[mobile] docs, multi language support

[agritheory]

Here's a new outline for the docs, which makes sense to implement before setting up the translations API.

# User Documentation

## 1. Scanning System
- Quick Start Guide
  - Basic scanning concepts -what problem(s) does scanning solve
- Working with Lists
  - Navigation behaviors
  - Filtering operations
- Working with Forms
  - What data entry is replaced by scanning
- Common Workflows
  - Receiving goods
  - Stock Transfers
  - Sales Fulfillment
  - Manufacturing
  - Repack
  - Stock Reconciliation
  - Pick List
- Barcode management and BEAM design
  - Supported barcode types

## 2. Demand Management
- Understanding Demand
  - Sales demand tracking
  - Manufacturing demand
  - Soft allocation
- Working with Demand
  - Streamline Receiving
  - Manufacturing allocation
  - Sales fulfillment
- Reports and Analysis
  - Demand tracking

## 3. Mobile Interface
- Getting Started
  - Installing the PWA
  - User setup and "Scan to Login" feature
  - Basic navigation
  - Scanner configuration
- Mobile Workflows
  - Receiving
  - Manufacturing
  - Shipping
  - Stock Transfer
- Working Offline
  - Available operations
  - Syncing data
  - Troubleshooting

## 4. Handling Units
- Understanding Handling Units
  - What they are
  - When to use them
  - Benefits and limitations
- Common Operations using Handling Units
  - Creating units
  - Tracking movement
  - Splitting/combining
- Reports
  - Traceability report
  - Audit tools

# Developer Documentation

## 1. Technical Architecture
- System Overview
  - Component structure
  - Decision matrix
  - Event system
- Demand Design
  - Schema
  - SQLite integration
  - Performance considerations
- Integration with ERPNext
  - Hook points
  - Override patterns
  - Custom event handling
- Development Guide
  - Setup
  - Testing
  - Contributing

## 2. Extending BEAM
- Hook System
  - Available hooks
  - Custom actions
  - Event handlers
- Mobile Development
  - Component system
  - Router integration
- API Reference
  - Endpoints
  - Authentication
  - Response formats

## 3. Print Integration
- Print Server Setup
  - CUPS integration
  - Network configuration
  - Troubleshooting
- ZPL Development
  - Code generation
  - Template system
  - Variable handling
- Custom Formats
  - Format creation
  - Preview system
  - Testing