refactor: organize api_proccesor.js into domain-specific folders

[CarlyAThomas]

Changes made:

• Split monolithic 419-line api_proccesor.js into 14 organized files
• Created domain folders: curriculum/, dashboard/, student/, legacy/
• One function per file for better discoverability and maintainability
• Updated imports in 6 files (components and pages)
• No logic changes - pure organizational refactor
• Original api_proccesor.js preserved for safety
• Added visual documentation (mermaid.md) and refactor summary

Checklist:

• I have read freeCodeCamp's contribution guidelines.
• My pull request has a descriptive title (not a vague title like Update index.md)

There is not an associated issue for this PR.

Overview

Reorganized the monolithic util/api_proccesor.js (419 lines) into a clean, domain-specific folder structure with one function per file.

This is a pure refactor - no logic changes, only organizational improvements for better maintainability.

📁 New Structure

util/
├── curriculum/ # Curriculum metadata & fetching (4 files)
├── dashboard/ # Dashboard data transformation (2 files)
├── student/ # Student progress & data (5 files)
└── legacy/ # Deprecated v9-incompatible functions (3 files)

Total: 14 new organized files from 16 functions in the original monolithic file

See the mermaid diagram for a visual overview of the complete structure, dependencies, and imports.

✅ Changes Made

• Preserved: Original util/api_proccesor.js remains unchanged for safety
• Created: Domain-specific folders with one function per file
• Updated: Import statements in 6 files (components and pages)
• Added: Documentation (REFACTOR_SUMMARY.md, mermaid.md)

Files Modified (Import Changes Only)

1. components/DetailsDashboard.js
2. components/DetailsDashboardList.js
3. components/dashtable_v2.js
4. pages/dashboard/[id].js
5. pages/dashboard/v2/[id].js
6. pages/dashboard/v2/details/[id]/[studentEmail].js

🎯 Benefits

• Easy to Find: Go directly to the file you need instead of searching 419 lines
• Clear Organization: Related functions grouped by domain
• Better Maintainability: One function per file = easier to understand and modify
• No Breaking Changes: Only import paths changed, all logic preserved

🧪 Testing

• ✅ ESLint: No errors
• ✅ Prettier: All files formatted
• ✅ Import Resolution: All imports validated
• ✅ No logic changes - pure organizational refactor

📊 Visual Reference

See mermaid.md for an interactive diagram showing all organized folders, files, dependencies, and page imports.