Central document abstraction that converts between Algolia objects, database models, and the internal Document struct. Provides `NewFromAlgoliaObject`, `NewFromDatabaseModel`, and `ToAlgoliaObject` methods, enabling clean separation between search and persistence layers. This module is isolated (no imports of internal packages) and can be reused in any Go project needing a document model with multiple representations.

Directly manipulates DOCX files (ZIP archives) to insert header tables and update core properties without relying on Microsoft Graph APIs. Contains functions like `UpdateDocxHeaderTable`, `generateTableRow`, and `generateStatusXML` that build XML for Word tables. This is a non-trivial pattern for programmatically editing Word documents and can be extracted for any project needing to generate or modify DOCX content server-side.

Contains `CompareAlgoliaAndDatabaseDocument`, a function that logs detailed differences between a document's Algolia object and its database model. Used in approval and mutation handlers to detect drift. Also includes reusable helpers like `decodeRequest` (strict JSON decoding with error wrapping) and `parseResourceIDFromURL`. The comparison function is generic enough to be adapted for any dual-storage validation scenario.

Implements exponential backoff with jitter for Google Workspace API calls using the `cenkalti/backoff` library. Provides a `Backoff` function with configurable initial interval and max elapsed time, used across Drive, Docs, and People API calls. This is a clean, reusable resilience pattern that can be extracted for any external API interaction that needs retry logic.

A generic dropdown list component built on Floating UI, supporting checkable items, actions, links, and toggle buttons. It handles keyboard navigation, positioning, and async item loading. This is a high-quality, self-contained UI primitive that could be reused in any Ember project or even extracted to a standalone addon.

The background document indexer service implemented with functional options (`WithAlgoliaClient`, `WithDatabase`, etc.) for dependency injection. It polls folder timestamps, processes modified documents, extracts text (capped at 85KB), and indexes to Algolia. The design supports both Google Workspace and SharePoint backends through a common interface. The functional options pattern and clean separation of concerns make this a reusable template for building background indexing services in Go.

TypeScript service for the Word add-in that handles document header formatting: detecting edit mode, building header tables with status badges, setting document properties, and generating hyperlinks. Uses Office.js APIs extensively and demonstrates a non-obvious pattern for programmatically inserting formatted tables into Word documents from a task pane. Isolated enough to be reused in other Office add-in projects.