Delete CLAUDE.md

CLAUDE.md

@@ -1,68 +0,0 @@
-# CLAUDE.md
-
-This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
-
-## Development Commands
-
-### Local Development
-- `make dev` - Start local Python HTTP server on port 8000
-- `make dev-python` - Start FastAPI server on port 7860 (production-like)
-- `npm run dev` - Alternative Python HTTP server command
-- `python local-server.py 8000` - Direct local server command
-
-### Docker Development
-- `make docker-dev` - Start with docker-compose (recommended for production testing)
-- `make docker-build` - Build Docker image
-- `make docker-run` - Run container with environment variables
-- `make logs` - View Docker logs
-- `make stop` - Stop Docker containers
-
-### Utilities
-- `make install` - Install both Python and Node.js dependencies
-- `make clean` - Remove temporary files and dependencies
-- `make help` - Show all available commands
-
-## Architecture Overview
-
-### Frontend Structure
-This is a **vanilla JavaScript modular application** with no build step. Key architectural patterns:
-
-**Module Organization:**
-- `app.js` - Main application controller, handles UI state and round management
-- `clozeGameEngine.js` - Core game logic, word selection, and scoring
-- `bookDataService.js` - Manages book data fetching from Hugging Face Datasets API
-- `aiService.js` - OpenRouter API integration for AI-powered word selection and contextualization
-- `chatInterface.js` - Modal-based chat UI for contextual hints
-- `conversationManager.js` - AI conversation state management for chat functionality
-- `welcomeOverlay.js` - First-time user onboarding
-
-**Key Architectural Decisions:**
-- **No capitalized words as blanks** - All word selection logic filters out capitalized words (proper nouns, sentence starters)
-- **Progressive difficulty** - Levels 1-2: 1 blank, 3-4: 2 blanks, 5+: 3 blanks
-- **Batch API processing** - Processes both passages simultaneously to avoid rate limits, with fallback to sequential processing
-- **Accessible fonts** - Uses system font stack throughout UI, avoiding decorative fonts for accessibility
-
-### Backend Structure
-**Dual server setup:**
-- `app.py` - FastAPI server for production (HuggingFace Spaces), handles environment variable injection
-- `local-server.py` - Simple HTTP server for local development
-
-**Environment variable handling:**
-- Production: FastAPI injects API keys via meta tags, read by `init-env.js`
-- Local: Environment variables accessed directly via `process.env` or `window`
-
-### Data Flow
-1. **Game Initialization**: BookDataService fetches book metadata from HuggingFace
-2. **Passage Processing**: AIService processes passages via OpenRouter API for word selection and contextualization
-3. **Word Selection**: Multi-layered selection (AI → manual fallback → emergency fallback) with capitalization filtering
-4. **Chat System**: Context-aware conversation manager tracks per-blank question state
-
-### API Dependencies
-- **OpenRouter API** - AI word selection, contextualization, and chat responses (Google Gemma 3)
-- **HuggingFace Datasets API** - Book content and metadata retrieval
-- **External**: CDN-hosted Tailwind CSS and Google Fonts
-
-### Styling Architecture
-- **CSS Custom Properties** - Consistent theming with `--aged-paper`, `--typewriter-ink` variables
-- **Accessible Design** - System fonts, proper contrast, keyboard navigation
-- **Responsive Layout** - Mobile-first design with progressive enhancement