[Refactor] [Studio] Redesign template architecture and unify rendering systems

[Gautam25Raj]

Summary

This PR introduces an early-stage Studio template architecture refactor focused on exploring unified document rendering, shared template utilities, and template-aware editor flows.

This is an beta-quality implementation and is not expected to be fully functional yet.

Refactor

Template Architecture

• Started restructuring resume template infrastructure
• Added early Executive Clarity and Precision ATS template structures
• Introduced initial shared rendering utilities for templates
• Began unifying PDF and web rendering flows

Editor & Routing

• Added early search param-based template resolution
• Updated toolbar and editor flows for template-aware navigation
• Improved internal routing structure for future template support

Shared Systems

• Began consolidating shared fonts, icons, and document utilities
• Refactored document and resume types for better consistency
• Added initial rendering contracts and validation structure

Beta Status

⚠️ Known Limitations

• Build and development workflows may not work
• Some implementations are incomplete or partially wired
• Template rendering flows are still under active migration
• Existing integrations may require updates before this becomes stable

Notes

• Breaking changes expected
• Beta release for architecture testing only
• Not production-ready

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📝 Documentation update
• 🧪 Tests (adding or updating tests)

Checklist

• I have read the CONTRIBUTING.md document.
• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.
• Any dependent changes have been merged and published in downstream modules.