🛡️ Sentinel: [CRITICAL] Fix hardcoded token bypass for XML-RPC

[Snider]

🚨 Severity: CRITICAL
💡 Vulnerability: A hardcoded token (xrpc-9f8e7d6c5b4a) was present in server-php/config/conf.d/wordpress.conf which allowed bypassing the Nginx block on /xmlrpc.php. Hardcoded secrets are a critical security vulnerability, as they cannot be securely rotated and are exposed in version control.
🎯 Impact: If exploited or leaked, this would allow an attacker to make XML-RPC requests against the WordPress instances, potentially leading to brute force attacks, DDoS amplification, or exploitation of XML-RPC specific vulnerabilities.
🔧 Fix: Replaced the token-based bypass with an unconditional deny all; block for /xmlrpc.php, preventing any access and removing the hardcoded secret from the configuration entirely.
✅ Verification: Verified that the hardcoded string xrpc-9f8e7d6c5b4a is completely removed from the Nginx configuration via grep. Also created a .jules/sentinel.md journal entry with critical learnings.

---

PR created automatically by Jules for task 17025297211965933602 started by @Snider

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.