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Implement or update support for an underlying agent CLI in Ralph after specs are defined, including factory wiring and tests.

Create or update agent integration specs before implementation. Use this whenever a request is about defining how a new or existing agent should behave in Ralph.

Execute shell commands with strict adherence to non-interactive flags and environment variables to prevent hanging in OpenCode's headless environment.

PHP coding conventions and architecture patterns for this project.

Generate comprehensive technical specifications for usage with Ralph.

Use when you need to locate definitions of classes, functions, constants, types, or symbols in the application code. Before searching individual files, run Repomix with stdout output to capture a snapshot and base the search on that content.

Prefer feature-centric architecture with Vertical Slice for AI-assisted systems while avoiding dogmatic over-engineering. Use when defining project structure, deciding architecture fit, refactoring layered code, or implementing slice that blend cleanly with Domain-Driven Design, Hexagonal Architecture, and layered conventions.