---
mode: 'agent'
description: Create a new implementation plan file for new features, refactoring existing code or upgrading packages, design, architecture or infrastructure.
tools: ['changes', 'codebase', 'editFiles', 'extensions', 'fetch', 'githubRepo', 'openSimpleBrowser', 'problems', 'runTasks', 'search', 'searchResults', 'terminalLastCommand', 'terminalSelection', 'testFailure', 'usages', 'vscodeAPI']
---
# Implementation Plan Update Prompt

**PRIMARY DIRECTIVE**: Your goal is to create a new implementation plan file for `${input:PlanPurpose}`. 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
- All task descriptions must include specific file paths, function names, and exact implementation details
- No task should require human interpretation or decision-making

**AI-OPTIMIZED IMPLEMENTATION STANDARDS**:

- Use explicit, unambiguous language with zero interpretation required
- Structure all content as machine-parseable formats (tables, lists, structured data)
- Include specific file paths, line numbers, and exact code references where applicable
- Define all variables, constants, and configuration values explicitly
- Provide complete context within each task description
- Use standardized prefixes for all identifiers (REQ-, TASK-, etc.)
- Include validation criteria that can be automatically verified

**OUTPUT FILE SPECIFICATIONS**:

- Save implementation plan files in `/plan/` directory
- Use naming convention: `[purpose]-[component]-[version].md`
- Purpose prefixes: `upgrade|refactor|feature|data|infrastructure|process|architecture|design`
- Example: `upgrade-system-command-4.md`, `feature-auth-module-1.md`
- File must be valid Markdown with proper front matter structure

**MANDATORY TEMPLATE STRUCTURE**:
All implementation plans must strictly adhere to the following template. Each section is required and must be populated with specific, actionable content. AI agents must validate template compliance before execution.

**TEMPLATE VALIDATION RULES**:

- All front matter fields must be present and properly formatted
- All section headers must match exactly (case-sensitive)
- All identifier prefixes must follow the specified format
- Tables must include all required columns
- No placeholder text may remain in the final output

```md
---
goal: [Concise Title Describing the Package Implementation Plan's Goal]
version: [Optional: e.g., 1.0, Date]
date_created: [YYYY-MM-DD]  
last_updated: [Optional: YYYY-MM-DD]  
owner: [Optional: Team/Individual responsible for this spec]
tags: [Optional: List of relevant tags or categories, e.g., `feature`, `upgrade`, `chore`, `architecture`, `migration`, `bug` etc]
---

# Introduction

[A short concise introduction to the plan and the goal it is intended to achieve.]

## 1. Requirements & Constraints

[Explicitly list all requirements & constraints that affect the plan and constrain how it is implemented. Use bullet points or tables for clarity.]

- **REQ-001**: Requirement 1
- **SEC-001**: Security Requirement 1
- **[3 LETTERS]-001**: Other Requirement 1
- **CON-001**: Constraint 1
- **GUD-001**: Guideline 1
- **PAT-001**: Pattern to follow 1

## 2. Implementation Steps

### Implementation Phase 1

- GOAL-001: [Describe the goal of this phase, e.g., "Implement feature X", "Refactor module Y", etc.]

| Task | Description | Completed | Date |
|------|-------------|-----------|------|
| TASK-001 | Description of task 1 | ✅ | 2025-04-25 |
| TASK-002 | Description of task 2 | |  |
| TASK-003 | Description of task 3 | |  |

### Implementation Phase 2

- GOAL-002: [Describe the goal of this phase, e.g., "Implement feature X", "Refactor module Y", etc.]

| Task | Description | Completed | Date |
|------|-------------|-----------|------|
| TASK-004 | Description of task 4 | |  |
| TASK-005 | Description of task 5 | |  |
| TASK-006 | Description of task 6 | |  |

## 3. Alternatives

[A bullet point list of any alternative approaches that were considered and why they were not chosen. This helps to provide context and rationale for the chosen approach.]

- **ALT-001**: Alternative approach 1
- **ALT-002**: Alternative approach 2

## 4. Dependencies

[List any dependencies that need to be addressed, such as libraries, frameworks, or other components that the plan relies on.]

- **DEP-001**: Dependency 1
- **DEP-002**: Dependency 2

## 5. Files

[List the files that will be affected by the feature or refactoring task.]

- **FILE-001**: Description of file 1
- **FILE-002**: Description of file 2

## 6. Testing

[List the tests that need to be implemented to verify the feature or refactoring task.]

- **TEST-001**: Description of test 1
- **TEST-002**: Description of test 2

## 7. Risks & Assumptions

[List any risks or assumptions related to the implementation of the plan.]

- **RISK-001**: Risk 1
- **ASSUMPTION-001**: Assumption 1

## 8. Related Specifications / Further Reading

[Link to related spec 1]  
[Link to relevant external documentation]
```