YuHeng Release History

v0.3 - Current (Multi-User & Status)

Released: May 2026

Multi-User Support

• Database Schema
  • users table with password hashing, roles, and SSO fields
  • user_id foreign key columns on all tables with default system user
  • Composite primary key (user_id, key) for settings table
  • Cascading delete constraints and indexes
• Backend Core
  • UserContext class for current user management
  • Automatic user_id filtering in all PostgresAdapter queries
  • User CRUD operations implementation
  • AuthService with bcrypt password hashing
  • Session management with encrypted storage
• API Endpoints
  • /api/auth/* for login, logout, and status
  • /api/users/* for user management (list, create, update, delete)
  • /api/health endpoint for status monitoring
• Frontend Implementation
  • UserSwitcher dropdown component in header
  • AuthGuard route protection
  • Login page (/login) with user selector + password
  • User management page (/users) for CRUD operations
  • Multi-user mode toggle in settings page
  • Session timeout handling

Backend Status Monitoring

• Health check API returning version and status
• Real-time backend version and connection status on home page
• Auto-redirect to home after settings save

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v0.2 - Recognition Enhancement

Released: Apr 2026

Packaged Food Recognition (OCR)

• Specialized recognition mode for packaged foods and drinks
• OCR via AI for nutrition labels and packaging information
• Automatic nutrient extraction from label text

Multi-Provider LLM Support

• Google Gemini (Gemini 2.5 Flash, Gemini 3 Flash/Pro)
• Zhipu AI (GLM-4V models)
• OpenAI (GPT-4o, GPT-4o mini)
• OpenAI Compatible: DeepSeek, Qwen-VL, GLM-4V, Doubao, etc.
• Model configuration in settings page

Recognition Queue & Guided Retry

• Client-side queue for image recognition tasks
• Multiple photos upload in quick succession
• Asynchronous result handling
• Guided AI retry for failed recognitions

Unit Preferences

• Unit conversion (kcal/kJ, g/oz)
• User-configurable unit preferences in settings

Regional Adaption

• One-click setup for CN/US regions
• Region-specific nutrition target defaults

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v0.1 - Core Foundation

Released: Early 2026

Smart Food Logging

• Photo-based food logging
• AI dish recognition from images
• Text-based meal entry
• Automatic nutritional breakdown

Dashboard & History Tracking

• Daily nutrition stats
• Weekly history view
• Progress tracking over time

Backfilling & Meal Classification

• Support for backfilling meals (Breakfast, Lunch, Dinner, Snack)
• Manual entries
• Automatic meal time classification

Recipe Library

• Recipe re-entry
• Automatic snapshotting of recipe data

Portion Management & Sharing

• Meal sharing with family/friends
• Smart weight scaling
• Portion splitting

Database Migration

• Migrated from SQLite to PostgreSQL
• Drizzle ORM integration
• Database adapter pattern for SQLite and PostgreSQL

Docker Support

• Docker build with persistent database
• Docker Compose configuration
• Automatic migrations on startup

Custom Meal Times

• Configurable meal time windows
• Settings page configuration