docs(python-mcp): update skill, instructions, agent, and plugin for MCP Python SDK v2 🤖🤖🤖 (#4737)

* docs(python-mcp-server-generator): rewrite skill for MCP Python SDK v2

- Target MCP Python SDK v2 (MCPServer) and MCP specification 2026-07-28
- Replace FastMCP imports with `from mcp.server import MCPServer`
- Rewrite the description with explicit triggers and exclusions
- Add the compatibility field (uv, Python 3.10+, npx for the Inspector)
- Add a five-step workflow checklist: create, write, test, validate, configure
- Pin the SDK with `uv add "mcp[cli]>=2,<3"` and use a flat uv app layout
- Add server and in-memory Client test templates
- Add a test-fix-retest validation loop with `uv run pytest`
- Add a Gotchas section for SDK v1 to v2 changes and deprecated features
- Move Streamable HTTP guidance to references/streamable-http.md
- Remove generic guidance that the model already knows

* docs(python-mcp-server): update instructions for MCP Python SDK v2

- Target MCP Python SDK v2 (MCPServer) and MCP specification 2026-07-28
- Replace FastMCP imports with MCPServer and mcp.server.mcpserver imports
- Move transport options from the constructor to run() and streamable_http_app()
- Use Resolve and Elicit for user input instead of ctx.elicit()
- Use ctx.notify_tools_changed() for list change notifications
- Explain ToolError and MCPError behavior for tool failures
- Mark sampling, protocol logging, and roots as deprecated
- Add transport security, CORS, and multi-worker guidance
- Add an in-memory Client test pattern
- Rewrite the text in ASD-STE100 Simplified Technical English
- Use single-quoted frontmatter values

* docs(python-mcp-expert): update agent for MCP Python SDK v2

- Target MCP Python SDK v2 (MCPServer) and MCP specification 2026-07-28
- Replace the retired GPT-4.1 model with GPT-6 Sol
- Replace FastMCP guidance with MCPServer guidance
- Add guidance for transport options, Resolve and Elicit, and notify_tools_changed()
- Explain ToolError and MCPError behavior for tool failures
- Mark sampling, protocol logging, and roots as deprecated
- Add SDK v1 to v2 migration as a supported scenario
- Rewrite the text in ASD-STE100 Simplified Technical English
- Use single-quoted frontmatter values

* chore(python-mcp-development): update plugin metadata for MCP Python SDK v2

- Remove FastMCP from the plugin description and README
- Describe the actual plugin contents: one skill and one agent
- Replace the fastmcp keyword with mcp-python-sdk
- Bump the plugin version to 2.0.0
- Regenerate marketplace.json and docs/README.plugins.md

* fix(python-mcp-server-generator): correct transport security, lifespan, and SSE notes

* fix(python-mcp-server): remove invalid structured_output advice and align with skill

* fix(python-mcp-expert): add missing SDK v2 rules and remove repeated guidance

* fix(python-mcp-expert): remove the retired model from frontmatter

* fix(python-mcp-server-generator): state Node.js as the MCP Inspector prerequisite

plugins/python-mcp-development/README.md

@@ -1,6 +1,6 @@
 # Python MCP Server Development Plugin
 
-Complete toolkit for building Model Context Protocol (MCP) servers in Python using the official SDK with FastMCP. Includes instructions for best practices, a prompt for generating servers, and an expert chat mode for guidance.
+Build Model Context Protocol (MCP) servers in Python with the official MCP Python SDK v2 (MCPServer). Includes a skill that generates a server project and an expert agent for guidance.
 
 ## Installation
 
@@ -15,7 +15,7 @@ copilot plugin install python-mcp-development@awesome-copilot
 
 | Command | Description |
 |---------|-------------|
-| `/python-mcp-development:python-mcp-server-generator` | Generate a complete MCP server project in Python with tools, resources, and proper configuration |
+| `/python-mcp-development:python-mcp-server-generator` | Generate a Python MCP server project with the MCP Python SDK v2 (MCPServer), typed tools, in-memory tests, and client configuration |
 
 ### Agents