Digital Twin Module 2 Spec.phr.prompt

---
id: 0001
title: Digital Twin Module 2 Spec
stage: spec
date: 2025-12-10
surface: cli
model: gemini-pro
feature: 001-digital-twin-module-2
branch: 001-digital-twin-module-2
user: unknown
command: "/sp.specify Module 2 — The Digital Twin (Gazebo & Unity) Target audience: Beginner–intermediate robotics/AI students learning simulation tools. Focus: Digital Twin fundamentals using Gazebo and Unity: physics simulation, environment building, sensor simulation (LiDAR, depth, IMU), and basic human-robot interaction. Success criteria: - Produce 2–3 chapters for Module 2 - Each chapter includes a clear explanation, a simple simulation example, and one small task - Reader understands how Gazebo simulates physics and how Unity handles rendering/interactions - Sensor simulation concepts explained clearly with minimal examples Constraints: - Format: Docusaurus markdown - Style: concise, practical, beginner-friendly - Examples must use standard Gazebo/Unity workflows - No advanced custom plugins or large projects Not building: - Full advanced Unity game systems - Complex physics engines or custom Gazebo plugins - Large multi-scene Unity environments"
labels: [spec, new-feature]
links:
  spec: specs/001-digital-twin-module-2/spec.md
files:
- file: specs/001-digital-twin-module-2/spec.md
  action: created
  description: "The main specification document for Module 2 - The Digital Twin."
- file: specs/001-digital-twin-module-2/checklists/requirements.md
  action: created
  description: "Checklist for validating the quality and completeness of the Module 2 specification."
tests: {}
---

## Prompt

Module 2 — The Digital Twin (Gazebo & Unity) Target audience: Beginner–intermediate robotics/AI students learning simulation tools. Focus: Digital Twin fundamentals using Gazebo and Unity: physics simulation, environment building, sensor simulation (LiDAR, depth, IMU), and basic human-robot interaction. Success criteria: - Produce 2–3 chapters for Module 2 - Each chapter includes a clear explanation, a simple simulation example, and one small task - Reader understands how Gazebo simulates physics and how Unity handles rendering/interactions - Sensor simulation concepts explained clearly with minimal examples Constraints: - Format: Docusaurus markdown - Style: concise, practical, beginner-friendly - Examples must use standard Gazebo/Unity workflows - No advanced custom plugins or large projects Not building: - Full advanced Unity game systems - Complex physics engines or custom Gazebo plugins - Large multi-scene Unity environments

## Response snapshot

The feature specification for "Module 2 - The Digital Twin (Gazebo & Unity)" has been successfully created.

**Branch Name**: `001-digital-twin-module-2`
**Spec File Path**: `specs/001-digital-twin-module-2/spec.md`
**Checklist Results**: All items passed validation.
**Readiness**: Ready for the next phase (`/sp.plan`).

## Outcome

- ✅ Impact: Successfully generated a comprehensive feature specification for Module 2, including constitutional alignment, user scenarios, functional requirements, and success criteria.
- 🧪 Tests: N/A (Spec generation, no code tests)
- 📁 Files: `specs/001-digital-twin-module-2/spec.md`, `specs/001-digital-twin-module-2/checklists/requirements.md` were created.
- 🔁 Next prompts: The next logical step is `/sp.plan` to create a plan for implementing this feature.
- 🧠 Reflection: Encountered significant challenges with PowerShell script execution due to argument parsing issues in the environment, leading to a manual workaround for branch creation and spec file writing. The problem was not with the script logic itself but with how the environment handles command-line arguments for PowerShell.

## Evaluation notes (flywheel)

- Failure modes observed: Persistent `PositionalParameterNotFound` errors when invoking PowerShell script with long string arguments, even after modifying script parameters.
- Graders run and results (PASS/FAIL): N/A (Manual process due to script execution issues)
- Prompt variant (if applicable): N/A
- Next experiment (smallest change to try): Investigate the exact mechanism of `run_shell_command` execution for PowerShell scripts in this CLI environment to understand and resolve argument parsing issues, possibly by using `Start-Process` with argument lists.