What problem does it solve? Keeping coding agent context files like CLAUDE.md, copilot-instructions.md, or AGENTS.md synchronized with the current Spec Kit feature plan is a manual, error-prone task. This Skill refreshes the managed Spec Kit section automatically so the agent always points at the latest plan. ## Core Features & Use Cases - Managed Section Updates: Creates, replaces, or appends a delimited Spec Kit block inside one or more agent context files using configurable start and end markers. - Automatic Plan Detection: Discovers the most recently modified specs/<feature>/plan.md when no plan path is provided. - Multi-File Support: Reads context_file and context_files from the agent-context config and validates that all paths stay project-relative, rejecting absolute paths, backslashes, and .. segments. - Use Case: After generating a new feature plan with Spec Kit, run the update script so CLAUDE.md immediately references specs/001-auth/plan.md without manual editing. ## Quick Start Update my agent context file to point at the latest Spec Kit plan.