🛡️ Sentinel: [HIGH] Fix XSS Vulnerability in CSP

[EffortlessSteven]

🚨 Severity: HIGH
💡 Vulnerability: The default production Content Security Policy (CSP) configurations in crates/http-middleware and crates/app-http permitted 'unsafe-inline' and 'unsafe-eval' in script-src and style-src directives. This essentially negated the XSS protection benefits of CSP in a production environment.
🎯 Impact: An attacker who manages to inject scripts or styles into the application could bypass CSP restrictions, leading to Cross-Site Scripting (XSS). This could result in session hijacking, unauthorized actions on behalf of the user, or data exfiltration.
🔧 Fix: Removed 'unsafe-inline' and 'unsafe-eval' from the default production CSP in both crates/http-middleware/src/security_headers.rs and crates/app-http/src/middleware/security_headers.rs. The development CSP appropriately retains these directives to ensure local tools and HMR still function. Additionally, logged this critical learning regarding configuration drift in .jules/sentinel.md.
✅ Verification: Ran the full test suites for http-middleware and app-http as well as cargo xtask check, ensuring all automated assertions (which verify that the production CSP is strict and the dev CSP remains permissive) successfully pass.

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PR created automatically by Jules for task 9762205400955003542 started by @EffortlessSteven

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📥 Commits

Reviewing files that changed from the base of the PR and between 3debe49 and e2ae9f4.

📒 Files selected for processing (3)

• .jules/sentinel.md
• crates/app-http/src/middleware/security_headers.rs
• crates/http-middleware/src/security_headers.rs

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Test Results

283 tests   245 ✅  11m 24s ⏱️
 25 suites   38 💤
  1 files      0 ❌

Results for commit e2ae9f4.