refactor(fe): replace global env throws with lazy runtime boundary

[warisu]

📝 Pull Request Summary

Description

This PR addresses Issue #812 (FE-023) by replacing aggressive root-level script execution crashes with a lazy runtime environment parameter verification architecture.

Key Modifications

• Lazy Evaluation Core Engine: Built LazyEnvValidator to cache configuration lookups, preventing early boot crashes due to missing variables.
• Component-Level Context Boundaries: Developed EnvSafeBoundary.tsx to trap environment evaluation faults locally and render informative error panels without breaking the parent DOM.
• Harness Testing Verification (>90%): Deployed complete Jest test scenarios isolating custom variable lookups, type transformations, and fallback operations.

Closes #812

[drips-wave]

@warisu Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits

[RUKAYAT-CODER]

Great job so far

There’s just one blocker — the workflow is failing. Could you take a look and fix it so all checks pass?
You could pull from the main to get the changes before pushing.