full-stack-todo-app

Stores notifications in localStorage with schema (id, taskId, message, timestamp, read, priority). Provides retrieval methods (getUnread, getAll, markAsRead) and maintains last 50 notifications with automatic cleanup for deleted tasks.

Triggers notifications exclusively for VERY IMPORTANT priority tasks that are incomplete and due within 6 hours. Repeats every 10 minutes with duplicate prevention tracking in memory. Clears tracking when tasks complete or due times pass.

Renders notification bell icon with unread count badge, pulse animations for new notifications, and dropdown panel (320px × max 400px) displaying notification items with purple theme for VERY IMPORTANT tasks. Includes mark-as-read interaction and empty state handling.

Automatically classifies tasks into four priority levels (VERY IMPORTANT, HIGH, MEDIUM, LOW) based on due dates, urgency keywords, and explicit priority settings. Triggers special behaviors for VERY IMPORTANT tasks including notifications and visual emphasis.

Provides comprehensive task filtering across three dimensions (Status, Priority, Due Date) with cumulative AND logic, localStorage persistence, and removable filter chips UI. Supports nine total filter options across the three categories.

Provides fast, case-insensitive text search across task titles, descriptions, and tags with debounced input, relevance ranking, and highlighted matching text. Uses AND logic for multi-token queries and limits results to top 50 for performance.

Provides stable task list sorting across four dimensions (Priority, Due Date, Created Date, Alphabetical) with ascending/descending toggles, tie-breaking rules, and visual sort indicators. Default sort prioritizes VERY IMPORTANT tasks first, then by soonest due date.

Provides categorical organization for tasks using a predefined set of seven standard tags (Work, Personal, Shopping, Health, Finance, Learning, Urgent). Enforces tag validation rules including duplicate prevention and 5-tag maximum per task.

Calculates time-based task status including overdue detection, urgency levels (urgent/upcoming/soon), and relative time displays. Updates temporal status every 60 seconds with timezone-aware comparisons and edge case handling for tasks without due dates.

Better Auth JWT verification for Python/FastAPI backends. Use when integrating Python APIs with a Better Auth TypeScript server via JWT tokens. Covers JWKS verification, FastAPI dependencies, SQLModel/SQLAlchemy integration, and protected routes.

Better Auth TypeScript/JavaScript authentication library. Use when implementing auth in Next.js, React, Express, or any TypeScript project. Covers email/password, OAuth, JWT, sessions, 2FA, magic links, social login with Next.js 16 proxy.ts patterns.

Drizzle ORM for TypeScript - type-safe SQL queries, schema definitions, migrations, and relations. Use when building database layers in Next.js or Node.js applications.

FastAPI patterns for building high-performance Python APIs. Covers routing, dependency injection, Pydantic models, background tasks, WebSockets, testing, and production deployment.

Neon PostgreSQL serverless database - connection pooling, branching, serverless driver, and optimization. Use when deploying to Neon or building serverless applications.

Next.js 16 patterns for App Router, Server/Client Components, proxy.ts authentication, data fetching, caching, and React Server Components. Use when building Next.js applications with modern patterns.