Implements a JsonPatch extraction utility with a PatchType enum (Add, Remove, Replace, Copy, Move, Test) that parses JSON patch operations from log streams. The module is self-contained, uses serde for deserialization, and provides a clean abstraction for processing structured log diffs. It can be extracted into any Rust project needing JSON patch parsing without modification.

Provides a comprehensive provider error classification system that normalizes errors from various AI providers into structured types (retryable, context-length overflow, permission, etc.). It includes regex-based pattern matching for overflow messages, retry-after header parsing, and API error body extraction. This module is reusable for any application integrating multiple AI providers and needing consistent error handling.

Defines an AsyncResourceState type and helper functions (initialAsync, beginLoad, succeed, fail) that implement a state machine for asynchronous UI data loading. It standardizes loading, success, error, and empty states across React components, reducing boilerplate. The pattern is framework-agnostic and can be extracted into any TypeScript project needing predictable async state management.

Implements a structured markdown config parser (ConfigMarkdown.parse) that extracts paths, descriptions, titles, names, URLs, and nested tool configurations from markdown headers and frontmatter. It handles edge cases like dollar-sign patterns and quoted descriptions. This module is self-contained and reusable for any application needing to parse configuration embedded in markdown files.