Add open source infrastructure and documentation site

Author: TheNightFox-1

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug Report
+about: Something is incorrect or broken in the content, models, or code
+title: "[BUG] "
+labels: bug
+assignees: ''
+---
+
+## What is wrong?
+
+_A clear and concise description of the problem._
+
+## Where does it occur?
+
+_File, section, page, or component where the issue is found._
+
+## Expected behavior
+
+_What should it say or do instead?_
+
+## Steps to reproduce (if applicable)
+
+1. Go to '...'
+2. See error
+
+## Additional context
+
+_Screenshots, links, or any other relevant information._

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Ask a Question / Start a Discussion
+    url: https://github.com/TheNightFox-1/SustainableTogether/discussions
+    about: Use GitHub Discussions for questions, ideas, and open-ended conversations.
+  - name: Contact the Team
+    url: mailto:sustainability@incose.net
+    about: Reach out directly to the SustainableTogether team.

.github/ISSUE_TEMPLATE/content_contribution.md

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+---
+name: Content Contribution
+about: Share a presentation, document, resource, or piece of knowledge
+title: "[CONTENT] "
+labels: content
+assignees: ''
+---
+
+## What are you contributing?
+
+_Brief description of the content (presentation, guide, model, paper, etc.)._
+
+## Topic / Category
+
+_e.g. Sustainability, MBSE, Solar Energy, Systems Thinking, Business Design_
+
+## Source / Author
+
+_Who created it? Is it openly licensed?_
+
+## How to access it
+
+_Link, file attachment, or description of how to include it._
+
+## Why is this relevant to SustainableTogether?
+
+_How does it support the project's mission?_

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature Request / Improvement
+about: Propose a new idea, improvement, or direction for the project
+title: "[IDEA] "
+labels: enhancement
+assignees: ''
+---
+
+## What do you want to improve or add?
+
+_A clear description of your idea._
+
+## Why is this valuable?
+
+_How does this help the community or advance the project's mission?_
+
+## Proposed approach (optional)
+
+_How might this be implemented or structured?_
+
+## Additional context
+
+_Links, references, examples, or related work._

.github/PULL_REQUEST_TEMPLATE.md

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+## Summary
+
+_What does this PR change and why?_
+
+## Type of change
+
+- [ ] Bug fix (corrects something wrong)
+- [ ] New content (documentation, presentation, resource)
+- [ ] Model / system design update
+- [ ] Code (new feature or improvement)
+- [ ] Other: ___
+
+## Related issue(s)
+
+_Closes #_
+
+## Checklist
+
+- [ ] My changes are focused on one topic
+- [ ] I have checked for typos and formatting issues
+- [ ] I have added a description of what changed and why
+- [ ] Any new files are placed in the correct folder
+- [ ] I have read the [Contributing Guidelines](../CONTRIBUTING.md)

.github/workflows/deploy-docs.yml

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+name: Deploy Documentation
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
+      - name: Install dependencies
+        run: pip install -r requirements.txt
+
+      - name: Deploy to GitHub Pages
+        run: mkdocs gh-deploy --force

.gitignore

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+# OS artifacts
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+desktop.ini
+
+# Editor / IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# Python
+__pycache__/
+*.py[cod]
+*.pyo
+*.pyd
+.Python
+env/
+venv/
+.venv/
+ENV/
+*.egg-info/
+dist/
+build/
+.eggs/
+*.egg
+.pytest_cache/
+.coverage
+htmlcov/
+.mypy_cache/
+
+# Node / Web
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+dist/
+.next/
+.nuxt/
+.output/
+.env
+.env.local
+.env.*.local
+
+# MkDocs build output
+site/
+
+# SysML / MBSE model artifacts (common tool outputs)
+*.bak
+*.tmp
+*.lock
+.metadata/
+
+# Jupyter
+.ipynb_checkpoints/
+
+# General
+*.log
+*.zip
+*.tar.gz

