# Fumadocs Restoration - Phases 1-2 Complete

## Summary

Successfully restored and integrated the Fumadocs documentation site into the frontend monorepo.

## Completed Work

### Phase 1: Assessment & Preparation

**Analyzed archived setup:**
- Reviewed `/ARCHIVE/DOCUMENTATION/docs-site/package.json` - identified core dependencies
- Reviewed `next.config.ts` and `source.config.ts` - understood configuration needs
- Identified ~50+ MDX content files in archive
- Noted extensive documentation in `docs/` directory

**Key findings:**
- Fumadocs v16+ uses new runtime API (not old `getPage`/`getPages`)
- Archive used manual MDX compilation, not fumadocs collections
- Core deps needed: fumadocs-core, fumadocs-mdx, fumadocs-ui, fumadocs-openapi
- Deprecated deps to skip: jsdoc, typedoc (use fumadocs-openapi instead)

### Phase 2: Monorepo Integration

**Created docs app structure:**
```
frontend/apps/docs/
├── app/
│   ├── layout.tsx (RootProvider from fumadocs-ui/provider/next)
│   ├── page.tsx (landing page)
│   ├── layout.config.tsx (shared nav config)
│   ├── global.css (Tailwind + design tokens)
│   └── docs/
│       ├── layout.tsx (DocsLayout with sidebar)
│       └── [[...slug]]/page.tsx (dynamic routes)
├── content/docs/
│   ├── index.mdx (welcome page)
│   └── meta.json (navigation)
├── source.config.ts (fumadocs-mdx config)
├── next.config.ts (Next.js + MDX)
├── tailwind.config.ts (design system)
├── tsconfig.json (extends workspace)
├── package.json (@tracertm/docs)
└── README.md (documentation)
```

**Package.json optimizations:**
- Removed jsdoc, typedoc (not needed with fumadocs-openapi)
- Removed unused remark/rehype plugins
- Added only essential fumadocs packages
- Used React 19.2.0 from workspace
- Total: 208 packages (optimized from original)

**Configuration files:**
- `next.config.ts` - Clean config with optimizePackageImports experiment
- `source.config.ts` - MDX processing with GFM, syntax highlighting (Shiki)
- `tailwind.config.ts` - Custom design tokens (removed fumadocs preset dependency)
- `postcss.config.mjs` - Standard Tailwind setup
- `tsconfig.json` - Extends workspace root

**Workspace integration:**
- Added to `frontend/package.json` workspaces
- Added scripts: `dev:docs`, `build:docs`
- Integrated with Turbo pipeline (build/dev/typecheck tasks)
- Dev server on port 3001

**Dependencies installed:**
- Core: fumadocs-core@16.4.11, fumadocs-mdx@14.2.6, fumadocs-ui@16.4.11
- Next.js: next@16.1.6, React 19.2.0
- Tailwind: tailwindcss@3.4.19, autoprefixer, postcss
- UI: Radix UI components, cmdk, lucide-react
- Total install time: 38.24s

**Build & dev verification:**
- ✅ Dev server starts successfully in 2.4s
- ✅ Build completes successfully
- ✅ Generates 4 static pages (/, /_not-found, /docs)
- ✅ TypeScript compilation passes
- ✅ Turbo recognizes @tracertm/docs package
- ✅ Can run via `bun run dev:docs` from frontend root

## Technical Details

### API Changes Handled

The archive used old fumadocs API:
```ts
// Old (archive)
const page = docs.getPage(slug);
const pages = docs.getPages();
```

New fumadocs runtime API would be:
```ts
// New (fumadocs-mdx v14+)
import { docs } from '@/.source/server';
const page = await docs.get(slug);
const pages = await docs.all();
```

For Phases 1-2, implemented simplified version:
```ts
// Current (minimal working version)
async function getPageData(slug?: string[]) {
  // Manual content loading
  // To be replaced with full MDX collections in Phase 3
}
```

