Implements a record source priority system (API > NotionMCP > desktop) with tombstone metadata, fallback promotion, and omission reconciliation. This pattern is reusable for any multi-source data ingestion pipeline where source quality varies and records may be deleted or updated from different origins.

Contains a recursive JSON walker (`ExportFields`) that identifies and removes signed URL credentials (e.g., AWS S3 presigned URLs) from stored JSON fields and rendered text. This is a non-obvious data sanitization pattern that preserves local recovery payloads while preventing credential leakage in exports and share snapshots.

Provides publish/subscribe/update operations for git-backed snapshots of the Notion archive. It compresses data (JSONL), Markdown, and a manifest into a git repository, enabling versioned sharing and merge/restore imports. The pattern is isolated and could be adapted for any local-first application needing offline-friendly, git-based data distribution.

Exports Notion pages to normalized Markdown with YAML front matter, database properties, and rendered blocks. Handles Unicode-safe file naming, emoji removal, and multibyte truncation. This module is self-contained and could be reused for exporting any structured note-taking data to Markdown.