Implements a reusable actor-based task execution system with work-stealing, pause/resume, cancellation, and error handling. The `Message` enum drives state transitions (Abort, Pause, Resume, Cancel) and workers dynamically pick tasks from a shared queue. Isolated as a standalone crate with minimal dependencies, suitable for any Rust project needing parallel background job execution.

Parses Open Location Code (Plus Codes) from EXIF metadata, providing latitude/longitude bounds in an optimized way. Demonstrates non-trivial string processing and coordinate math. The module is self-contained within the `media-metadata` crate, which is a focused metadata extraction library that could be reused in other media-related projects.

Provides constant-time comparison and memory operations (CTEq, CTCopy) to prevent timing side-channel attacks. The `Protected<T>` wrapper ensures zeroization on drop, and the module integrates with `secrecy` crate for sensitive data. This crate is fully independent and exemplifies careful cryptographic engineering, suitable for any Rust project requiring secure memory handling.