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Introduction

This book documents the current Lapis Notes architecture as implemented in this monorepo on 19 April 2026. It is a current-state description, not a future-state design.

The repository is organized around four primary layers:

  • a browser-first workspace shell in packages/workspace
  • an Obsidian-like runtime and compatibility layer in packages/api
  • a shared Svelte UI kit in packages/ui
  • several feature and plugin packages in packages/plugins

Use this spec to understand where behavior lives today, trace boot and data flows, and capture follow-up decisions as ADRs.

Where the codebase is incomplete or ambiguous, the pages call that out directly. The current desktop packaging is one example: checked-in build artifacts exist, but the source package shape is not yet fully represented in the workspace metadata.