* Delete outdated development instructions for Next.js + Tailwind and Python; add comprehensive guidelines for PostgreSQL DBA, Angular, ASP.NET REST APIs, Azure Functions with TypeScript, Bicep, Blazor, CMake with vcpkg, C#, .NET MAUI, GenAIScript, Terraform for Azure, localization, and markdown standards.

* Update documentation and prompts for consistency and clarity

- Standardized description formatting in various markdown files to use single quotes.
- Added error handling utility in update-readme.js for safer file operations.
- Improved title extraction logic in update-readme.js to handle frontmatter more robustly.
- Updated chat modes section in README to reflect new emoji and sorted chat mode links.
- Cleaned up various instruction files for better readability and consistency.
- Ensured all markdown files end with a newline for better compatibility with version control.

* Remove standardize-frontmatter.js script

* Add usage instructions for creating and switching chat modes in README.md

* Update README.md generation script to enhance instructions and usage details for custom chat modes

* Update README.md and update-readme.js for improved instruction clarity and consistency

* Refactor README.md links and update readme script for improved clarity and consistency in instructions

* Update README.md and update-readme.js for improved instruction clarity and consistency

* Changing from a patch to regen approach for the readme

* Bit more cleanup for how to show things in the readme

* Adding missing description

* Another missing description

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>

Following the guide from https://docs.github.com/en/copilot/how-tos/agents/copilot-code-review/using-copilot-code-review\#customizing-copilots-reviews-with-custom-instructions

* Update minimal API prompt for .NET 9 OpenAPI document generation

* Drop guidance on parameter binding attributes

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>

* Fixing line endings and removing dead code

* Missing descriptions due to line endings

* Enforcing that the line endings should be LF

* Potential fix for code scanning alert no. 18: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

* Fixing readme generator

---------

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

* feat: Add security and OWASP instructions

This adds a new instruction file for secure coding practices based on the OWASP Top 10 to guide GitHub Copilot in generating more secure code.

* fix: add YAML front matter to security instructions and correct README link casing

* chore: update README.md after running update-readme.js

* Add prompt for adding a new language to Next.js using next-intl

* Update README and prompt for Next.js i18n integration with next-intl

* Add chat mode

* Update README

* add editFiles tool

* feat: ✨ Add comprehensive Go development instructions

- Introduced a detailed guide for writing Go code adhering to idiomatic practices.
- Covers general instructions, naming conventions, code style, error handling, and security best practices.
- References established resources like Effective Go and Google's Go Style Guide.

* feat: ✨ Add Go development instructions

- Introduced guidelines for writing Go code that adhere to idiomatic Go practices and community standards.

* feat: Add security and OWASP instructions

This adds a new instruction file for secure coding practices based on the OWASP Top 10 to guide GitHub Copilot in generating more secure code.

* fix: add YAML front matter to security instructions and correct README link casing

* chore: update README.md after running update-readme.js

* feat: add the most comprehensive, practical, and engineer-authored performance optimization instructions. Covers frontend, backend, and database best practices with actionable guidance, scenario-based checklists, troubleshooting, and pro tips. Updates README.md to include this new resource.

* Apply suggestion from @aaronpowell

* Apply suggestion from @aaronpowell

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>

* Adding badges

* Adding links to easy-install into vscode/insiders

This does mean that the layout of the readme needs a change, moving to a table layout so that we keep better alighnment

* handing different types

* Using the vscode.dev redirect

* wrong link - bad copilot

* handler should be instructions not instruction

* Adds prompt engineering chat mode

Introduces a new chat mode to refine user-provided prompts, leveraging OpenAI prompt engineering techniques.

This mode helps improve prompts by analyzing their structure, complexity, and specificity,
and then suggesting improvements and providing a refined prompt as output.

It is intended to help generate better and more complete prompts based on user input.

* fix: Correct filename casing for Prompt Engineering Chat Mode in README

* feat: Add Prompt Engineer chat mode to README

* Update chatmodes/prompt-engineer.chatmode.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* fix: Add missing front matter to prompt engineer chat mode documentation

* fix: Update description for Prompt Engineer chat mode to include OpenAI's techniques

* Updates prompt engineer chat mode description

Improves the description of the Prompt Engineer chat mode to clarify its purpose: analyzing and improving user-provided prompts based on established prompt engineering principles. The updated description reflects the mode's behavior of treating all user input as prompts and providing detailed analyses along with enhanced versions.

