# Pattern Doc Entity
### Scope
- **Purpose**: Document recurring architectural decisions in `workspace_tools` so developers understand the design intent and can apply the same patterns elsewhere.
- **Responsibility**: Describe each architectural pattern — its problem context, chosen solution, applicability conditions, and trade-offs.
- **In Scope**: Workspace root resolution fallback strategy and any other significant design patterns that shape the crate's behavior.
- **Out of Scope**: API method documentation (see `api/`), concrete Rust implementations, and per-feature scope definitions (see `feature/`).
### Overview Table
| 001 | [Workspace Resolution Fallback Chain](001_workspace_resolution_fallback.md) | Multi-strategy ordered fallback for workspace root detection across deployment contexts | ✅ |