
• src/app/p/[[...slug]]/page.tsx

Requirements

• Audit all dangerouslySetInnerHTML usage
• Sanitize HTML content before rendering
• Add Content Security Policy headers
• Document security implications

Acceptance Criteria

• All HTML content sanitized
• CSP headers configured
• No XSS vulnerabilities
• Security documentation updated

Priority

High