Docs: Add README and System Architecture Documentation

README.md

@@ -1,2 +1,57 @@
-# TaskTracker
-Production-ready TaskTracker backend built with FastAPI, PostgreSQL, Docker, Kubernetes, Terraform and CI/CD practices. Includes migrations, structured JSON logging, health checks, automated testing and GitHub workflow automation.
+# TaskTracker Backend
+
+TaskTracker is a FastAPI-based backend application for managing users and tasks.
+
+---
+
+## Tech Stack
+
+- FastAPI
+- PostgreSQL
+- SQLAlchemy
+- Pytest
+- Docker (Upcoming)
+- Kubernetes (Upcoming)
+
+---
+
+## Features
+
+### Users
+
+- Create User
+- Get All Users
+- Get User By ID
+- Duplicate Email Validation
+
+### Tasks
+
+- Create Task
+- Get All Tasks
+- Get Task By ID
+- Update Task
+- Delete Task
+- Owner Validation
+- Status Validation
+
+### Health Checks
+
+- /healthz
+- /readyz
+
+---
+
+## Project Structure
+
+```text
+app/
+├── api/
+├── core/
+├── db/
+├── middleware/
+├── models/
+├── schemas/
+└── services/
+
+tests/
+docs/