agentic-project-template: Command for Codex

Implementation Prompt

Implement the requested changes using the Agentic Engineering Methodology.

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Objective

Implement the approved engineering contract.

The implementation should:

• remain within the approved scope;
• preserve repository consistency;
• respect the documented architecture;
• follow the documented engineering conventions;
• produce production-ready code.

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Repository Context

Before implementation, review the repository in the following order:

1. AGENTS.md
2. docs/project/PROJECT.md
3. docs/project/ROADMAP.md
4. docs/project/ARCHITECTURE.md
5. docs/project/ENGINEERING.md
6. Relevant ADRs
7. Active implementation plan
8. docs/project/PROGRESS.md

Confirm that implementation is authorized by an active approved plan.

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Implementation Rules

Implement only the approved scope.

Respect:

• architectural boundaries;
• engineering conventions;
• repository organization;
• project validation requirements.

Do not:

• redesign the architecture;
• modify project goals;
• introduce unrelated refactoring;
• implement future roadmap phases;
• add speculative abstractions;
• silently expand scope.

Prefer the simplest implementation that satisfies the documented requirements.

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Documentation

If implementation changes:

• architecture;
• engineering decisions;
• repository workflow;
• permanent project knowledge;

update the appropriate documentation as part of the same change.

Do not leave the repository in an inconsistent state.

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Validation

Before considering the implementation complete:

• verify the acceptance criteria;
• execute the validation workflow defined in ENGINEERING.md;
• ensure documentation is consistent;
• confirm no unrelated changes remain.

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Deliverable

Provide:

1. Implementation Summary
2. Files Changed
3. Validation Performed
4. Documentation Updated
5. Follow-up Work Requiring a New Implementation Plan

Do not propose additional features unless explicitly requested.