### Import Fixes

Fixed module resolution issues:
- `fumadocs-ui/provider` → `fumadocs-ui/provider/next` (correct export)
- `fumadocs-ui/tailwind-plugin` → Manual Tailwind config (no export exists)
- Added `global.d.ts` for CSS module declarations

### Design System

Implemented full design tokens in `global.css`:
- Light/dark mode HSL color variables
- Consistent spacing/radius system
- Matches Fumadocs UI expectations
- Works without fumadocs tailwind preset

## Files Created

**App files (10):**
1. `/frontend/apps/docs/app/layout.tsx`
2. `/frontend/apps/docs/app/page.tsx`
3. `/frontend/apps/docs/app/global.css`
4. `/frontend/apps/docs/app/layout.config.tsx`
5. `/frontend/apps/docs/app/docs/layout.tsx`
6. `/frontend/apps/docs/app/docs/[[...slug]]/page.tsx`
7. `/frontend/apps/docs/package.json`
8. `/frontend/apps/docs/next.config.ts`
9. `/frontend/apps/docs/source.config.ts`
10. `/frontend/apps/docs/tsconfig.json`

**Config files (4):**
11. `/frontend/apps/docs/tailwind.config.ts`
12. `/frontend/apps/docs/postcss.config.mjs`
13. `/frontend/apps/docs/.gitignore`
14. `/frontend/apps/docs/global.d.ts`

**Content files (2):**
15. `/frontend/apps/docs/content/docs/index.mdx`
16. `/frontend/apps/docs/content/docs/meta.json`

**Documentation (1):**
17. `/frontend/apps/docs/README.md`

**Modified files (1):**
18. `/frontend/package.json` (added dev:docs, build:docs scripts)

## Success Criteria Met

✅ **Basic infrastructure working**
- Dev server starts on port 3001 ✓
- No compilation errors ✓
- TypeScript passes ✓

✅ **Monorepo integration complete**
- Added to workspace ✓
- Turbo recognizes package ✓
- Can run from frontend root ✓

✅ **Build succeeds**
- `bun run build` completes ✓
- Static pages generated ✓
- No build errors ✓

✅ **Accessible in browser**
- Landing page accessible at http://localhost:3001/ ✓
- Docs route accessible at http://localhost:3001/docs ✓

## Performance Metrics

- **Install time:** 38.24s (208 packages)
- **Dev server startup:** 2.4s
- **Build time:** ~14s (including TypeScript + page generation)
- **Static pages:** 4 (/, /_not-found, /docs, /docs/[[...slug]])

## Next Steps (Phases 3-4)

**Phase 3: Content Migration**
1. Implement full MDX collection API using fumadocs runtime
2. Migrate content from `ARCHIVE/DOCUMENTATION/docs-site/content/`
3. Migrate content from `docs/` directory
4. Set up proper navigation structure in meta.json files
5. Add search functionality

**Phase 4: OpenAPI & Optimization**
1. Integrate fumadocs-openapi for API documentation
2. Generate API docs from FastAPI schema
3. Optimize build performance (caching, code splitting)
4. Add deployment configuration
5. Performance testing and optimization

## Commands Reference

```bash
# Development
cd frontend
bun run dev:docs
# OR
cd frontend/apps/docs
bun run dev

# Build
cd frontend
bun run build:docs
# OR
cd frontend/apps/docs
bun run build

# Production
cd frontend/apps/docs
bun run start

# Type check
cd frontend/apps/docs
bun run typecheck

# Turbo commands
cd frontend
turbo run build --filter=@tracertm/docs
turbo run dev --filter=@tracertm/docs
```

## URLs

- **Landing:** http://localhost:3001/
- **Docs:** http://localhost:3001/docs
- **API (future):** http://localhost:3001/api

## Notes

- Archive used manual MDX compilation - we'll use fumadocs collections in Phase 3
- Simplified implementation for Phases 1-2 to get infrastructure working
- Full MDX processing and content migration deferred to Phase 3
- OpenAPI integration deferred to Phase 4
- No search yet - will add in Phase 3

---

**Status:** ✅ Phases 1-2 Complete
**Date:** 2026-01-30
**Duration:** ~45 minutes
