Add Copilot agent configurations, path-specific instructions, and MCP server setup

[Copilot]

Configures GitHub Copilot with path-scoped instructions, custom agents, and MCP servers for improved AI-assisted development.

Path-Specific Instructions (.github/instructions/)

• backend.instructions.md — C#/HotChocolate/EF Core patterns, error handling, validation
• frontend.instructions.md — Angular 20 signals, Apollo, Material conventions
• graphql.instructions.md — Schema composition, codegen workflow, error codes
• review.instructions.md — Code review focus areas for backend/frontend/security

Custom Agents (.github/agents/)

• backend.agent.md — .NET expert with HotChocolate, EF Core, ASP.NET tooling
• frontend.agent.md — Angular 20 expert with Apollo, Material, signals
• docs.agent.md — Documentation specialist scoped to non-code files

MCP Configuration (.vscode/mcp.json)

{
  "servers": {
    "context7": { "command": "npx", "args": ["-y", "@upstash/context7-mcp@^1.0.31"] },
    "github": { "command": "docker", "args": ["run", "-i", "--rm", "-e", "GITHUB_PERSONAL_ACCESS_TOKEN", "ghcr.io/github/github-mcp-server"] },
    "filesystem": { "command": "npx", "args": ["-y", "@modelcontextprotocol/server-filesystem@^2025.11.25", "${workspaceFolder}"] }
  }
}

VS Code Settings

Enables chat.mcp.enabled, github.copilot.chat.agent.thinkingProcess, and github.copilot.chat.codeGeneration.useInstructionFiles.

Original prompt

Can you properly create and configure the copilot, agent and review instruction for AI? Also, the MCPs

Add things like Context7 and relevant things

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[Copilot]

Pull request overview

This PR adds comprehensive GitHub Copilot configuration for the BankTracker monorepo, including path-specific instructions for backend/frontend/GraphQL development, custom AI agents for specialized tasks, and MCP (Model Context Protocol) server integration for enhanced development workflows.

Key Changes

• Configures path-scoped instruction files (.github/instructions/) for backend C#/HotChocolate, frontend Angular/Apollo, GraphQL schema, and code review guidelines
• Adds three specialized Copilot agents (.github/agents/) for backend, frontend, and documentation tasks with defined tools and responsibilities
• Sets up MCP servers for Context7 library documentation, GitHub integration, and filesystem access with VS Code integration

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
.vscode/settings.json	Enables MCP support, Copilot thinking process, and instruction file usage
.vscode/mcp.json	Configures Context7, GitHub, and filesystem MCP servers with Docker/npx runners
.github/instructions/backend.instructions.md	Path-specific C# backend patterns for HotChocolate, EF Core, and validation
.github/instructions/frontend.instructions.md	Angular 20 signals, Apollo, Material conventions for TypeScript/HTML/SCSS
.github/instructions/graphql.instructions.md	GraphQL operation workflow, codegen, error codes, and scalar mappings
.github/instructions/review.instructions.md	Code review checklist for backend, frontend, GraphQL, and security concerns
.github/agents/backend.agent.md	Backend-focused agent with .NET/EF Core expertise and build/migration commands
.github/agents/frontend.agent.md	Frontend-focused agent with Angular/Apollo expertise and npm workflow commands
.github/agents/docs.agent.md	Documentation-only agent with read/edit/search tools, no code modification