🛡️ Sentinel: [HIGH] Fix HTTP Parameter Pollution and Path Traversal in API Service

[belpythons]

• 🚨 Severity: HIGH
• 💡 Vulnerability: Unsanitized dynamic inputs (id, roadmapId, topicId, lessonId, query) were passed directly into template literals in the src/services/apiService.js API endpoints, exposing the application to HTTP Parameter Pollution and Path Traversal.
• 🎯 Impact: Malicious actors could inject special characters into path variables to manipulate URL structures, access unintended endpoints, or alter the logic of downstream HTTP requests.
• 🔧 Fix: Wrapped all dynamic path variables injected into template literals with encodeURIComponent() to securely encode special characters and maintain precise URL structure boundaries.
• ✅ Verification: Verified that endpoints in apiService.js safely encode path variables before generating the HTTP requests. Ran pnpm run lint and pnpm run build to confirm no new regressions were introduced (existing linter and build warnings were pre-existing).

---

PR created automatically by Jules for task 11813830861995075245 started by @belpythons

[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.