* Adds Prompt Engineer chat mode

Introduces a new chat mode specialized in analyzing and improving prompts.

This mode treats every user input as a prompt, providing a detailed analysis and generating an improved version, enhancing prompt engineering workflows.

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

…velopment Guide (#23)

* docs: added copilot instructions for TanStack Start with Shadcn/ui Development Guide

* Update instructions/tanstack-start-shadcn-tailwind.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* wrapped frontmatter description in single quotes per guidelines

* added applyTo frontmatter property

* updated README

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

…tant (#26)

* feat: chat mode - Plan Mode - Strategic Planning & Architecture Assistant

Strategic planning and architecture assistant focused on thoughtful analysis before implementation. Helps developers understand codebases, clarify requirements, and develop comprehensive implementation strategies.

* update readme

* feat: add memory bank instructions

add memory bank instructions based on cline memory bank with additional task management system

* update readme

* Update 4.1-Beast.chatmode.md

* Update 4.1-Beast.chatmode.md

* Update 4.1-Beast.chatmode.md

* First add of PowerShell instructions

* Update instructions/powershell.instructions.md

* Update instructions/powershell.instructions.md

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>

* Add Quarkus development standards and instructions

* Fix: Add applyTo field in Quarkus instructions metadata

…s and configurations (#52)

* Add Spring Boot Java project prompt with setup instructions and configurations

* Add prompt for creating Spring Boot Kotlin project skeleton

---------

Co-authored-by: Vincent Huang iMac <vincent.huang@opennet.tw>

* Add prompts for .NET best practices, design pattern review, and GitHub Copilot suggestions

- Introduced a comprehensive prompt for ensuring .NET/C# code adheres to best practices, covering documentation, design patterns, dependency injection, resource management, async patterns, testing standards, configuration, AI integration, error handling, performance, security, and code quality.
- Added a prompt for reviewing C#/.NET code for design pattern implementation, providing a checklist for required patterns, architecture, best practices, SOLID principles, performance, maintainability, testability, security, documentation, code clarity, and clean code.
- Created prompts for suggesting relevant GitHub Copilot chatmodes and prompts based on the current repository context, including a structured process for fetching available chatmodes/prompts, scanning local files, and presenting options with rationale.
- Developed a prompt for updating Azure Verified Modules (AVM) in Bicep files, detailing the process for scanning, checking for updates, validating, and handling breaking changes.
- Implemented a prompt for updating implementation plans with new requirements, ensuring machine-readable output and adherence to a strict template.
- Added a prompt for updating the llms.txt file to reflect changes in documentation or specifications, focusing on compliance with the llmstxt specification.
- Created a prompt for updating markdown file indices with files from specified folders, including options for table structures and update strategies.
- Developed a prompt for updating object-oriented component documentation, following industry best practices and ensuring alignment with current implementations.
- Added a prompt for updating specification files, emphasizing clarity, structure, and compliance with established documentation standards.

* CHANGE: Update implementation plan prompt formatting

- Renamed prompt title for clarity.
- Added spacing for improved readability.
- Enhanced structure to ensure compliance with template validation rules.

* CHANGE: Fix typo in .NET best practices prompt

- Corrected "soltion" to "solution" in the prompt description.

…ebase (#57)

* new java and springboot base best practices

* Update java-and-springboot.md

* Update java-and-springboot.md

* split  java and springboot instructions

* header wrap with signle quote

* remove duplicate instruction

* address code reviews

* apply  update-readme script

* java and kotlin prompts for springboot

* apply update-readme  script

* Apply suggestion from @aaronpowell

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>

* Update csharp-mstest.prompt.md

Update to align with our current recommendations on how to use MSTest.

