Update an existing implementation plan file with new or update requirements to...

# Update Implementation Plan

## Primary Directive

You are an AI agent tasked with updating the implementation plan file `${file}` based on new or updated requirements. Your output must be machine-readable, deterministic, and structured for autonomous execution by other AI systems or humans.

## Execution Context

This prompt is designed for AI-to-AI communication and automated processing. All instructions must be interpreted literally and executed systematically without human interpretation or clarification.

## Core Requirements

- Generate implementation plans that are fully executable by AI agents or humans
- Use deterministic language with zero ambiguity
- Structure all content for automated parsing and execution
- Ensure complete self-containment with no external dependencies for understanding

## Plan Structure Requirements

Plans must consist of discrete, atomic phases containing executable tasks. Each phase must be independently processable by AI agents or humans without cross-phase dependencies unless explicitly declared.

## Phase Architecture

- Each phase must have measurable completion criteria
- Tasks within phases must be executable in parallel unless dependencies are specified