CHANGELOG.md

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+# Changelog
+
+All notable changes to SustainableTogether will be documented here.
+
+The format follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+
+---
+
+## [Unreleased]
+
+### Added
+- Open source infrastructure: LICENSE, CONTRIBUTING, CODE_OF_CONDUCT, SECURITY
+- GitHub issue and PR templates
+- GitHub Actions workflow for automated documentation deployment
+- MkDocs documentation site (GitHub Pages)
+- Comprehensive README
+
+---
+
+<!-- Add new releases above this line in the format:
+
+## [1.0.0] - YYYY-MM-DD
+### Added
+### Changed
+### Fixed
+### Removed
+
+-->

CODE_OF_CONDUCT.md

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+# Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders of SustainableTogether pledge to make participation in our community a respectful, inclusive, and harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, education, socio-economic status, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+We pledge to act in ways that contribute to an open, welcoming, diverse, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment:
+
+- Using welcoming and inclusive language
+- Being respectful of differing viewpoints and experiences
+- Gracefully accepting constructive feedback
+- Focusing on what is best for the community and the project
+- Showing empathy towards other community members
+
+Examples of unacceptable behavior:
+
+- The use of sexualized language or imagery
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information without explicit permission
+- Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Enforcement Responsibilities
+
+Project maintainers are responsible for clarifying and enforcing these standards. They will take appropriate and fair corrective action in response to any behavior they deem inappropriate, threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies within all project spaces, including the GitHub repository, issue tracker, pull requests, and any community channels associated with this project.
+
+## Enforcement
+
+Instances of unacceptable behavior may be reported to the project team at **sustainability@incose.net**. All complaints will be reviewed and investigated promptly and fairly. The project team is obligated to maintain confidentiality with regard to the reporter.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant](https://www.contributor-covenant.org), version 2.1.

CONTRIBUTING.md

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+# Contributing to SustainableTogether
+
+Thank you for your interest in contributing! SustainableTogether is an open community project — every contribution counts, whether you're fixing a typo, sharing knowledge, improving the system model, or writing code.
+
+## Who Can Contribute?
+
+Everyone. You don't need to be a systems engineer or sustainability expert. If you care about making sustainable practices more accessible and understandable, you belong here.
+
+## Ways to Contribute
+
+| Type | Description |
+|------|-------------|
+| **Documentation** | Improve guides, fix typos, translate content |
+| **Presentations** | Share slides or materials related to sustainability and MBSE |
+| **System Model** | Extend or refine the SolarX/SustainaSun system model |
+| **Code** | Contribute Python scripts, SysML models, or web tools |
+| **Ideas** | Open an issue to propose a new direction or feature |
+| **Feedback** | Review existing content and suggest improvements |
+
+## Getting Started
+
+1. **Fork** this repository
+2. **Clone** your fork locally
+3. Create a **new branch** for your contribution:
+   ```bash
+   git checkout -b your-branch-name
+   ```
+4. Make your changes
+5. **Commit** with a clear message:
+   ```bash
+   git commit -m "Add: brief description of what you did"
+   ```
+6. **Push** to your fork and open a **Pull Request**
+
+## Contribution Guidelines
+
+- Keep changes focused — one topic per pull request
+- Write clear commit messages (what and why, not just what)
+- If adding documentation, use plain English that anyone can understand
+- If adding code, include a brief comment explaining what it does
+- Reference related issues in your PR description (e.g. `Closes #12`)
+
+## Opening Issues
+
+Use the issue templates provided:
+- **Bug Report** — something is wrong or broken
+- **Feature Request** — propose a new idea or improvement
+- **Content Contribution** — share a resource, presentation, or document
+
+## Code of Conduct
+
+By participating, you agree to abide by our [Code of Conduct](CODE_OF_CONDUCT.md).
+
+## Questions?
+
+Open a [GitHub Discussion](https://github.com/TheNightFox-1/SustainableTogether/discussions) or reach out at **sustainability@incose.net**.