* remove csvDataSource, fix list style

* sync up readme emoji and add jump links

* fix: correct markdown syntax for reusable prompts section in README

* Add Azure Resource Health & Issue Diagnosis prompt

* Remove Azure Resource Health & Issue Diagnosis prompt from README

* Ran node update-readme.js

* instruction file for ruby on rails

* updated readme

* feat: add comprehensive API design & documentation generator prompt (OpenAPI, REST, GraphQL, best practices, examples)

* chore: update README.md after adding API design prompt

* feat: Add comprehensive DevOps & CI/CD best practices instructions

* Add comprehensive DevOps suite and performance instructions

* Remove rejected API Design prompt and update README

* Update security instructions

* Update containerization-docker-best-practices.instructions.md

* Update github-actions-ci-cd-best-practices.instructions.md

* Update kubernetes-deployment-best-practices.instructions.md

* Update devops-core-principles.instructions.md

* Apply suggestion from @aaronpowell

* Apply suggestion from @aaronpowell

* Apply suggestion from @aaronpowell

* Apply suggestion from @aaronpowell

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>

* Add new chat modes for Azure Verified Modules, Critical Thinking, C#/.NET Janitor, Demonstrate Understanding, Expert .NET Engineer, Expert React Engineer, Implementation Plan, Universal Janitor, Mentor, Principal Engineer, Semantic Kernel (Python & .NET), Simple App Idea Generator, Specification Generation, and Technical Debt Remediation. Each mode includes detailed instructions, core tasks, best practices, and tools for effective software engineering guidance and support.

* Update chatmodes/mentor.chatmode.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Added new reacjs instructions

* Update README.md

* rerunning updater

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>

* Create api-architect.md

initial

* Update api-architect.md

* Update README.md

* Rename api-architect.md to api-architect.chatmode.md

* Update README.md

added API Architect to custom chat modes

* Update api-architect.chatmode.md

incremental

* Update api-architect.chatmode.md

formatting

* Update api-architect.chatmode.md

* Running update script

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>

* Add comprehensive guidelines for DDD and .NET best practices

* docs: update docs to include new instructions

* fix: resolve typo in description of DDD and .NET architecture guidelines

* docs: run update-readme.js

* Fix the applyTo property in the instructions files

Signed-off-by: André Silva <2493377+askpt@users.noreply.github.com>

* Update applyTo property to target specific GitHub Actions workflow files

Signed-off-by: André Silva <2493377+askpt@users.noreply.github.com>

* Update security-and-owasp.instructions.md

* Fixing readme

---------

Signed-off-by: André Silva <2493377+askpt@users.noreply.github.com>
Co-authored-by: Aaron Powell <me@aaron-powell.com>

* Add prompt for creating a comprehensive README.md file

* Update readme

* Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Add review and refactor prompt for code maintenance guidelines

* Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

…ting instructions (#84)

* feat: add meta agentic project scaffold chat mode

Use awesome-copilot repo to fetch the best tools for a project

* Update meta-agentic-project-scaffold.chatmode.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update meta-agentic-project-scaffold.chatmode.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* CR fixes

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* feat: Add comprehensive AI Prompt Engineering & Safety Best Practices

- Add 868-line instruction file covering prompt engineering fundamentals, safety, bias mitigation, security, and responsible AI usage
- Add 527-line expert chat mode for prompt analysis and improvement with systematic evaluation frameworks
- Include detailed templates, checklists, examples, and educational resources
- Follow industry best practices from Microsoft, OpenAI, and Google AI principles
- Implement comprehensive safety assessment frameworks and bias detection tools
- Add advanced techniques: prompt chaining, templates, versioning, and testing frameworks
- Provide extensive references to official guidelines, research papers, and community resources
- Strictly comply with project guidelines (CONTRIBUTING.md, SECURITY.md, SUPPORT.md)

Total: 1,395 lines of professional-grade prompt engineering guidance

* feat: add comprehensive AI prompt engineering safety best practices instruction

- Add 868-line comprehensive instruction file covering prompt engineering fundamentals
- Include safety frameworks, bias mitigation, security best practices, and responsible AI usage
- Provide detailed templates, checklists, and testing methodologies
- Cover anti-patterns, prompt injection prevention, and ethical considerations
- Add educational content on prompt patterns, validation techniques, and documentation
- Include practical examples and real-world scenarios for developers
- Rename file to avoid conflict with existing prompt-engineer chat mode
- Update README with new instruction file

This instruction provides developers with industry-standard best practices for creating safe, effective, and responsible AI prompts for Copilot and other LLMs.

* fix: restore original prompt-engineer chat mode to match upstream

- Restore the original prompt-engineer.chatmode.md from upstream/main
- Remove overwritten comprehensive version to avoid duplication and conflict
- Ensure only the official, simple prompt engineer chat mode is present

All advanced prompt engineering best practices are now in the new instruction file only.

