refactor(docs): consolidate and cleanup documentation

- Delete 9 deprecated/obsolete docs (~6,300 lines removed)
- Move test PDFs to tests/fixtures/ocr-samples/
- Create docs/DEPLOYMENT.md as principal guide
- Create tests/ocr-validation/README.md
- Update all refs for ultrathin monolith architecture
- Update OCR tests to use relative paths

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -88,7 +88,7 @@ This starts SSH tunnel, unified backend (port 8001), and frontend (port 3000).
 - **Shared Database Pool**: Singleton Oracle connection pool shared across all modules
 - **Two-Tier Cache System**: Hybrid L1 (Memory) + L2 (SQLite) for optimal performance
 - **JWT Authentication**: Secure token-based auth with middleware
-- **Microservices**: Independent services with clear separation of concerns
+- **Modular Architecture**: Independent modules with clear separation of concerns
 - **Oracle Integration**: Direct Oracle stored procedure calls with caching
 - **Responsive Design**: Mobile-friendly Vue.js interface
 - **Telegram Integration**: Alternative bot-based interface
@@ -299,30 +299,27 @@ BACKEND_API_URL=http://localhost:8001
 
 ### Quick Reference
 - **`CLAUDE.md`** - Development guide for AI/Claude Code (architecture, cache system, common tasks, troubleshooting)
-- **`docs/ARCHITECTURE_SCHEMA.md`** - Architecture diagrams, cache system, and schemas
-- `docs/MICROSERVICES_GUIDE.md` - Microservices architecture details
-- `DEVELOPMENT_BLUEPRINT.md` - Detailed development plan
+- **`docs/ARCHITECTURE-DECISIONS.md`** - Architecture Decision Records (ADRs)
+- **`docs/MONOLITH_ARCHITECTURE.md`** - Ultrathin monolith architecture details
 
-### Component-Specific
-- `README.md` - Main application README
-- `backend/ modules and CLAUDE.md` - Backend specifics
-- `src/ and docs/MONOLITH_ARCHITECTURE.md` - Frontend guide
-- `E2E testing guide in docs/` - Frontend testing
-- `backend/modules/telegram/README.md` - Telegram bot guide
-- `backend/modules/telegram/TELEGRAM_COMMANDS.md` - Bot commands
+### Module Documentation
+- `docs/data-entry/DATA-ENTRY-MODULE.md` - Data Entry module (SQLModel, workflow, OCR)
+- `docs/telegram/README.md` - Telegram bot integration
+- `docs/telegram/DEPLOYMENT.md` - Telegram single-worker requirement
 
 ### Frontend Styling & CSS
 - `docs/ONBOARDING_CSS.md` - CSS system onboarding guide (start here!)
 - `docs/CSS_PATTERNS.md` - Comprehensive CSS patterns library
 - `docs/DESIGN_TOKENS.md` - Design tokens reference (colors, spacing, typography)
-- `docs/STYLING_GUIDELINES.md` - CSS best practices and conventions
-- `docs/COMPONENT_STYLING.md` - Component-specific styling guide
-- `docs/FORM_TEMPLATE.md` - Standardized form template and patterns
+- `docs/MOBILE_PATTERNS.md` - Mobile UI patterns and components
 
 ### Deployment
-- `DEPLOYMENT_GUIDE.md` - Production deployment (Linux & Windows)
-- `deployment/windows/README.md` - Windows quick start
-- `deployment/windows/docs/WINDOWS_DEPLOYMENT.md` - Complete Windows guide
+- **`docs/DEPLOYMENT.md`** - Principal deployment guide (start here!)
+- `deployment/linux/README.md` - Deploy from Linux/LXC
+- `deployment/windows/README.md` - Deploy from Windows
+
+### Testing
+- `tests/ocr-validation/README.md` - OCR validation tests
 
 ---