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Engineering Stage

ES-105 — Navigation

Understand the ES-105 workflow, repository locations, and design evidence path.

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ES-105 Navigation

Purpose

This page explains how to move through ES-105 and where design artifacts belong.

ES-105 connects architecture evidence to implementation readiness. Navigation must preserve that transition: architecture defines responsibility; design makes responsibility implementable.

ES-105 path

README
  ↓
navigation.md
  ↓
engineering_context.md
  ↓
activities.md
  ↓
evidence.md
  ↓
outputs.md
  ↓
readiness_gate.md
  ↓
stage_manifest.md
  ↓
ES-106

Repository areas used in this stage

engineering/ES-105/              guidance
template-library/design/         reusable design templates
examples/lmu-coicp/design/       completed reference examples
docs/design/                     project-specific design evidence

What to copy

Copy templates from template-library/design/ into docs/design/, then complete them for your project.

Do not edit the original templates.

Expected project artifacts

docs/design/design_overview.md
docs/design/interface_design.md
docs/design/data_design.md
docs/design/workflow_design.md
docs/design/access_control_design.md
docs/design/ai_interaction_design.md
docs/design/error_and_exception_design.md
docs/design/technical_decision_records.md
docs/design/design_review.md
docs/design/design_readiness_summary.md

Traceability expectation

Design decisions should trace to at least one of:

  • architecture component;
  • architecture decision record;
  • functional requirement;
  • nonfunctional requirement;
  • constraint;
  • risk;
  • evidence flow;
  • AI-control boundary;
  • access-control rule;
  • workflow requirement.

Untraceable design decisions should be challenged.

Engineering control point

ES-105 is complete only when design evidence is specific enough for ES-106 to evaluate implementation readiness without relying on memory, assumptions, or private conversations.

Common pitfall

Do not scatter design decisions across chat, issue comments, or code comments only. Important design choices need durable repository evidence.

Engineering insight

A design that cannot be found later cannot guide implementation, testing, maintenance, or review.

Continue to Engineering Context

Understand why design is an engineering evidence stage, not merely a pre-coding activity.

Continue to Engineering Context →