* chore: regenerate README after restoring original prompt engineer chat mode

- Re-run update-readme.js to ensure only the correct, original description for prompt-engineer.chatmode.md is present
- Remove any duplicate or outdated descriptions from previous comprehensive version
- README is now fully in sync with the restored chat mode and current repo state

* feat: add comprehensive AI prompt engineering safety review prompt

- Add 150+ line prompt file for AI prompt engineering safety review and improvement
- Include systematic analysis framework covering safety, bias, security, and effectiveness
- Provide structured output format with detailed assessment criteria
- Include safety guidelines, testing recommendations, and educational insights
- Complement the existing AI prompt engineering safety best practices instruction
- Follow repository guidelines and best practices for prompt creation

This prompt enables developers to systematically review and improve prompts for safety, bias mitigation, security, and responsible AI usage.

* feat: expand AI prompt engineering safety review prompt with comprehensive analysis

- Expand prompt from basic to comprehensive 200+ line analysis framework
- Add advanced pattern analysis covering zero-shot, few-shot, chain-of-thought, role-based patterns
- Include technical robustness assessment (input validation, error handling, scalability)
- Add performance optimization metrics (token efficiency, response quality, consistency)
- Enhance output format with detailed scoring and assessment criteria
- Include bias mitigation strategies, security enhancements, and technical improvements
- Provide extensive testing recommendations and educational insights
- Follow repository guidelines for comprehensive, actionable prompt content

This expanded prompt provides developers with a thorough, systematic approach to prompt safety review and improvement.

* feat: add C# TUnit testing prompt template

- Added csharp-tunit.prompt.md with structured prompt template
- Provides testing guidelines and best practices for C# development using TUnit framework
- Includes comprehensive testing patterns for .NET projects

* docs: add TUnit entry to README.md

- Added TUnit Best Practices entry after NUnit and before XUnit
- References prompts/csharp-tunit.prompt.md with proper description
- Includes VS Code and VS Code Insiders installation badges

* move: relocate TUnit prompt to prompts directory

- Move csharp-tunit.prompt.md from root to prompts/ directory
- Follow established project organization pattern
- All prompt files should be in the prompts directory

* Create Rust-GPT-4.1-Beast-Mode.md 

# SYSTEM PROMPT — GPT-4.1 Rust Coding Beast Mode V3 (VS Code Tools Edition)

* Update chatmodes/Rust-GPT-4.1-Beast-Mode.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update chatmodes/Rust-GPT-4.1-Beast-Mode.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update chatmodes/Rust-GPT-4.1-Beast-Mode.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update chatmodes/Rust-GPT-4.1-Beast-Mode.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update chatmodes/Rust-GPT-4.1-Beast-Mode.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update README.md

* Delete chatmodes/Rust-GPT-4.1-Beast-Mode.md

* Create Rust-GPT-4.1-Beast-Mode.md

* Update README.md

* Update README.md

* Update Rust-GPT-4.1-Beast-Mode.md

Adding 10 Anti-Patterns under the Workflow

* Fixing readme

* Fixing readme

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Aaron Powell <me@aaron-powell.com>

…90)

* Update csharp-docs.prompt.md

Use `<see langword>` for languange specific keywords like `null`, `true`, `false`, `int`, `bool`, etc.

* Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Add VueJs 3 instructions

* Fixing readme

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>

…ance (#95)

* Create quarkus-mcp-server-sse.instructions.md

* Fixed readme and metadata for instruction

* ms-sql-dba.chatmode

* update-readme.js changes

* more refining

* add instructions file

* adress missed changes  and apply suggestions

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>

… Reviewer (#98)

* feat: Add Gilfoyle-style code review mode and instructions for sardonic analysis

* updated readme for Gilfoyle

Fixed handling of quotes in update-readme.js code

…nstructions (#107)

* feat: ⚡ Added software-engineer-agent-v1.chatmode

Expert-level software engineering agent. Deliver production-ready, maintainable code.

* feat: ⚡ added spec-driven-workflow-v1.instructions

Bridge the gap between requirements and implementation.

* docs: 🐛 update readme

* fix: 🐛 add missing description for instruction

* fix: 🐛 update readme

* fix: 🎨 add markdown lint compliance