flotilla/CLAUDE.md

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

Flotilla is a Discord-like Nostr client that operates on the concept of "relays as groups/spaces." Built with SvelteKit 2.5 and Svelte 5, it provides messaging, threads, calendar events, and social features across Nostr relays.

Architecture

Core Technology Stack

• SvelteKit 2.5 + Svelte 5 - Reactive UI framework with runes
• Welshman Libraries - Comprehensive Nostr toolkit (@welshman/app, @welshman/net, @welshman/signer, etc.)
• TailwindCSS + DaisyUI - Utility-first styling with component library
• Capacitor 7 - Cross-platform mobile deployment
• TypeScript - Full type safety throughout

State Management Patterns

• Svelte stores with Welshman reactive patterns
• Repository pattern for Nostr event storage with 10k event limit
• Derived stores for computed values and real-time updates
• Event-based architecture with reactive data flow

Important Patterns

Finding Code

• Prefer navigating from one file to the next following imports when possible
• If search is necessary, use ack, not grep or rg.

Component Organization

• Components are organized by feature (Chat, Calendar, Profile, Space)
• Use existing components from /lib/components/ before creating new ones
• Follow the established naming convention (PascalCase, descriptive names)

Routing Structure

• Dynamic routes: /spaces/[relay]/[room] for relay-based navigation
• All routes use the +layout.svelte for app shell and initialization
• Route helpers in /src/app/routes.ts for URL generation

Nostr Event Handling

• Events flow through the repository pattern in state.ts
• Use Welshman utilities for event validation and parsing
• Handle both plain and gift-wrapped events for privacy
• Prefer seconds to milliseconds when handling nostr events.

Styling Conventions

• TailwindCSS with DaisyUI components
• Dark/light theme support via CSS custom properties
• Responsive design with mobile-first approach
• Custom color scheme configurable via environment variables
• When styling html, prefer flex/gap classes over margin or space-y classes.

Testing Notes

This project does not include formal testing infrastructure. Code quality is maintained through TypeScript strict mode, ESLint, Prettier, and Svelte compiler validation.

Performance Considerations

• Event storage is limited to 10k events with ranking system
• Components use lazy loading patterns
• Large lists should implement virtualization
• Image proxy optimization for external content