A platform-agnostic stroke-aware swipe detector with configurable thresholds (timeout, distance, cross ratio). Isolated and parameterized, it can be extracted for any project needing simple gesture recognition without hardware dependencies.

A platform-aware key-name to key-code mapping with aliases and validation (e.g., rejecting reserved hotkeys). It abstracts OS differences and provides a clean API for key lookup, making it reusable in any application that needs cross-platform keyboard shortcut handling.

Implementation of a radial pie menu controller with held/toggle modes, sector angle calculation, and testable geometry functions. It is self-contained and could be reused for any UI needing an actions ring overlay.

A QObject-based translation manager exposing dictionaries to QML via context property. Supports runtime language switching, fallback keys, and lazy loading. This is a well-isolated i18n pattern that can be reused in any Qt/QML desktop application.

Handles update manifest verification (SHA-256, signature, expiry), archive validation, staging, and atomic replacement (especially on Windows). The manifest schema and verification logic are decoupled from the rest of the app and could serve as a reference for implementing secure self-update in other desktop applications.