LifeOS - AI Personal Operating System

An AI-powered personal operating system combining Tasks, Planner, Notes with Summaries & Flashcards, Semantic Search, AI Writer, and Shopping List Generator. Built with a local-first architecture using only free and open-source technologies.

Features

• Dashboard: Unified Today view with task stats, schedule preview, and quick actions
• Tasks: Full CRUD with priorities, due dates, and filtering
• Notes Library: Upload text, auto-generate summaries and flashcards
• Plan My Day: AI-powered day scheduling based on your tasks and preferences
• Semantic Search: Search your notes with natural language queries
• AI Writer: Generate emails, summaries, and resume bullets
• Shopping Generator: Create shopping lists from leftovers and preferences
• Dark/Light Theme: System-aware with manual toggle

Quick Start

# Install dependencies
npm install

# Start development server
npm run dev

Open http://localhost:5000 in your browser.

Demo Mode

Click "Try Demo Mode" on the login screen to explore with pre-seeded data:

• Sample tasks with various priorities
• Notes with summaries and flashcards
• Ready-to-use semantic search

Architecture

Frontend: React + Vite + Tailwind + Shadcn/UI
Backend:  Express.js + TypeScript
Storage:  In-memory (local-first demo)
Auth:     bcrypt password hashing

API Endpoints

Method	Endpoint	Description
POST	/api/auth/signup	Create account
POST	/api/auth/login	Login
POST	/api/auth/demo	Start demo mode
GET	/api/dashboard	Dashboard data
CRUD	/api/tasks	Task management
CRUD	/api/notes	Notes library
POST	/api/notes/:id/summarize	Generate summary + flashcards
POST	/api/plan	Generate day schedule
POST	/api/search	Semantic search
POST	/api/ai/writer	Generate text
POST	/api/shopping/generate	Create shopping list

Demo Script (2 minutes)

1. 0:00-0:10 - Login with Demo Mode
2. 0:10-0:25 - Explore Dashboard (stats, today's tasks)
3. 0:25-0:40 - Create a task with priority and due date
4. 0:40-1:00 - Generate day plan from selected tasks
5. 1:00-1:20 - View notes, summarize, use flashcards
6. 1:20-1:35 - Search notes with natural language
7. 1:35-1:50 - Generate an email with AI Writer
8. 1:50-2:00 - Create shopping list from leftovers

Technical Notes

Fallback Implementations

Since this MVP uses no paid APIs:

• Summarization: Extractive algorithm scoring sentences by key phrases
• Flashcards: Pattern matching for definition-style sentences
• Day Planning: Heuristic scheduler respecting productive hours and breaks
• Semantic Search: Simple cosine similarity on word overlap
• AI Writer: Template-based generation

Future Enhancements

1. PostgreSQL persistence with Drizzle ORM
2. Real embeddings with sentence-transformers
3. Local LLM integration (Mistral-7B, Llama)
4. File upload with Tesseract OCR
5. Voice input with Web Speech API

Privacy

LifeOS is designed with local-first principles:

• All data stored locally (in-memory for demo)
• No external API calls required
• No tracking or analytics
• User controls all data

License

MIT License - Free for personal and commercial use.