Open-source .NET document management application purpose-built around PDF storage and retrieval, with full-text-indexed search across either a single-user SQLite database or a shared multi-user database (on-premises or cloud). Supports bulk or automated ingestion via watched folders, metadata tagging (title, author, subject, category, keywords), splitting ('bursting') multi-page PDFs, per-document state flags, and inline notes with search-term-snippet previews. Aimed at personal or small-team archives rather than enterprise DMS platforms.